diff mbox series

[2/4] vfs: make sync_filesystem return errors from ->sync_fs

Message ID 164316350055.2600168.13687764982467881652.stgit@magnolia (mailing list archive)
State New
Headers show
Series vfs: actually return fs errors from ->sync_fs | expand

Commit Message

Darrick J. Wong Jan. 26, 2022, 2:18 a.m. UTC
From: Darrick J. Wong <djwong@kernel.org>

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@kernel.org>
---
 fs/sync.c |   18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

Comments

Jan Kara Jan. 26, 2022, 10:44 a.m. UTC | #1
On Tue 25-01-22 18:18:20, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> 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@kernel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/sync.c |   18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> 
> diff --git a/fs/sync.c b/fs/sync.c
> index 3ce8e2137f31..c7690016453e 100644
> --- a/fs/sync.c
> +++ b/fs/sync.c
> @@ -29,7 +29,7 @@
>   */
>  int sync_filesystem(struct super_block *sb)
>  {
> -	int ret;
> +	int ret = 0;
>  
>  	/*
>  	 * We need to be protected against the filesystem going from
> @@ -52,15 +52,21 @@ 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_nowait(sb->s_bdev);
> -	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);
>  }
>  EXPORT_SYMBOL(sync_filesystem);
>
Christoph Hellwig Jan. 26, 2022, 5:01 p.m. UTC | #2
Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/fs/sync.c b/fs/sync.c
index 3ce8e2137f31..c7690016453e 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -29,7 +29,7 @@ 
  */
 int sync_filesystem(struct super_block *sb)
 {
-	int ret;
+	int ret = 0;
 
 	/*
 	 * We need to be protected against the filesystem going from
@@ -52,15 +52,21 @@  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_nowait(sb->s_bdev);
-	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);
 }
 EXPORT_SYMBOL(sync_filesystem);