On Tue, Apr 26, 2022 at 10:43:28AM -0700, Stefan Roesch wrote:
> This adds the async buffered write support to XFS. For async buffered
> write requests, the request will return -EAGAIN if the ilock cannot be
> obtained immediately.
>
> Signed-off-by: Stefan Roesch <shr@xxxxxx>
> ---
> fs/xfs/xfs_file.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
> index 6f9da1059e8b..49d54b939502 100644
> --- a/fs/xfs/xfs_file.c
> +++ b/fs/xfs/xfs_file.c
> @@ -739,12 +739,14 @@ xfs_file_buffered_write(
> bool cleared_space = false;
> int iolock;
>
> - if (iocb->ki_flags & IOCB_NOWAIT)
> - return -EOPNOTSUPP;
> -
> write_retry:
> iolock = XFS_IOLOCK_EXCL;
> - xfs_ilock(ip, iolock);
> + if (iocb->ki_flags & IOCB_NOWAIT) {
> + if (!xfs_ilock_nowait(ip, iolock))
> + return -EAGAIN;
> + } else {
> + xfs_ilock(ip, iolock);
> + }
xfs_ilock_iocb().
-Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
