f51667685749e (Theodore Ts'o 2017-12-17 22:00:59 -0500 1) // SPDX-License-Identifier: GPL-2.0+
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 2) /*
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 3) * linux/fs/jbd2/commit.c
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 4) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 5) * Written by Stephen C. Tweedie <sct@redhat.com>, 1998
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 6) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 7) * Copyright 1998 Red Hat corp --- All Rights Reserved
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 8) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 9) * Journal commit routines for the generic filesystem journaling code;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 10) * part of the ext2fs journaling system.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 11) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 12)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 13) #include <linux/time.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 14) #include <linux/fs.h>
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 15) #include <linux/jbd2.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 16) #include <linux/errno.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 17) #include <linux/slab.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 18) #include <linux/mm.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 19) #include <linux/pagemap.h>
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 20) #include <linux/jiffies.h>
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 21) #include <linux/crc32.h>
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 22) #include <linux/writeback.h>
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 23) #include <linux/backing-dev.h>
fd98496f467b3 (Theodore Ts'o 2009-01-05 21:34:13 -0500 24) #include <linux/bio.h>
0e3d2a6313d03 (Theodore Ts'o 2009-09-11 09:30:12 -0400 25) #include <linux/blkdev.h>
39e3ac2599a5f (Brian King 2010-10-27 21:25:12 -0400 26) #include <linux/bitops.h>
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 27) #include <trace/events/jbd2.h>
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 28)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 29) /*
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 30) * IO end handler for temporary buffer_heads handling writes to the journal.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 31) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 32) static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 33) {
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 34) struct buffer_head *orig_bh = bh->b_private;
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 35)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 36) BUFFER_TRACE(bh, "");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 37) if (uptodate)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 38) set_buffer_uptodate(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 39) else
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 40) clear_buffer_uptodate(bh);
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 41) if (orig_bh) {
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 42) clear_bit_unlock(BH_Shadow, &orig_bh->b_state);
4e857c58efeb9 (Peter Zijlstra 2014-03-17 18:06:10 +0100 43) smp_mb__after_atomic();
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 44) wake_up_bit(&orig_bh->b_state, BH_Shadow);
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 45) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 46) unlock_buffer(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 47) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 48)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 49) /*
87c89c232c8f7 (Jan Kara 2008-07-11 19:27:31 -0400 50) * When an ext4 file is truncated, it is possible that some pages are not
87c89c232c8f7 (Jan Kara 2008-07-11 19:27:31 -0400 51) * successfully freed, because they are attached to a committing transaction.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 52) * After the transaction commits, these pages are left on the LRU, with no
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 53) * ->mapping, and with attached buffers. These pages are trivially reclaimable
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 54) * by the VM, but their apparent absence upsets the VM accounting, and it makes
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 55) * the numbers in /proc/meminfo look odd.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 56) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 57) * So here, we have a buffer which has just come off the forget list. Look to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 58) * see if we can strip all buffers from the backing page.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 59) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 60) * Called under lock_journal(), and possibly under journal_datalist_lock. The
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 61) * caller provided us with a ref against the buffer, and we drop that here.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 62) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 63) static void release_buffer_page(struct buffer_head *bh)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 64) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 65) struct page *page;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 66)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 67) if (buffer_dirty(bh))
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 68) goto nope;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 69) if (atomic_read(&bh->b_count) != 1)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 70) goto nope;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 71) page = bh->b_page;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 72) if (!page)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 73) goto nope;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 74) if (page->mapping)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 75) goto nope;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 76)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 77) /* OK, it's a truncated page */
529ae9aaa0837 (Nicholas Piggin 2008-08-02 12:01:03 +0200 78) if (!trylock_page(page))
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 79) goto nope;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 80)
09cbfeaf1a5a6 (Kirill A. Shutemov 2016-04-01 15:29:47 +0300 81) get_page(page);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 82) __brelse(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 83) try_to_free_buffers(page);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 84) unlock_page(page);
09cbfeaf1a5a6 (Kirill A. Shutemov 2016-04-01 15:29:47 +0300 85) put_page(page);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 86) return;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 87)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 88) nope:
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 89) __brelse(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 90) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 91)
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 92) static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh)
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 93) {
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 94) struct commit_header *h;
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 95) __u32 csum;
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 96)
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 97) if (!jbd2_journal_has_csum_v2or3(j))
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 98) return;
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 99)
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 100) h = (struct commit_header *)(bh->b_data);
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 101) h->h_chksum_type = 0;
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 102) h->h_chksum_size = 0;
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 103) h->h_chksum[0] = 0;
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 104) csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 105) h->h_chksum[0] = cpu_to_be32(csum);
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 106) }
1f56c5890e3e8 (Darrick J. Wong 2012-05-27 08:10:25 -0400 107)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 108) /*
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 109) * Done it all: now submit the commit record. We should have
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 110) * cleaned up our previous buffers by now, so if we are in abort
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 111) * mode we can now just skip the rest of the journal write
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 112) * entirely.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 113) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 114) * Returns 1 if the journal needs to be aborted or 0 on success
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 115) */
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 116) static int journal_submit_commit_record(journal_t *journal,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 117) transaction_t *commit_transaction,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 118) struct buffer_head **cbh,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 119) __u32 crc32_sum)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 120) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 121) struct commit_header *tmp;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 122) struct buffer_head *bh;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 123) int ret;
b42d1d6b5b789 (Arnd Bergmann 2018-07-29 15:51:47 -0400 124) struct timespec64 now;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 125)
6cba611e600de (Zhang Huan 2011-04-05 19:16:20 -0400 126) *cbh = NULL;
6cba611e600de (Zhang Huan 2011-04-05 19:16:20 -0400 127)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 128) if (is_journal_aborted(journal))
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 129) return 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 130)
32ab671599a89 (Jan Kara 2016-02-22 23:17:15 -0500 131) bh = jbd2_journal_get_descriptor_buffer(commit_transaction,
32ab671599a89 (Jan Kara 2016-02-22 23:17:15 -0500 132) JBD2_COMMIT_BLOCK);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 133) if (!bh)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 134) return 1;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 135)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 136) tmp = (struct commit_header *)bh->b_data;
b42d1d6b5b789 (Arnd Bergmann 2018-07-29 15:51:47 -0400 137) ktime_get_coarse_real_ts64(&now);
736603ab29750 (Theodore Ts'o 2008-07-11 19:27:31 -0400 138) tmp->h_commit_sec = cpu_to_be64(now.tv_sec);
736603ab29750 (Theodore Ts'o 2008-07-11 19:27:31 -0400 139) tmp->h_commit_nsec = cpu_to_be32(now.tv_nsec);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 140)
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 141) if (jbd2_has_feature_checksum(journal)) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 142) tmp->h_chksum_type = JBD2_CRC32_CHKSUM;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 143) tmp->h_chksum_size = JBD2_CRC32_CHKSUM_SIZE;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 144) tmp->h_chksum[0] = cpu_to_be32(crc32_sum);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 145) }
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 146) jbd2_commit_block_csum_set(journal, bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 147)
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 148) BUFFER_TRACE(bh, "submit commit block");
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 149) lock_buffer(bh);
45a90bfd90c12 (Theodore Ts'o 2008-10-06 12:04:02 -0400 150) clear_buffer_dirty(bh);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 151) set_buffer_uptodate(bh);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 152) bh->b_end_io = journal_end_buffer_io_sync;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 153)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 154) if (journal->j_flags & JBD2_BARRIER &&
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 155) !jbd2_has_feature_async_commit(journal))
70fd76140a6cb (Christoph Hellwig 2016-11-01 07:40:10 -0600 156) ret = submit_bh(REQ_OP_WRITE,
70fd76140a6cb (Christoph Hellwig 2016-11-01 07:40:10 -0600 157) REQ_SYNC | REQ_PREFLUSH | REQ_FUA, bh);
9c35575bbe6b1 (Christoph Hellwig 2010-08-18 05:29:17 -0400 158) else
70fd76140a6cb (Christoph Hellwig 2016-11-01 07:40:10 -0600 159) ret = submit_bh(REQ_OP_WRITE, REQ_SYNC, bh);
9c35575bbe6b1 (Christoph Hellwig 2010-08-18 05:29:17 -0400 160)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 161) *cbh = bh;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 162) return ret;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 163) }
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 164)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 165) /*
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 166) * This function along with journal_submit_commit_record
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 167) * allows to write the commit record asynchronously.
