From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
commit 5679897eb104cec9e99609c3f045a0c20603da4c upstream.
[backport to 5.10 only differs in __sync_blockdev helper]
Strangely, sync_filesystem ignores the return code from the ->sync_fs
call, which means that syscalls like syncfs(2) never see the error.
This doesn't seem right, so fix that.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Acked-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
---
fs/sync.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/fs/sync.c b/fs/sync.c
index 0d6cdc507cb9..79180e58d862 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -28,7 +28,7 @@
*/
int sync_filesystem(struct super_block *sb)
{
- int ret;
+ int ret = 0;
/*
* We need to be protected against the filesystem going from
@@ -51,15 +51,21 @@ int sync_filesystem(struct super_block *sb)
* at a time.
*/
writeback_inodes_sb(sb, WB_REASON_SYNC);
- if (sb->s_op->sync_fs)
- sb->s_op->sync_fs(sb, 0);
+ if (sb->s_op->sync_fs) {
+ ret = sb->s_op->sync_fs(sb, 0);
+ if (ret)
+ return ret;
+ }
ret = __sync_blockdev(sb->s_bdev, 0);
- if (ret < 0)
+ if (ret)
return ret;
sync_inodes_sb(sb);
- if (sb->s_op->sync_fs)
- sb->s_op->sync_fs(sb, 1);
+ if (sb->s_op->sync_fs) {
+ ret = sb->s_op->sync_fs(sb, 1);
+ if (ret)
+ return ret;
+ }
return __sync_blockdev(sb->s_bdev, 1);
}
EXPORT_SYMBOL(sync_filesystem);
--
2.25.1
