From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Allison Collins <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v6 11/16] xfs: Check for -ENOATTR or -EEXIST
Date: Tue, 21 Jan 2020 15:15:30 -0800 [thread overview]
Message-ID: <20200121231530.GK8247@magnolia> (raw)
In-Reply-To: <20200118225035.19503-12-allison.henderson@oracle.com>
On Sat, Jan 18, 2020 at 03:50:30PM -0700, Allison Collins wrote:
> Delayed operations cannot return error codes. So we must check for
> these conditions first before starting set or remove operations
Answering my own question from earlier -- I see here you actually /are/
checking the attr existence w.r.t. ATTR_{CREATE,REPLACE} right after we
allocate a transaction and ILOCK the inode, so
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Though I am wondering if you could discard the predicates from the
second patch in favor of doing a normal lookup of the attr with a zero
valuelen to determine if there's already an attribute?
--D
> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> ---
> fs/xfs/libxfs/xfs_attr.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index a2673fe..e9d22c1 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -457,6 +457,14 @@ xfs_attr_set(
> goto out_trans_cancel;
>
> xfs_trans_ijoin(args.trans, dp, 0);
> +
> + error = xfs_has_attr(&args);
> + if (error == -EEXIST && (name->type & ATTR_CREATE))
> + goto out_trans_cancel;
> +
> + if (error == -ENOATTR && (name->type & ATTR_REPLACE))
> + goto out_trans_cancel;
> +
> error = xfs_attr_set_args(&args);
> if (error)
> goto out_trans_cancel;
> @@ -545,6 +553,10 @@ xfs_attr_remove(
> */
> xfs_trans_ijoin(args.trans, dp, 0);
>
> + error = xfs_has_attr(&args);
> + if (error != -EEXIST)
> + goto out;
> +
> error = xfs_attr_remove_args(&args);
> if (error)
> goto out;
> --
> 2.7.4
>
next prev parent reply other threads:[~2020-01-21 23:15 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-18 22:50 [PATCH v6 00/16] xfs: Delay Ready Attributes Allison Collins
2020-01-18 22:50 ` [PATCH v6 01/16] xfs: Replace attribute parameters with struct xfs_name Allison Collins
2020-01-21 22:08 ` Darrick J. Wong
2020-01-18 22:50 ` [PATCH v6 02/16] xfs: Embed struct xfs_name in xfs_da_args Allison Collins
2020-01-21 22:15 ` Darrick J. Wong
2020-01-18 22:50 ` [PATCH v6 03/16] xfs: Add xfs_has_attr and subroutines Allison Collins
2020-01-21 22:48 ` Darrick J. Wong
2020-01-22 3:17 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 04/16] xfs: Factor out new helper functions xfs_attr_rmtval_set Allison Collins
2020-01-18 22:50 ` [PATCH v6 05/16] xfs: Factor out trans handling in xfs_attr3_leaf_flipflags Allison Collins
2020-01-18 22:50 ` [PATCH v6 06/16] xfs: Factor out xfs_attr_leaf_addname helper Allison Collins
2020-01-21 23:01 ` Darrick J. Wong
2020-01-22 4:15 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 07/16] xfs: Refactor xfs_attr_try_sf_addname Allison Collins
2020-01-21 23:07 ` Darrick J. Wong
2020-01-22 4:17 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 08/16] xfs: Factor out trans roll from xfs_attr3_leaf_setflag Allison Collins
2020-01-18 22:50 ` [PATCH v6 09/16] xfs: Factor out xfs_attr_rmtval_invalidate Allison Collins
2020-01-18 22:50 ` [PATCH v6 10/16] xfs: Factor out trans roll in xfs_attr3_leaf_clearflag Allison Collins
2020-01-18 22:50 ` [PATCH v6 11/16] xfs: Check for -ENOATTR or -EEXIST Allison Collins
2020-01-21 23:15 ` Darrick J. Wong [this message]
2020-01-22 4:29 ` Allison Collins
2020-01-25 16:41 ` Allison Collins
2020-01-26 22:28 ` Darrick J. Wong
2020-01-27 0:20 ` Allison Collins
2020-01-30 22:58 ` Darrick J. Wong
2020-01-18 22:50 ` [PATCH v6 12/16] xfs: Add helper function xfs_attr_init_unmapstate Allison Collins
2020-01-21 23:21 ` Darrick J. Wong
2020-01-22 5:05 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 13/16] xfs: Add helper function xfs_attr_rmtval_unmap Allison Collins
2020-01-21 23:24 ` Darrick J. Wong
2020-01-22 5:23 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 14/16] xfs: Simplify xfs_attr_set_args Allison Collins
2020-01-21 23:31 ` Darrick J. Wong
2020-01-22 7:39 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 15/16] xfs: Add delay ready attr remove routines Allison Collins
2020-01-22 0:02 ` Darrick J. Wong
2020-01-22 9:32 ` Allison Collins
2020-01-18 22:50 ` [PATCH v6 16/16] xfs: Add delay ready attr set routines Allison Collins
2020-01-22 0:12 ` Darrick J. Wong
2020-01-22 10:30 ` Allison Collins
2020-02-05 23:07 ` Allison Collins
2020-01-22 16:57 ` Allison Collins
2020-01-22 17:04 ` Allison Collins
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