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 168) */
fd98496f467b3 (Theodore Ts'o 2009-01-05 21:34:13 -0500 169) static int journal_wait_on_commit_record(journal_t *journal,
fd98496f467b3 (Theodore Ts'o 2009-01-05 21:34:13 -0500 170) struct buffer_head *bh)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 171) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 172) int ret = 0;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 173)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 174) clear_buffer_dirty(bh);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 175) wait_on_buffer(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 176)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 177) if (unlikely(!buffer_uptodate(bh)))
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 178) ret = -EIO;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 179) put_bh(bh); /* One for getblk() */
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 180)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 181) return ret;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 182) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 183)
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 184) /*
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 185) * write the filemap data using writepage() address_space_operations.
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 186) * We don't do block allocation here even for delalloc. We don't
a49773064bc22 (Liu Song 2019-05-30 15:15:57 -0400 187) * use writepages() because with delayed allocation we may be doing
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 188) * block allocation in writepages().
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 189) */
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 190) int jbd2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 191) {
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 192) struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 193) struct writeback_control wbc = {
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 194) .sync_mode = WB_SYNC_ALL,
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 195) .nr_to_write = mapping->nrpages * 2,
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 196) .range_start = jinode->i_dirty_start,
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 197) .range_end = jinode->i_dirty_end,
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 198) };
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 199)
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 200) /*
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 201) * submit the inode data buffers. We use writepage
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 202) * instead of writepages. Because writepages can do
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 203) * block allocation with delalloc. We need to write
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 204) * only allocated blocks here.
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 205) */
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 206) return generic_writepages(mapping, &wbc);
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 207) }
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 208)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 209) /* Send all the data buffers related to an inode */
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 210) int jbd2_submit_inode_data(struct jbd2_inode *jinode)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 211) {
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 212)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 213) if (!jinode || !(jinode->i_flags & JI_WRITE_DATA))
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 214) return 0;
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 215)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 216) trace_jbd2_submit_inode_data(jinode->i_vfs_inode);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 217) return jbd2_journal_submit_inode_data_buffers(jinode);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 218)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 219) }
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 220) EXPORT_SYMBOL(jbd2_submit_inode_data);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 221)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 222) int jbd2_wait_inode_data(journal_t *journal, struct jbd2_inode *jinode)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 223) {
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 224) if (!jinode || !(jinode->i_flags & JI_WAIT_DATA) ||
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 225) !jinode->i_vfs_inode || !jinode->i_vfs_inode->i_mapping)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 226) return 0;
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 227) return filemap_fdatawait_range_keep_errors(
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 228) jinode->i_vfs_inode->i_mapping, jinode->i_dirty_start,
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 229) jinode->i_dirty_end);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 230) }
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 231) EXPORT_SYMBOL(jbd2_wait_inode_data);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 232)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 233) /*
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 234) * Submit all the data buffers of inode associated with the transaction to
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 235) * disk.
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 236) *
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 237) * We are in a committing transaction. Therefore no new inode can be added to
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 238) * our inode list. We use JI_COMMIT_RUNNING flag to protect inode we currently
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 239) * operate on from being released while we write out pages.
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 240) */
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 241) static int journal_submit_data_buffers(journal_t *journal,
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 242) transaction_t *commit_transaction)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 243) {
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 244) struct jbd2_inode *jinode;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 245) int err, ret = 0;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 246)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 247) spin_lock(&journal->j_list_lock);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 248) list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
41617e1a8dec9 (Jan Kara 2016-04-24 00:56:07 -0400 249) if (!(jinode->i_flags & JI_WRITE_DATA))
41617e1a8dec9 (Jan Kara 2016-04-24 00:56:07 -0400 250) continue;
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 251) jinode->i_flags |= JI_COMMIT_RUNNING;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 252) spin_unlock(&journal->j_list_lock);
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 253) /* submit the inode data buffers. */
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 254) trace_jbd2_submit_inode_data(jinode->i_vfs_inode);
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 255) if (journal->j_submit_inode_data_buffers) {
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 256) err = journal->j_submit_inode_data_buffers(jinode);
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 257) if (!ret)
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 258) ret = err;
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 259) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 260) spin_lock(&journal->j_list_lock);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 261) J_ASSERT(jinode->i_transaction == commit_transaction);
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 262) jinode->i_flags &= ~JI_COMMIT_RUNNING;
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 263) smp_mb();
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 264) wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 265) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 266) spin_unlock(&journal->j_list_lock);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 267) return ret;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 268) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 269)
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 270) int jbd2_journal_finish_inode_data_buffers(struct jbd2_inode *jinode)
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 271) {
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 272) struct address_space *mapping = jinode->i_vfs_inode->i_mapping;
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 273)
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 274) return filemap_fdatawait_range_keep_errors(mapping,
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 275) jinode->i_dirty_start,
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 276) jinode->i_dirty_end);
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 277) }
aa3c0c61f62d6 (Mauricio Faria de Oliveira 2020-10-05 21:48:38 -0300 278)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 279) /*
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 280) * Wait for data submitted for writeout, refile inodes to proper
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 281) * transaction if needed.
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 282) *
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 283) */
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 284) static int journal_finish_inode_data_buffers(journal_t *journal,
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 285) transaction_t *commit_transaction)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 286) {
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 287) struct jbd2_inode *jinode, *next_i;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 288) int err, ret = 0;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 289)
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 290) /* For locking, see the comment in journal_submit_data_buffers() */
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 291) spin_lock(&journal->j_list_lock);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 292) list_for_each_entry(jinode, &commit_transaction->t_inode_list, i_list) {
41617e1a8dec9 (Jan Kara 2016-04-24 00:56:07 -0400 293) if (!(jinode->i_flags & JI_WAIT_DATA))
41617e1a8dec9 (Jan Kara 2016-04-24 00:56:07 -0400 294) continue;
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 295) jinode->i_flags |= JI_COMMIT_RUNNING;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 296) spin_unlock(&journal->j_list_lock);
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 297) /* wait for the inode data buffers writeout. */
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 298) if (journal->j_finish_inode_data_buffers) {
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 299) err = journal->j_finish_inode_data_buffers(jinode);
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 300) if (!ret)
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 301) ret = err;
342af94ec6c02 (Mauricio Faria de Oliveira 2020-10-05 21:48:39 -0300 302) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 303) spin_lock(&journal->j_list_lock);
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 304) jinode->i_flags &= ~JI_COMMIT_RUNNING;
cb0d9d47a39de (Jan Kara 2016-02-22 23:20:30 -0500 305) smp_mb();
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 306) wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 307) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 308)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 309) /* Now refile inode to proper lists */
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 310) list_for_each_entry_safe(jinode, next_i,
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 311) &commit_transaction->t_inode_list, i_list) {
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 312) list_del(&jinode->i_list);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 313) if (jinode->i_next_transaction) {
