Re: [PATCH] btrfs: use appropriate replacements for __sb_{start,end}_write calls

[David Sterba]

On Tue, Oct 10, 2017 at 01:48:05PM +0300, Rakesh Pandit wrote:
> Commit a53f4f8e9c8eb ("btrfs: Don't call btrfs_start_transaction() on
> frozen fs to avoid deadlock.") started using internal calls and we
> replace them with more suitable ones.
> 
> Signed-off-by: Rakesh Pandit <rakesh@xxxxxxxxxx>
> ---
>  fs/btrfs/super.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
> index 35a128a..99c21ae 100644
> --- a/fs/btrfs/super.c
> +++ b/fs/btrfs/super.c
> @@ -1205,8 +1205,8 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
>  			 * happens. The pending operations are delayed to the
>  			 * next commit after thawing.
>  			 */
> -			if (__sb_start_write(sb, SB_FREEZE_WRITE, false))
> -				__sb_end_write(sb, SB_FREEZE_WRITE);
> +			if (sb_start_write_trylock(sb))
> +				sb_end_write(sb)

  CC [M]  fs/btrfs/print-tree.o
fs/btrfs/super.c: In function âbtrfs_sync_fsâ:
fs/btrfs/super.c:1210:4: error: expected â;â before âelseâ
    else
    ^~~~

will be fixed.