Re: [PATCH v7 10/19] xfs: Factor out xfs_attr_rmtval_invalidate

Chandan Rajendra
2020-02-28T13:12:43Z

On Sunday, February 23, 2020 7:36 AM Allison Collins wrote:
> Because new delayed attribute routines cannot roll transactions, we carve off the
> parts of xfs_attr_rmtval_remove that we can use. This will help to reduce
> repetitive code later when we introduce delayed attributes.
>

I don't see any logical errors.

Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>

> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> Reviewed-by: Brian Foster <bfoster@redhat.com>
> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
> ---
> fs/xfs/libxfs/xfs_attr_remote.c | 26 +++++++++++++++++++++-----
> fs/xfs/libxfs/xfs_attr_remote.h | 2 +-
> 2 files changed, 22 insertions(+), 6 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_attr_remote.c b/fs/xfs/libxfs/xfs_attr_remote.c
> index d1eee24..3de2eec 100644
> --- a/fs/xfs/libxfs/xfs_attr_remote.c
> +++ b/fs/xfs/libxfs/xfs_attr_remote.c
> @@ -634,15 +634,12 @@ xfs_attr_rmtval_set(
> * out-of-line buffer that it is stored on.
> */
> int
> -xfs_attr_rmtval_remove(
> +xfs_attr_rmtval_invalidate(
> struct xfs_da_args *args)
> {
> xfs_dablk_t lblkno;
> int blkcnt;
> int error;
> - int done;
> -
> - trace_xfs_attr_rmtval_remove(args);
>
> /*
> * Roll through the "value", invalidating the attribute value's blocks.
> @@ -670,13 +667,32 @@ xfs_attr_rmtval_remove(
> lblkno += map.br_blockcount;
> blkcnt -= map.br_blockcount;
> }
> + return 0;
> +}
>
> +/*
> + * Remove the value associated with an attribute by deleting the
> + * out-of-line buffer that it is stored on.
> + */
> +int
> +xfs_attr_rmtval_remove(
> + struct xfs_da_args *args)
> +{
> + xfs_dablk_t lblkno;
> + int blkcnt;
> + int error = 0;
> + int done = 0;
> +
> + trace_xfs_attr_rmtval_remove(args);
> +
> + error = xfs_attr_rmtval_invalidate(args);
> + if (error)
> + return error;
> /*
> * Keep de-allocating extents until the remote-value region is gone.
> */
> lblkno = args->rmtblkno;
> blkcnt = args->rmtblkcnt;
> - done = 0;
> while (!done) {
> error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt,
> XFS_BMAPI_ATTRFORK, 1, &done);
> diff --git a/fs/xfs/libxfs/xfs_attr_remote.h b/fs/xfs/libxfs/xfs_attr_remote.h
> index 6fb4572..eff5f95 100644
> --- a/fs/xfs/libxfs/xfs_attr_remote.h
> +++ b/fs/xfs/libxfs/xfs_attr_remote.h
> @@ -13,5 +13,5 @@ int xfs_attr_rmtval_set(struct xfs_da_args *args);
> int xfs_attr_rmtval_remove(struct xfs_da_args *args);
> int xfs_attr_rmtval_stale(struct xfs_inode *ip, struct xfs_bmbt_irec *map,
> xfs_buf_flags_t incore_flags);
> -
> +int xfs_attr_rmtval_invalidate(struct xfs_da_args *args);
> #endif /* __XFS_ATTR_REMOTE_H__ */
>

--
chandan