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 314) jinode->i_transaction = jinode->i_next_transaction;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 315) jinode->i_next_transaction = NULL;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 316) list_add(&jinode->i_list,
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 317) &jinode->i_transaction->t_inode_list);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 318) } else {
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 319) jinode->i_transaction = NULL;
6ba0e7dc64a5a (Ross Zwisler 2019-06-20 17:24:56 -0400 320) jinode->i_dirty_start = 0;
6ba0e7dc64a5a (Ross Zwisler 2019-06-20 17:24:56 -0400 321) jinode->i_dirty_end = 0;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 322) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 323) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 324) spin_unlock(&journal->j_list_lock);
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 325)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 326) return ret;
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 327) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 328)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 329) static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 330) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 331) struct page *page = bh->b_page;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 332) char *addr;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 333) __u32 checksum;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 334)
303a8f2afc7ba (Cong Wang 2011-11-25 23:14:31 +0800 335) addr = kmap_atomic(page);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 336) checksum = crc32_be(crc32_sum,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 337) (void *)(addr + offset_in_page(bh->b_data)), bh->b_size);
303a8f2afc7ba (Cong Wang 2011-11-25 23:14:31 +0800 338) kunmap_atomic(addr);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 339)
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 340) return checksum;
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 341) }
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 342)
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 343) static void write_tag_block(journal_t *j, journal_block_tag_t *tag,
18eba7aae080d (Mingming Cao 2006-10-11 01:21:13 -0700 344) unsigned long long block)
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 345) {
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 346) tag->t_blocknr = cpu_to_be32(block & (u32)~0);
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 347) if (jbd2_has_feature_64bit(j))
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 348) tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1);
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 349) }
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 350)
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 351) static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag,
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 352) struct buffer_head *bh, __u32 sequence)
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 353) {
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 354) journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag;
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 355) struct page *page = bh->b_page;
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 356) __u8 *addr;
eee06c5678449 (Darrick J. Wong 2013-05-28 07:31:59 -0400 357) __u32 csum32;
18a6ea1e5cc88 (Darrick J. Wong 2013-08-28 14:59:58 -0400 358) __be32 seq;
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 359)
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 360) if (!jbd2_journal_has_csum_v2or3(j))
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 361) return;
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 362)
18a6ea1e5cc88 (Darrick J. Wong 2013-08-28 14:59:58 -0400 363) seq = cpu_to_be32(sequence);
906adea1536fe (Cong Wang 2012-06-23 11:24:48 +0800 364) addr = kmap_atomic(page);
18a6ea1e5cc88 (Darrick J. Wong 2013-08-28 14:59:58 -0400 365) csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq));
eee06c5678449 (Darrick J. Wong 2013-05-28 07:31:59 -0400 366) csum32 = jbd2_chksum(j, csum32, addr + offset_in_page(bh->b_data),
eee06c5678449 (Darrick J. Wong 2013-05-28 07:31:59 -0400 367) bh->b_size);
906adea1536fe (Cong Wang 2012-06-23 11:24:48 +0800 368) kunmap_atomic(addr);
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 369)
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 370) if (jbd2_has_feature_csum3(j))
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 371) tag3->t_checksum = cpu_to_be32(csum32);
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 372) else
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 373) tag->t_checksum = cpu_to_be16(csum32);
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 374) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 375) /*
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 376) * jbd2_journal_commit_transaction
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 377) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 378) * The primary function for committing a transaction to the log. This
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 379) * function is called by the journal thread to begin a complete commit.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 380) */
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 381) void jbd2_journal_commit_transaction(journal_t *journal)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 382) {
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 383) struct transaction_stats_s stats;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 384) transaction_t *commit_transaction;
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 385) struct journal_head *jh;
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 386) struct buffer_head *descriptor;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 387) struct buffer_head **wbuf = journal->j_wbuf;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 388) int bufs;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 389) int flags;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 390) int err;
18eba7aae080d (Mingming Cao 2006-10-11 01:21:13 -0700 391) unsigned long long blocknr;
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 392) ktime_t start_time;
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 393) u64 commit_time;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 394) char *tagp = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 395) journal_block_tag_t *tag = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 396) int space_left = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 397) int first_tag = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 398) int tag_flag;
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 399) int i;
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 400) int tag_bytes = journal_tag_bytes(journal);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 401) struct buffer_head *cbh = NULL; /* For transactional checksums */
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 402) __u32 crc32_sum = ~0;
82f04ab47e1d9 (Jens Axboe 2011-03-17 11:01:52 +0100 403) struct blk_plug plug;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 404) /* Tail of the journal */
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 405) unsigned long first_block;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 406) tid_t first_tid;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 407) int update_tail;
3caa487f53f65 (Darrick J. Wong 2012-05-27 08:10:22 -0400 408) int csum_size = 0;
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 409) LIST_HEAD(io_bufs);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 410) LIST_HEAD(log_bufs);
3caa487f53f65 (Darrick J. Wong 2012-05-27 08:10:22 -0400 411)
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 412) if (jbd2_journal_has_csum_v2or3(journal))
3caa487f53f65 (Darrick J. Wong 2012-05-27 08:10:22 -0400 413) csum_size = sizeof(struct jbd2_journal_block_tail);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 414)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 415) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 416) * First job: lock down the current transaction and wait for
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 417) * all outstanding updates to complete.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 418) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 419)
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 420) /* Do we need to erase the effects of a prior jbd2_journal_flush? */
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 421) if (journal->j_flags & JBD2_FLUSHED) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 422) jbd_debug(3, "super block updated\n");
6fa7aa50b2c48 (Tejun Heo 2016-10-28 12:58:12 -0400 423) mutex_lock_io(&journal->j_checkpoint_mutex);
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 424) /*
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 425) * We hold j_checkpoint_mutex so tail cannot change under us.
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 426) * We don't need any special data guarantees for writing sb
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 427) * since journal is empty and it is ok for write to be
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 428) * flushed only with transaction commit.
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 429) */
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 430) jbd2_journal_update_sb_log_tail(journal,
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 431) journal->j_tail_sequence,
79feb521a4470 (Jan Kara 2012-03-13 22:22:54 -0400 432) journal->j_tail,
70fd76140a6cb (Christoph Hellwig 2016-11-01 07:40:10 -0600 433) REQ_SYNC);
a78bb11d7acd5 (Jan Kara 2012-03-13 15:43:04 -0400 434) mutex_unlock(&journal->j_checkpoint_mutex);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 435) } else {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 436) jbd_debug(3, "superblock not updated\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 437) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 438)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 439) J_ASSERT(journal->j_running_transaction != NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 440) J_ASSERT(journal->j_committing_transaction == NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 441)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 442) write_lock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 443) journal->j_flags |= JBD2_FULL_COMMIT_ONGOING;
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 444) while (journal->j_flags & JBD2_FAST_COMMIT_ONGOING) {
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 445) DEFINE_WAIT(wait);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 446)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 447) prepare_to_wait(&journal->j_fc_wait, &wait,
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 448) TASK_UNINTERRUPTIBLE);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 449) write_unlock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 450) schedule();
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 451) write_lock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 452) finish_wait(&journal->j_fc_wait, &wait);
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 453) /*
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 454) * TODO: by blocking fast commits here, we are increasing
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 455) * fsync() latency slightly. Strictly speaking, we don't need
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 456) * to block fast commits until the transaction enters T_FLUSH
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 457) * state. So an optimization is possible where we block new fast
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 458) * commits here and wait for existing ones to complete
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 459) * just before we enter T_FLUSH. That way, the existing fast
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 460) * commits and this full commit can proceed parallely.
