VisionFive2 Linux kernel

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

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author: Chao Yu <yuchao0@huawei.com> 2021-03-16 20:30:26 +0800 committer: Damien Le Moal <damien.lemoal@wdc.com> 2021-03-17 08:56:50 +0900 commit: 6980d29ce4da223ad7f0751c7f1d61d3c6b54ab3 parent: ebfd68cd0c1e81267c757332385cb96df30dacce
Commit Summary:
zonefs: fix to update .i_wr_refcnt correctly in zonefs_open_zone()
Diffstat:
1 file changed, 3 insertions, 4 deletions
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 3427c99abb4d..049e36c69ed7 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -1040,9 +1040,7 @@ static int zonefs_open_zone(struct inode *inode)
 
 	mutex_lock(&zi->i_truncate_mutex);
 
-	zi->i_wr_refcnt++;
-	if (zi->i_wr_refcnt == 1) {
-
+	if (!zi->i_wr_refcnt) {
 		if (atomic_inc_return(&sbi->s_open_zones) > sbi->s_max_open_zones) {
 			atomic_dec(&sbi->s_open_zones);
 			ret = -EBUSY;
@@ -1052,7 +1050,6 @@ static int zonefs_open_zone(struct inode *inode)
 		if (i_size_read(inode) < zi->i_max_size) {
 			ret = zonefs_zone_mgmt(inode, REQ_OP_ZONE_OPEN);
 			if (ret) {
-				zi->i_wr_refcnt--;
 				atomic_dec(&sbi->s_open_zones);
 				goto unlock;
 			}
@@ -1060,6 +1057,8 @@ static int zonefs_open_zone(struct inode *inode)
 		}
 	}
 
+	zi->i_wr_refcnt++;
+
 unlock:
 	mutex_unlock(&zi->i_truncate_mutex);