VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: Matthew Wilcox (Oracle) <willy@infradead.org> 2023-06-28 19:55:48 +0100 committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2023-07-19 16:36:50 +0200 commit: e22ca18614d2dfb935d9b32fb13e76f6dccff783 parent: 22f127fffe72d3739e7e0cf4cae413102df2e356
Commit Summary:
writeback: account the number of pages written back
Diffstat:
1 file changed, 5 insertions, 3 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index db7943999007..6faa09f1783b 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2434,6 +2434,7 @@ int write_cache_pages(struct address_space *mapping,
 
 		for (i = 0; i < nr_folios; i++) {
 			struct folio *folio = fbatch.folios[i];
+			unsigned long nr;
 
 			done_index = folio->index;
 
@@ -2471,6 +2472,7 @@ continue_unlock:
 
 			trace_wbc_writepage(wbc, inode_to_bdi(mapping->host));
 			error = writepage(folio, wbc, data);
+			nr = folio_nr_pages(folio);
 			if (unlikely(error)) {
 				/*
 				 * Handle errors according to the type of
@@ -2489,8 +2491,7 @@ continue_unlock:
 					error = 0;
 				} else if (wbc->sync_mode != WB_SYNC_ALL) {
 					ret = error;
-					done_index = folio->index +
-						folio_nr_pages(folio);
+					done_index = folio->index + nr;
 					done = 1;
 					break;
 				}
@@ -2504,7 +2505,8 @@ continue_unlock:
 			 * keep going until we have written all the pages
 			 * we tagged for writeback prior to entering this loop.
 			 */
-			if (--wbc->nr_to_write <= 0 &&
+			wbc->nr_to_write -= nr;
+			if (wbc->nr_to_write <= 0 &&
 			    wbc->sync_mode == WB_SYNC_NONE) {
 				done = 1;
 				break;