cc80586a57f70 (Harshad Shirwadkar 2020-11-05 19:58:59 -0800 461) */
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 462) }
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 463) write_unlock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 464)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 465) commit_transaction = journal->j_running_transaction;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 466)
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 467) trace_jbd2_start_commit(journal, commit_transaction);
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 468) jbd_debug(1, "JBD2: starting commit of transaction %d\n",
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 469) commit_transaction->t_tid);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 470)
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 471) write_lock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 472) journal->j_fc_off = 0;
3ca841c106fd6 (Paul Gortmaker 2013-06-12 22:46:35 -0400 473) J_ASSERT(commit_transaction->t_state == T_RUNNING);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 474) commit_transaction->t_state = T_LOCKED;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 475)
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 476) trace_jbd2_commit_locking(journal, commit_transaction);
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 477) stats.run.rs_wait = commit_transaction->t_max_wait;
9fff24aa2c5c5 (Theodore Ts'o 2013-02-06 22:30:23 -0500 478) stats.run.rs_request_delay = 0;
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 479) stats.run.rs_locked = jiffies;
9fff24aa2c5c5 (Theodore Ts'o 2013-02-06 22:30:23 -0500 480) if (commit_transaction->t_requested)
9fff24aa2c5c5 (Theodore Ts'o 2013-02-06 22:30:23 -0500 481) stats.run.rs_request_delay =
9fff24aa2c5c5 (Theodore Ts'o 2013-02-06 22:30:23 -0500 482) jbd2_time_diff(commit_transaction->t_requested,
9fff24aa2c5c5 (Theodore Ts'o 2013-02-06 22:30:23 -0500 483) stats.run.rs_locked);
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 484) stats.run.rs_running = jbd2_time_diff(commit_transaction->t_start,
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 485) stats.run.rs_locked);
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 486)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 487) spin_lock(&commit_transaction->t_handle_lock);
a51dca9cd3bb4 (Theodore Ts'o 2010-08-02 08:43:25 -0400 488) while (atomic_read(&commit_transaction->t_updates)) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 489) DEFINE_WAIT(wait);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 490)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 491) prepare_to_wait(&journal->j_wait_updates, &wait,
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 492) TASK_UNINTERRUPTIBLE);
a51dca9cd3bb4 (Theodore Ts'o 2010-08-02 08:43:25 -0400 493) if (atomic_read(&commit_transaction->t_updates)) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 494) spin_unlock(&commit_transaction->t_handle_lock);
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 495) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 496) schedule();
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 497) write_lock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 498) spin_lock(&commit_transaction->t_handle_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 499) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 500) finish_wait(&journal->j_wait_updates, &wait);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 501) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 502) spin_unlock(&commit_transaction->t_handle_lock);
96f1e09745750 (Jan Kara 2018-12-03 23:16:07 -0500 503) commit_transaction->t_state = T_SWITCH;
96f1e09745750 (Jan Kara 2018-12-03 23:16:07 -0500 504) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 505)
a51dca9cd3bb4 (Theodore Ts'o 2010-08-02 08:43:25 -0400 506) J_ASSERT (atomic_read(&commit_transaction->t_outstanding_credits) <=
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 507) journal->j_max_transaction_buffers);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 508)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 509) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 510) * First thing we are allowed to do is to discard any remaining
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 511) * BJ_Reserved buffers. Note, it is _not_ permissible to assume
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 512) * that there are no such buffers: if a large filesystem
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 513) * operation like a truncate needs to split itself over multiple
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 514) * transactions, then it may try to do a jbd2_journal_restart() while
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 515) * there are still BJ_Reserved buffers outstanding. These must
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 516) * be released cleanly from the current transaction.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 517) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 518) * In this case, the filesystem must still reserve write access
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 519) * again before modifying the buffer in the new transaction, but
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 520) * we do not require it to remember exactly which old buffers it
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 521) * has reserved. This is consistent with the existing behaviour
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 522) * that multiple jbd2_journal_get_write_access() calls to the same
25985edcedea6 (Lucas De Marchi 2011-03-30 22:57:33 -0300 523) * buffer are perfectly permissible.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 524) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 525) while (commit_transaction->t_reserved_list) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 526) jh = commit_transaction->t_reserved_list;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 527) JBUFFER_TRACE(jh, "reserved, unused: refile");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 528) /*
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 529) * A jbd2_journal_get_undo_access()+jbd2_journal_release_buffer() may
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 530) * leave undo-committed data.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 531) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 532) if (jh->b_committed_data) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 533) struct buffer_head *bh = jh2bh(jh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 534)
464170647b564 (Thomas Gleixner 2019-08-09 14:42:32 +0200 535) spin_lock(&jh->b_state_lock);
af1e76d6b3f37 (Mingming Cao 2007-10-16 18:38:25 -0400 536) jbd2_free(jh->b_committed_data, bh->b_size);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 537) jh->b_committed_data = NULL;
464170647b564 (Thomas Gleixner 2019-08-09 14:42:32 +0200 538) spin_unlock(&jh->b_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 539) }
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 540) jbd2_journal_refile_buffer(journal, jh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 541) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 542)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 543) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 544) * Now try to drop any written-back buffers from the journal's
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 545) * checkpoint lists. We do this *before* commit because it potentially
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 546) * frees some memory
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 547) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 548) spin_lock(&journal->j_list_lock);
841df7df19623 (Jan Kara 2015-07-28 14:57:14 -0400 549) __jbd2_journal_clean_checkpoint_list(journal, false);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 550) spin_unlock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 551)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 552) jbd_debug(3, "JBD2: commit phase 1\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 553)
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 554) /*
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 555) * Clear revoked flag to reflect there is no revoked buffers
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 556) * in the next transaction which is going to be started.
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 557) */
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 558) jbd2_clear_buffer_revoked_flags(journal);
1ba37268cd19e (Yongqiang Yang 2011-12-28 17:46:46 -0500 559)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 560) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 561) * Switch to a new revoke table.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 562) */
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 563) jbd2_journal_switch_revoke_table(journal);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 564)
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 565) /*
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 566) * Reserved credits cannot be claimed anymore, free them
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 567) */
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 568) atomic_sub(atomic_read(&journal->j_reserved_credits),
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 569) &commit_transaction->t_outstanding_credits);
8f7d89f36829b (Jan Kara 2013-06-04 12:35:11 -0400 570)
96f1e09745750 (Jan Kara 2018-12-03 23:16:07 -0500 571) write_lock(&journal->j_state_lock);
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 572) trace_jbd2_commit_flushing(journal, commit_transaction);
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 573) stats.run.rs_flushing = jiffies;
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 574) stats.run.rs_locked = jbd2_time_diff(stats.run.rs_locked,
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 575) stats.run.rs_flushing);
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 576)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 577) commit_transaction->t_state = T_FLUSH;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 578) journal->j_committing_transaction = commit_transaction;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 579) journal->j_running_transaction = NULL;
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 580) start_time = ktime_get();
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 581) commit_transaction->t_log_start = journal->j_head;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 582) wake_up(&journal->j_wait_transaction_locked);
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 583) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 584)
cfc7bc896f452 (Paul Gortmaker 2013-06-12 22:56:35 -0400 585) jbd_debug(3, "JBD2: commit phase 2a\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 586)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 587) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 588) * Now start flushing things to disk, in the order they appear
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 589) * on the transaction lists. Data blocks go first.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 590) */
cd1aac32923a9 (Aneesh Kumar K.V 2008-07-11 19:27:31 -0400 591) err = journal_submit_data_buffers(journal, commit_transaction);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 592) if (err)
a7fa2baf8e2a6 (Jan Kara 2007-10-16 18:38:25 -0400 593) jbd2_journal_abort(journal, err);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 594)
82f04ab47e1d9 (Jens Axboe 2011-03-17 11:01:52 +0100 595) blk_start_plug(&plug);
9bcf976cb8b86 (Jan Kara 2016-02-22 23:07:30 -0500 596) jbd2_journal_write_revoke_records(commit_transaction, &log_bufs);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 597)
cfc7bc896f452 (Paul Gortmaker 2013-06-12 22:56:35 -0400 598) jbd_debug(3, "JBD2: commit phase 2b\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 599)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 600) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 601) * Way to go: we have now written out all of the data for a
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 602) * transaction! Now comes the tricky part: we need to write out
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 603) * metadata. Loop over the transaction's entire buffer list:
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 604) */
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 605) write_lock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 606) commit_transaction->t_state = T_COMMIT;
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 607) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 608)
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 609) trace_jbd2_commit_logging(journal, commit_transaction);
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 610) stats.run.rs_logging = jiffies;
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 611) stats.run.rs_flushing = jbd2_time_diff(stats.run.rs_flushing,
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 612) stats.run.rs_logging);
9f356e5a4f120 (Jan Kara 2019-11-05 17:44:24 +0100 613) stats.run.rs_blocks = commit_transaction->t_nr_buffers;
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 614) stats.run.rs_blocks_logged = 0;
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 615)
1dfc3220d9633 (Josef Bacik 2008-04-17 10:38:59 -0400 616) J_ASSERT(commit_transaction->t_nr_buffers <=
a51dca9cd3bb4 (Theodore Ts'o 2010-08-02 08:43:25 -0400 617) atomic_read(&commit_transaction->t_outstanding_credits));
1dfc3220d9633 (Josef Bacik 2008-04-17 10:38:59 -0400 618)
87c89c232c8f7 (Jan Kara 2008-07-11 19:27:31 -0400 619) err = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 620) bufs = 0;
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 621) descriptor = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 622) while (commit_transaction->t_buffers) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 623)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 624) /* Find the next buffer to be journaled... */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 625)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 626) jh = commit_transaction->t_buffers;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 627)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 628) /* If we're in abort mode, we just un-journal the buffer and
7ad7445f60fe4 (Hidehiro Kawai 2008-10-10 20:29:31 -0400 629) release it. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 630)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 631) if (is_journal_aborted(journal)) {
7ad7445f60fe4 (Hidehiro Kawai 2008-10-10 20:29:31 -0400 632) clear_buffer_jbddirty(jh2bh(jh));
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 633) JBUFFER_TRACE(jh, "journal is aborting: refile");
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 634) jbd2_buffer_abort_trigger(jh,
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 635) jh->b_frozen_data ?
