On Fri, Apr 21, 2023 at 03:16:18PM +0530, Ritesh Harjani (IBM) wrote:
> IOMAP_DIO_NOSYNC earlier was added for use in btrfs. But it seems for
> aio dsync writes this is not useful anyway. For aio dsync case, we
> we queue the request and return -EIOCBQUEUED. Now, since IOMAP_DIO_NOSYNC
> doesn't let iomap_dio_complete() to call generic_write_sync(),
> hence we may lose the sync write.
>
> Hence kill this flag as it is not in use by any FS now.
>
> Tested-by: Disha Goel <disgoel@xxxxxxxxxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx>
Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
--D
> ---
> fs/iomap/direct-io.c | 2 +-
> include/linux/iomap.h | 6 ------
> 2 files changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
> index f771001574d0..36ab1152dbea 100644
> --- a/fs/iomap/direct-io.c
> +++ b/fs/iomap/direct-io.c
> @@ -541,7 +541,7 @@ __iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
> }
>
> /* for data sync or sync, we need sync completion processing */
> - if (iocb_is_dsync(iocb) && !(dio_flags & IOMAP_DIO_NOSYNC)) {
> + if (iocb_is_dsync(iocb)) {
> dio->flags |= IOMAP_DIO_NEED_SYNC;
>
> /*
> diff --git a/include/linux/iomap.h b/include/linux/iomap.h
> index 0f8123504e5e..e2b836c2e119 100644
> --- a/include/linux/iomap.h
> +++ b/include/linux/iomap.h
> @@ -377,12 +377,6 @@ struct iomap_dio_ops {
> */
> #define IOMAP_DIO_PARTIAL (1 << 2)
>
> -/*
> - * The caller will sync the write if needed; do not sync it within
> - * iomap_dio_rw. Overrides IOMAP_DIO_FORCE_WAIT.
> - */
> -#define IOMAP_DIO_NOSYNC (1 << 3)
> -
> ssize_t iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
> const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
> unsigned int dio_flags, void *private, size_t done_before);
> --
> 2.39.2
>