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 636) jh->b_frozen_triggers :
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 637) jh->b_triggers);
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 638) jbd2_journal_refile_buffer(journal, jh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 639) /* If that was the last one, we need to clean up
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 640) * any descriptor buffers which may have been
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 641) * already allocated, even if we are now
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 642) * aborting. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 643) if (!commit_transaction->t_buffers)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 644) goto start_journal_io;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 645) continue;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 646) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 647)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 648) /* Make sure we have a descriptor block in which to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 649) record the metadata buffer. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 650)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 651) if (!descriptor) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 652) J_ASSERT (bufs == 0);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 653)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 654) jbd_debug(4, "JBD2: get descriptor\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 655)
32ab671599a89 (Jan Kara 2016-02-22 23:17:15 -0500 656) descriptor = jbd2_journal_get_descriptor_buffer(
32ab671599a89 (Jan Kara 2016-02-22 23:17:15 -0500 657) commit_transaction,
32ab671599a89 (Jan Kara 2016-02-22 23:17:15 -0500 658) JBD2_DESCRIPTOR_BLOCK);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 659) if (!descriptor) {
a7fa2baf8e2a6 (Jan Kara 2007-10-16 18:38:25 -0400 660) jbd2_journal_abort(journal, -EIO);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 661) continue;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 662) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 663)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 664) jbd_debug(4, "JBD2: got buffer %llu (%p)\n",
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 665) (unsigned long long)descriptor->b_blocknr,
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 666) descriptor->b_data);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 667) tagp = &descriptor->b_data[sizeof(journal_header_t)];
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 668) space_left = descriptor->b_size -
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 669) sizeof(journal_header_t);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 670) first_tag = 1;
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 671) set_buffer_jwrite(descriptor);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 672) set_buffer_dirty(descriptor);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 673) wbuf[bufs++] = descriptor;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 674)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 675) /* Record it so that we can wait for IO
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 676) completion later */
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 677) BUFFER_TRACE(descriptor, "ph3: file as descriptor");
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 678) jbd2_file_log_bh(&log_bufs, descriptor);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 679) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 680)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 681) /* Where is the buffer to be written? */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 682)
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 683) err = jbd2_journal_next_log_block(journal, &blocknr);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 684) /* If the block mapping failed, just abandon the buffer
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 685) and repeat this loop: we'll fall into the
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 686) refile-on-abort condition above. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 687) if (err) {
a7fa2baf8e2a6 (Jan Kara 2007-10-16 18:38:25 -0400 688) jbd2_journal_abort(journal, err);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 689) continue;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 690) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 691)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 692) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 693) * start_this_handle() uses t_outstanding_credits to determine
0db4588945364 (Jan Kara 2019-11-05 17:44:08 +0100 694) * the free space in the log.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 695) */
a51dca9cd3bb4 (Theodore Ts'o 2010-08-02 08:43:25 -0400 696) atomic_dec(&commit_transaction->t_outstanding_credits);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 697)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 698) /* Bump b_count to prevent truncate from stumbling over
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 699) the shadowed buffer! @@@ This can go if we ever get
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 700) rid of the shadow pairing of buffers. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 701) atomic_inc(&jh2bh(jh)->b_count);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 702)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 703) /*
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 704) * Make a temporary IO buffer with which to write it out
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 705) * (this will requeue the metadata buffer to BJ_Shadow).
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 706) */
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 707) set_bit(BH_JWrite, &jh2bh(jh)->b_state);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 708) JBUFFER_TRACE(jh, "ph3: write metadata");
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 709) flags = jbd2_journal_write_metadata_buffer(commit_transaction,
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 710) jh, &wbuf[bufs], blocknr);
e6ec116b67f46 (Theodore Ts'o 2009-12-01 09:04:42 -0500 711) if (flags < 0) {
e6ec116b67f46 (Theodore Ts'o 2009-12-01 09:04:42 -0500 712) jbd2_journal_abort(journal, flags);
e6ec116b67f46 (Theodore Ts'o 2009-12-01 09:04:42 -0500 713) continue;
e6ec116b67f46 (Theodore Ts'o 2009-12-01 09:04:42 -0500 714) }
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 715) jbd2_file_log_bh(&io_bufs, wbuf[bufs]);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 716)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 717) /* Record the new block's tag in the current descriptor
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 718) buffer */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 719)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 720) tag_flag = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 721) if (flags & 1)
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 722) tag_flag |= JBD2_FLAG_ESCAPE;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 723) if (!first_tag)
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 724) tag_flag |= JBD2_FLAG_SAME_UUID;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 725)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 726) tag = (journal_block_tag_t *) tagp;
db9ee220361de (Darrick J. Wong 2014-08-27 18:40:07 -0400 727) write_tag_block(journal, tag, jh2bh(jh)->b_blocknr);
8f888ef846d44 (Darrick J. Wong 2012-05-22 22:43:41 -0400 728) tag->t_flags = cpu_to_be16(tag_flag);
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 729) jbd2_block_tag_csum_set(journal, tag, wbuf[bufs],
c390087591dcb (Darrick J. Wong 2012-05-27 08:12:12 -0400 730) commit_transaction->t_tid);
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 731) tagp += tag_bytes;
b517bea1c74e4 (Zach Brown 2006-10-11 01:21:08 -0700 732) space_left -= tag_bytes;
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 733) bufs++;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 734)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 735) if (first_tag) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 736) memcpy (tagp, journal->j_uuid, 16);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 737) tagp += 16;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 738) space_left -= 16;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 739) first_tag = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 740) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 741)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 742) /* If there's no more to do, or if the descriptor is full,
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 743) let the IO rip! */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 744)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 745) if (bufs == journal->j_wbufsize ||
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 746) commit_transaction->t_buffers == NULL ||
3caa487f53f65 (Darrick J. Wong 2012-05-27 08:10:22 -0400 747) space_left < tag_bytes + 16 + csum_size) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 748)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 749) jbd_debug(4, "JBD2: Submit %d IOs\n", bufs);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 750)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 751) /* Write an end-of-descriptor marker before
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 752) submitting the IOs. "tag" still points to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 753) the last tag we set up. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 754)
8f888ef846d44 (Darrick J. Wong 2012-05-22 22:43:41 -0400 755) tag->t_flags |= cpu_to_be16(JBD2_FLAG_LAST_TAG);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 756) start_journal_io:
6e876c3dd205d (luojiajun 2019-03-01 00:30:00 -0500 757) if (descriptor)
6e876c3dd205d (luojiajun 2019-03-01 00:30:00 -0500 758) jbd2_descriptor_block_csum_set(journal,
6e876c3dd205d (luojiajun 2019-03-01 00:30:00 -0500 759) descriptor);
6e876c3dd205d (luojiajun 2019-03-01 00:30:00 -0500 760)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 761) for (i = 0; i < bufs; i++) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 762) struct buffer_head *bh = wbuf[i];
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 763) /*
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 764) * Compute checksum.
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 765) */
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 766) if (jbd2_has_feature_checksum(journal)) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 767) crc32_sum =
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 768) jbd2_checksum_data(crc32_sum, bh);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 769) }
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 770)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 771) lock_buffer(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 772) clear_buffer_dirty(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 773) set_buffer_uptodate(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 774) bh->b_end_io = journal_end_buffer_io_sync;
70fd76140a6cb (Christoph Hellwig 2016-11-01 07:40:10 -0600 775) submit_bh(REQ_OP_WRITE, REQ_SYNC, bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 776) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 777) cond_resched();
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 778)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 779) /* Force a new descriptor to be generated next
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 780) time round the loop. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 781) descriptor = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 782) bufs = 0;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 783) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 784) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 785)
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 786) err = journal_finish_inode_data_buffers(journal, commit_transaction);
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 787) if (err) {
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 788) printk(KERN_WARNING
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 789) "JBD2: Detected IO errors while flushing file data "
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 790) "on %s\n", journal->j_devname);
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 791) if (journal->j_flags & JBD2_ABORT_ON_SYNCDATA_ERR)
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 792) jbd2_journal_abort(journal, err);
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 793) err = 0;
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 794) }
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 795)
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 796) /*
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 797) * Get current oldest transaction in the log before we issue flush
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 798) * to the filesystem device. After the flush we can be sure that
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 799) * blocks of all older transactions are checkpointed to persistent
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 800) * storage and we will be safe to update journal start in the
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 801) * superblock with the numbers we get here.
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 802) */
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 803) update_tail =
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 804) jbd2_journal_get_log_tail(journal, &first_tid, &first_block);
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 805)
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 806) write_lock(&journal->j_state_lock);
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 807) if (update_tail) {
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 808) long freed = first_block - journal->j_tail;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 809)
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 810) if (first_block < journal->j_tail)
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 811) freed += journal->j_last - journal->j_first;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 812) /* Update tail only if we free significant amount of space */
ede7dc7fa0af6 (Harshad Shirwadkar 2020-11-05 19:58:54 -0800 813) if (freed < jbd2_journal_get_max_txn_bufs(journal))
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 814) update_tail = 0;
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 815) }
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 816) J_ASSERT(commit_transaction->t_state == T_COMMIT);
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 817) commit_transaction->t_state = T_COMMIT_DFLUSH;
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 818) write_unlock(&journal->j_state_lock);
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 819)
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 820) /*
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 821) * If the journal is not located on the file system device,
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 822) * then we must flush the file system device before we issue
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 823) * the commit record
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 824) */
81be12c8179c1 (Jan Kara 2011-05-24 11:52:40 -0400 825) if (commit_transaction->t_need_data_flush &&
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 826) (journal->j_fs_dev != journal->j_dev) &&
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 827) (journal->j_flags & JBD2_BARRIER))
c6bf3f0e25f4c (Christoph Hellwig 2021-01-26 15:52:35 +0100 828) blkdev_issue_flush(journal->j_fs_dev);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 829)
cc3e1bea5d876 (Theodore Ts'o 2009-12-23 06:52:08 -0500 830) /* Done it all: now write the commit record asynchronously. */
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 831) if (jbd2_has_feature_async_commit(journal)) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 832) err = journal_submit_commit_record(journal, commit_transaction,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 833) &cbh, crc32_sum);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 834) if (err)
d0a186e0d3e7a (zhangyi (F) 2019-12-04 20:46:11 +0800 835) jbd2_journal_abort(journal, err);
e9e34f4e8f421 (Hidehiro Kawai 2008-07-31 22:26:04 -0400 836) }
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 837)
82f04ab47e1d9 (Jens Axboe 2011-03-17 11:01:52 +0100 838) blk_finish_plug(&plug);
82f04ab47e1d9 (Jens Axboe 2011-03-17 11:01:52 +0100 839)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 840) /* Lo and behold: we have just managed to send a transaction to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 841) the log. Before we can commit it, wait for the IO so far to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 842) complete. Control buffers being written are on the
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 843) transaction's t_log_list queue, and metadata buffers are on
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 844) the io_bufs list.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 845)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 846) Wait for the buffers in reverse order. That way we are
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 847) less likely to be woken up until all IOs have completed, and
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 848) so we incur less scheduling load.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 849) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 850)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 851) jbd_debug(3, "JBD2: commit phase 3\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 852)
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 853) while (!list_empty(&io_bufs)) {
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 854) struct buffer_head *bh = list_entry(io_bufs.prev,
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 855) struct buffer_head,
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 856) b_assoc_buffers);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 857)
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 858) wait_on_buffer(bh);
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 859) cond_resched();
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 860)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 861) if (unlikely(!buffer_uptodate(bh)))
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 862) err = -EIO;
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 863) jbd2_unfile_log_bh(bh);
015c603306820 (Jan Kara 2019-11-05 17:44:19 +0100 864) stats.run.rs_blocks_logged++;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 865)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 866) /*
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 867) * The list contains temporary buffer heads created by
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 868) * jbd2_journal_write_metadata_buffer().
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 869) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 870) BUFFER_TRACE(bh, "dumping temporary bh");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 871) __brelse(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 872) J_ASSERT_BH(bh, atomic_read(&bh->b_count) == 0);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 873) free_buffer_head(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 874)
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 875) /* We also have to refile the corresponding shadowed buffer */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 876) jh = commit_transaction->t_shadow_list->b_tprev;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 877) bh = jh2bh(jh);
f5113effc2a2e (Jan Kara 2013-06-04 12:01:45 -0400 878) clear_buffer_jwrite(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 879) J_ASSERT_BH(bh, buffer_jbddirty(bh));
b34090e5e22a0 (Jan Kara 2013-06-04 12:08:56 -0400 880) J_ASSERT_BH(bh, !buffer_shadow(bh));
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 881)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 882) /* The metadata is now released for reuse, but we need
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 883) to remember it against this transaction so that when
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 884) we finally commit, we can do any checkpointing
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 885) required. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 886) JBUFFER_TRACE(jh, "file as BJ_Forget");
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 887) jbd2_journal_file_buffer(jh, commit_transaction, BJ_Forget);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 888) JBUFFER_TRACE(jh, "brelse shadowed buffer");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 889) __brelse(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 890) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 891)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 892) J_ASSERT (commit_transaction->t_shadow_list == NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 893)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 894) jbd_debug(3, "JBD2: commit phase 4\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 895)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 896) /* Here we wait for the revoke record and descriptor record buffers */
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 897) while (!list_empty(&log_bufs)) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 898) struct buffer_head *bh;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 899)
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 900) bh = list_entry(log_bufs.prev, struct buffer_head, b_assoc_buffers);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 901) wait_on_buffer(bh);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 902) cond_resched();
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 903)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 904) if (unlikely(!buffer_uptodate(bh)))
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 905) err = -EIO;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 906)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 907) BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 908) clear_buffer_jwrite(bh);
e5a120aeb57f4 (Jan Kara 2013-06-04 12:06:01 -0400 909) jbd2_unfile_log_bh(bh);
015c603306820 (Jan Kara 2019-11-05 17:44:19 +0100 910) stats.run.rs_blocks_logged++;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 911) __brelse(bh); /* One for getblk */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 912) /* AKPM: bforget here */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 913) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 914)
77e841de8abac (Hidehiro Kawai 2008-10-12 16:39:16 -0400 915) if (err)
77e841de8abac (Hidehiro Kawai 2008-10-12 16:39:16 -0400 916) jbd2_journal_abort(journal, err);
77e841de8abac (Hidehiro Kawai 2008-10-12 16:39:16 -0400 917)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 918) jbd_debug(3, "JBD2: commit phase 5\n");
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 919) write_lock(&journal->j_state_lock);
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 920) J_ASSERT(commit_transaction->t_state == T_COMMIT_DFLUSH);
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 921) commit_transaction->t_state = T_COMMIT_JFLUSH;
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 922) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 923)
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 924) if (!jbd2_has_feature_async_commit(journal)) {
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 925) err = journal_submit_commit_record(journal, commit_transaction,
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 926) &cbh, crc32_sum);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 927) if (err)
d0a186e0d3e7a (zhangyi (F) 2019-12-04 20:46:11 +0800 928) jbd2_journal_abort(journal, err);
818d276ceb83a (Girish Shilamkar 2008-01-28 23:58:27 -0500 929) }
6cba611e600de (Zhang Huan 2011-04-05 19:16:20 -0400 930) if (cbh)
fd98496f467b3 (Theodore Ts'o 2009-01-05 21:34:13 -0500 931) err = journal_wait_on_commit_record(journal, cbh);
015c603306820 (Jan Kara 2019-11-05 17:44:19 +0100 932) stats.run.rs_blocks_logged++;
56316a0d28f25 (Darrick J. Wong 2015-10-17 16:18:45 -0400 933) if (jbd2_has_feature_async_commit(journal) &&
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 934) journal->j_flags & JBD2_BARRIER) {
c6bf3f0e25f4c (Christoph Hellwig 2021-01-26 15:52:35 +0100 935) blkdev_issue_flush(journal->j_dev);
f73bee49855fe (Jan Kara 2010-08-18 15:56:56 +0200 936) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 937)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 938) if (err)
a7fa2baf8e2a6 (Jan Kara 2007-10-16 18:38:25 -0400 939) jbd2_journal_abort(journal, err);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 940)
9f356e5a4f120 (Jan Kara 2019-11-05 17:44:24 +0100 941) WARN_ON_ONCE(
9f356e5a4f120 (Jan Kara 2019-11-05 17:44:24 +0100 942) atomic_read(&commit_transaction->t_outstanding_credits) < 0);
9f356e5a4f120 (Jan Kara 2019-11-05 17:44:24 +0100 943)
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 944) /*
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 945) * Now disk caches for filesystem device are flushed so we are safe to
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 946) * erase checkpointed transactions from the log by updating journal
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 947) * superblock.
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 948) */
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 949) if (update_tail)
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 950) jbd2_update_log_tail(journal, first_tid, first_block);
3339578f05787 (Jan Kara 2012-03-13 22:45:38 -0400 951)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 952) /* End of a transaction! Finally, we can do checkpoint
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 953) processing: any buffers committed as a result of this
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 954) transaction can be removed from any checkpoint list it was on
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 955) before. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 956)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 957) jbd_debug(3, "JBD2: commit phase 6\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 958)
c851ed5401737 (Jan Kara 2008-07-11 19:27:31 -0400 959) J_ASSERT(list_empty(&commit_transaction->t_inode_list));
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 960) J_ASSERT(commit_transaction->t_buffers == NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 961) J_ASSERT(commit_transaction->t_checkpoint_list == NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 962) J_ASSERT(commit_transaction->t_shadow_list == NULL);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 963)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 964) restart_loop:
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 965) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 966) * As there are other places (journal_unmap_buffer()) adding buffers
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 967) * to this list we have to be careful and hold the j_list_lock.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 968) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 969) spin_lock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 970) while (commit_transaction->t_forget) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 971) transaction_t *cp_transaction;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 972) struct buffer_head *bh;
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 973) int try_to_free = 0;
93108ebb848df (Jan Kara 2019-08-09 14:42:29 +0200 974) bool drop_ref;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 975)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 976) jh = commit_transaction->t_forget;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 977) spin_unlock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 978) bh = jh2bh(jh);
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 979) /*
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 980) * Get a reference so that bh cannot be freed before we are
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 981) * done with it.
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 982) */
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 983) get_bh(bh);
464170647b564 (Thomas Gleixner 2019-08-09 14:42:32 +0200 984) spin_lock(&jh->b_state_lock);
23e2af3518fac (dingdinghua 2010-02-24 12:11:20 -0500 985) J_ASSERT_JH(jh, jh->b_transaction == commit_transaction);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 986)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 987) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 988) * If there is undo-protected committed data against
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 989) * this buffer, then we can remove it now. If it is a
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 990) * buffer needing such protection, the old frozen_data
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 991) * field now points to a committed version of the
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 992) * buffer, so rotate that field to the new committed
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 993) * data.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 994) *
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 995) * Otherwise, we can just throw away the frozen data now.
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 996) *
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 997) * We also know that the frozen data has already fired
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 998) * its triggers if they exist, so we can clear that too.
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 999) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1000) if (jh->b_committed_data) {
af1e76d6b3f37 (Mingming Cao 2007-10-16 18:38:25 -0400 1001) jbd2_free(jh->b_committed_data, bh->b_size);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1002) jh->b_committed_data = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1003) if (jh->b_frozen_data) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1004) jh->b_committed_data = jh->b_frozen_data;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1005) jh->b_frozen_data = NULL;
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 1006) jh->b_frozen_triggers = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1007) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1008) } else if (jh->b_frozen_data) {
af1e76d6b3f37 (Mingming Cao 2007-10-16 18:38:25 -0400 1009) jbd2_free(jh->b_frozen_data, bh->b_size);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1010) jh->b_frozen_data = NULL;
e06c8227fd94e (Joel Becker 2008-09-11 15:35:47 -0700 1011) jh->b_frozen_triggers = NULL;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1012) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1013)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1014) spin_lock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1015) cp_transaction = jh->b_cp_transaction;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1016) if (cp_transaction) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1017) JBUFFER_TRACE(jh, "remove from old cp transaction");
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1018) cp_transaction->t_chp_stats.cs_dropped++;
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 1019) __jbd2_journal_remove_checkpoint(jh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1020) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1021)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1022) /* Only re-checkpoint the buffer_head if it is marked
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1023) * dirty. If the buffer was added to the BJ_Forget list
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 1024) * by jbd2_journal_forget, it may no longer be dirty and
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1025) * there's no point in keeping a checkpoint record for
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1026) * it. */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1027)
b794e7a6ebfbd (Jan Kara 2012-09-26 23:11:13 -0400 1028) /*
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1029) * A buffer which has been freed while still being journaled
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1030) * by a previous transaction, refile the buffer to BJ_Forget of
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1031) * the running transaction. If the just committed transaction
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1032) * contains "add to orphan" operation, we can completely
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1033) * invalidate the buffer now. We are rather through in that
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1034) * since the buffer may be still accessible when blocksize <
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1035) * pagesize and it is attached to the last partial page.
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1036) */
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1037) if (buffer_freed(bh) && !jh->b_next_transaction) {
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1038) struct address_space *mapping;
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1039)
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1040) clear_buffer_freed(bh);
6a66a7ded12ba (zhangyi (F) 2020-02-13 14:38:20 +0800 1041) clear_buffer_jbddirty(bh);
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1042)
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1043) /*
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1044) * Block device buffers need to stay mapped all the
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1045) * time, so it is enough to clear buffer_jbddirty and
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1046) * buffer_freed bits. For the file mapping buffers (i.e.
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1047) * journalled data) we need to unmap buffer and clear
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1048) * more bits. We also need to be careful about the check
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1049) * because the data page mapping can get cleared under
780f66e59231f (zhangyi (F) 2020-02-17 19:27:06 +0800 1050) * our hands. Note that if mapping == NULL, we don't
780f66e59231f (zhangyi (F) 2020-02-17 19:27:06 +0800 1051) * need to make buffer unmapped because the page is
780f66e59231f (zhangyi (F) 2020-02-17 19:27:06 +0800 1052) * already detached from the mapping and buffers cannot
780f66e59231f (zhangyi (F) 2020-02-17 19:27:06 +0800 1053) * get reused.
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1054) */
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1055) mapping = READ_ONCE(bh->b_page->mapping);
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1056) if (mapping && !sb_is_blkdev_sb(mapping->host->i_sb)) {
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1057) clear_buffer_mapped(bh);
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1058) clear_buffer_new(bh);
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1059) clear_buffer_req(bh);
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1060) bh->b_bdev = NULL;
c96dceeabf765 (zhangyi (F) 2020-02-13 14:38:21 +0800 1061) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1062) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1063)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1064) if (buffer_jbddirty(bh)) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1065) JBUFFER_TRACE(jh, "add to new checkpointing trans");
f7f4bccb72984 (Mingming Cao 2006-10-11 01:20:59 -0700 1066) __jbd2_journal_insert_checkpoint(jh, commit_transaction);
7ad7445f60fe4 (Hidehiro Kawai 2008-10-10 20:29:31 -0400 1067) if (is_journal_aborted(journal))
7ad7445f60fe4 (Hidehiro Kawai 2008-10-10 20:29:31 -0400 1068) clear_buffer_jbddirty(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1069) } else {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1070) J_ASSERT_BH(bh, !buffer_dirty(bh));
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1071) /*
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1072) * The buffer on BJ_Forget list and not jbddirty means
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1073) * it has been freed by this transaction and hence it
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1074) * could not have been reallocated until this
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1075) * transaction has committed. *BUT* it could be
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1076) * reallocated once we have written all the data to
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1077) * disk and before we process the buffer on BJ_Forget
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1078) * list.
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1079) */
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1080) if (!jh->b_next_transaction)
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1081) try_to_free = 1;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1082) }
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1083) JBUFFER_TRACE(jh, "refile or unfile buffer");
93108ebb848df (Jan Kara 2019-08-09 14:42:29 +0200 1084) drop_ref = __jbd2_journal_refile_buffer(jh);
464170647b564 (Thomas Gleixner 2019-08-09 14:42:32 +0200 1085) spin_unlock(&jh->b_state_lock);
93108ebb848df (Jan Kara 2019-08-09 14:42:29 +0200 1086) if (drop_ref)
93108ebb848df (Jan Kara 2019-08-09 14:42:29 +0200 1087) jbd2_journal_put_journal_head(jh);
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1088) if (try_to_free)
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1089) release_buffer_page(bh); /* Drops bh reference */
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1090) else
de1b794130b13 (Jan Kara 2011-06-13 15:38:22 -0400 1091) __brelse(bh);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1092) cond_resched_lock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1093) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1094) spin_unlock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1095) /*
f5a7a6b0d9b6a (Jan Kara 2008-01-28 23:58:27 -0500 1096) * This is a bit sleazy. We use j_list_lock to protect transition
f5a7a6b0d9b6a (Jan Kara 2008-01-28 23:58:27 -0500 1097) * of a transaction into T_FINISHED state and calling
f5a7a6b0d9b6a (Jan Kara 2008-01-28 23:58:27 -0500 1098) * __jbd2_journal_drop_transaction(). Otherwise we could race with
f5a7a6b0d9b6a (Jan Kara 2008-01-28 23:58:27 -0500 1099) * other checkpointing code processing the transaction...
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1100) */
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 1101) write_lock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1102) spin_lock(&journal->j_list_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1103) /*
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1104) * Now recheck if some buffers did not get attached to the transaction
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1105) * while the lock was dropped...
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1106) */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1107) if (commit_transaction->t_forget) {
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1108) spin_unlock(&journal->j_list_lock);
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 1109) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1110) goto restart_loop;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1111) }
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1112)
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1113) /* Add the transaction to the checkpoint list
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1114) * __journal_remove_checkpoint() can not destroy transaction
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1115) * under us because it is not marked as T_FINISHED yet */
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1116) if (journal->j_checkpoint_transactions == NULL) {
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1117) journal->j_checkpoint_transactions = commit_transaction;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1118) commit_transaction->t_cpnext = commit_transaction;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1119) commit_transaction->t_cpprev = commit_transaction;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1120) } else {
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1121) commit_transaction->t_cpnext =
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1122) journal->j_checkpoint_transactions;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1123) commit_transaction->t_cpprev =
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1124) commit_transaction->t_cpnext->t_cpprev;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1125) commit_transaction->t_cpnext->t_cpprev =
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1126) commit_transaction;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1127) commit_transaction->t_cpprev->t_cpnext =
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1128) commit_transaction;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1129) }
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1130) spin_unlock(&journal->j_list_lock);
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1131)
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1132) /* Done with this transaction! */
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1133)
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 1134) jbd_debug(3, "JBD2: commit phase 7\n");
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1135)
bbd2be3691072 (Jan Kara 2011-05-24 11:59:18 -0400 1136) J_ASSERT(commit_transaction->t_state == T_COMMIT_JFLUSH);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1137)
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1138) commit_transaction->t_start = jiffies;
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 1139) stats.run.rs_logging = jbd2_time_diff(stats.run.rs_logging,
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 1140) commit_transaction->t_start);
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1141)
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1142) /*
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 1143) * File the transaction statistics
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1144) */
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1145) stats.ts_tid = commit_transaction->t_tid;
8dd420466c7bf (Theodore Ts'o 2010-08-03 21:38:29 -0400 1146) stats.run.rs_handle_count =
8dd420466c7bf (Theodore Ts'o 2010-08-03 21:38:29 -0400 1147) atomic_read(&commit_transaction->t_handle_count);
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 1148) trace_jbd2_run_stats(journal->j_fs_dev->bd_dev,
bf6993276f74d (Theodore Ts'o 2009-09-30 00:32:06 -0400 1149) commit_transaction->t_tid, &stats.run);
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1150) stats.ts_requested = (commit_transaction->t_requested) ? 1 : 0;
8e85fb3f305b2 (Johann Lombardi 2008-01-28 23:58:27 -0500 1151)
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1152) commit_transaction->t_state = T_COMMIT_CALLBACK;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1153) J_ASSERT(commit_transaction == journal->j_committing_transaction);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1154) journal->j_commit_sequence = commit_transaction->t_tid;
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1155) journal->j_committing_transaction = NULL;
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1156) commit_time = ktime_to_ns(ktime_sub(ktime_get(), start_time));
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1157)
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1158) /*
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1159) * weight the commit time higher than the average time so we don't
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1160) * react too strongly to vast changes in the commit time
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1161) */
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1162) if (likely(journal->j_average_commit_time))
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1163) journal->j_average_commit_time = (commit_time +
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1164) journal->j_average_commit_time*3) / 4;
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1165) else
e07f7183a486c (Josef Bacik 2008-11-26 01:14:26 -0500 1166) journal->j_average_commit_time = commit_time;
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1167)
a931da6ac9331 (Theodore Ts'o 2010-08-03 21:35:12 -0400 1168) write_unlock(&journal->j_state_lock);
6c20ec850360b (Theodore Ts'o 2008-10-28 21:08:20 -0400 1169)
fb68407b0d9ef (Aneesh Kumar K.V 2008-11-06 17:50:21 -0500 1170) if (journal->j_commit_callback)
fb68407b0d9ef (Aneesh Kumar K.V 2008-11-06 17:50:21 -0500 1171) journal->j_commit_callback(journal, commit_transaction);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 1172) if (journal->j_fc_cleanup_callback)
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 1173) journal->j_fc_cleanup_callback(journal, 1);
fb68407b0d9ef (Aneesh Kumar K.V 2008-11-06 17:50:21 -0500 1174)
879c5e6b7cb4c (Theodore Ts'o 2009-06-17 11:47:48 -0400 1175) trace_jbd2_end_commit(journal, commit_transaction);
f2a44523b20f3 (Eryu Guan 2011-11-01 19:09:18 -0400 1176) jbd_debug(1, "JBD2: commit %d complete, head %d\n",
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1177) journal->j_commit_sequence, journal->j_tail_sequence);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1178)
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1179) write_lock(&journal->j_state_lock);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 1180) journal->j_flags &= ~JBD2_FULL_COMMIT_ONGOING;
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 1181) journal->j_flags &= ~JBD2_FAST_COMMIT_ONGOING;
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1182) spin_lock(&journal->j_list_lock);
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1183) commit_transaction->t_state = T_FINISHED;
d4e839d4a9dc3 (Theodore Ts'o 2014-03-08 22:34:10 -0500 1184) /* Check if the transaction can be dropped now that we are finished */
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1185) if (commit_transaction->t_checkpoint_list == NULL &&
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1186) commit_transaction->t_checkpoint_io_list == NULL) {
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1187) __jbd2_journal_drop_transaction(journal, commit_transaction);
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1188) jbd2_journal_free_transaction(commit_transaction);
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1189) }
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1190) spin_unlock(&journal->j_list_lock);
794446c694651 (Dmitry Monakhov 2013-04-03 22:06:52 -0400 1191) write_unlock(&journal->j_state_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1192) wake_up(&journal->j_wait_done_commit);
ff780b91efe90 (Harshad Shirwadkar 2020-10-15 13:37:56 -0700 1193) wake_up(&journal->j_fc_wait);
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1194)
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1195) /*
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1196) * Calculate overall stats
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1197) */
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1198) spin_lock(&journal->j_history_lock);
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1199) journal->j_stats.ts_tid++;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1200) journal->j_stats.ts_requested += stats.ts_requested;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1201) journal->j_stats.run.rs_wait += stats.run.rs_wait;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1202) journal->j_stats.run.rs_request_delay += stats.run.rs_request_delay;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1203) journal->j_stats.run.rs_running += stats.run.rs_running;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1204) journal->j_stats.run.rs_locked += stats.run.rs_locked;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1205) journal->j_stats.run.rs_flushing += stats.run.rs_flushing;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1206) journal->j_stats.run.rs_logging += stats.run.rs_logging;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1207) journal->j_stats.run.rs_handle_count += stats.run.rs_handle_count;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1208) journal->j_stats.run.rs_blocks += stats.run.rs_blocks;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1209) journal->j_stats.run.rs_blocks_logged += stats.run.rs_blocks_logged;
42cf3452d5f5b (Theodore Ts'o 2014-03-08 19:51:16 -0500 1210) spin_unlock(&journal->j_history_lock);
470decc613ab2 (Dave Kleikamp 2006-10-11 01:20:57 -0700 1211) }
VisionFive2 Linux kernel
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