From: Brian Foster <bfoster@redhat.com>
To: Allison Collins <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v5 07/14] xfs: Factor out xfs_attr_leaf_addname helper
Date: Fri, 13 Dec 2019 09:15:15 -0500 [thread overview]
Message-ID: <20191213141515.GD43376@bfoster> (raw)
In-Reply-To: <20191212041513.13855-8-allison.henderson@oracle.com>
On Wed, Dec 11, 2019 at 09:15:06PM -0700, Allison Collins wrote:
> Factor out new helper function xfs_attr_leaf_try_add.
> Because new delayed attribute routines cannot roll
> transactions, we carve off the parts of
> xfs_attr_leaf_addname that we can use. This will help
> to reduce repetitive code later when we introduce
> delayed attributes.
>
> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> ---
> fs/xfs/libxfs/xfs_attr.c | 83 ++++++++++++++++++++++++++++--------------------
> 1 file changed, 49 insertions(+), 34 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index ee973d2..36f6a43 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -305,10 +305,30 @@ xfs_attr_set_args(
> }
> }
>
> - if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
> + if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
> error = xfs_attr_leaf_addname(args);
> - else
> - error = xfs_attr_node_addname(args);
> + if (error == 0 || error != -ENOSPC)
> + return 0;
No need to check for 0 since 0 != -ENOSPC. We also probably want to
return error instead of zero. With that fixed up:
Reviewed-by: Brian Foster <bfoster@redhat.com>
> +
> + /*
> + * Commit that transaction so that the node_addname()
> + * call can manage its own transactions.
> + */
> + error = xfs_defer_finish(&args->trans);
> + if (error)
> + return error;
> +
> + /*
> + * Commit the current trans (including the inode) and
> + * start a new one.
> + */
> + error = xfs_trans_roll_inode(&args->trans, dp);
> + if (error)
> + return error;
> +
> + }
> +
> + error = xfs_attr_node_addname(args);
> return error;
> }
>
> @@ -606,21 +626,12 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
> * External routines when attribute list is one block
> *========================================================================*/
>
> -/*
> - * Add a name to the leaf attribute list structure
> - *
> - * This leaf block cannot have a "remote" value, we only call this routine
> - * if bmap_one_block() says there is only one block (ie: no remote blks).
> - */
> STATIC int
> -xfs_attr_leaf_addname(
> - struct xfs_da_args *args)
> +xfs_attr_leaf_try_add(
> + struct xfs_da_args *args,
> + struct xfs_buf *bp)
> {
> - struct xfs_buf *bp;
> - int retval, error, forkoff;
> - struct xfs_inode *dp = args->dp;
> -
> - trace_xfs_attr_leaf_addname(args);
> + int retval, error;
>
> /*
> * Look up the given attribute in the leaf block. Figure out if
> @@ -666,31 +677,35 @@ xfs_attr_leaf_addname(
> retval = xfs_attr3_leaf_add(bp, args);
> if (retval == -ENOSPC) {
> /*
> - * Promote the attribute list to the Btree format, then
> - * Commit that transaction so that the node_addname() call
> - * can manage its own transactions.
> + * Promote the attribute list to the Btree format.
> + * Unless an error occurs, retain the -ENOSPC retval
> */
> error = xfs_attr3_leaf_to_node(args);
> if (error)
> return error;
> - error = xfs_defer_finish(&args->trans);
> - if (error)
> - return error;
> + }
> + return retval;
> +}
>
> - /*
> - * Commit the current trans (including the inode) and start
> - * a new one.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - return error;
>
> - /*
> - * Fob the whole rest of the problem off on the Btree code.
> - */
> - error = xfs_attr_node_addname(args);
> +/*
> + * Add a name to the leaf attribute list structure
> + *
> + * This leaf block cannot have a "remote" value, we only call this routine
> + * if bmap_one_block() says there is only one block (ie: no remote blks).
> + */
> +STATIC int
> +xfs_attr_leaf_addname(struct xfs_da_args *args)
> +{
> + int error, forkoff;
> + struct xfs_buf *bp = NULL;
> + struct xfs_inode *dp = args->dp;
> +
> + trace_xfs_attr_leaf_addname(args);
> +
> + error = xfs_attr_leaf_try_add(args, bp);
> + if (error)
> return error;
> - }
>
> /*
> * Commit the transaction that added the attr name so that
> --
> 2.7.4
>
next prev parent reply other threads:[~2019-12-13 20:37 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 4:14 [PATCH v5 00/14] xfs: Delay Ready Attributes Allison Collins
2019-12-12 4:15 ` [PATCH v5 01/14] xfs: Remove all strlen in all xfs_attr_* functions for attr names Allison Collins
2019-12-12 4:15 ` [PATCH v5 02/14] xfs: Replace attribute parameters with struct xfs_name Allison Collins
2019-12-13 13:07 ` Brian Foster
2019-12-14 6:57 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 03/14] xfs: Embed struct xfs_name in xfs_da_args Allison Collins
2019-12-12 4:15 ` [PATCH v5 04/14] xfs: Add xfs_has_attr and subroutines Allison Collins
2019-12-13 13:08 ` Brian Foster
2019-12-14 6:58 ` Allison Collins
2019-12-24 12:18 ` Christoph Hellwig
2019-12-25 4:21 ` Allison Collins
2020-01-21 22:30 ` Darrick J. Wong
2020-01-22 0:25 ` Allison Collins
2020-01-25 16:27 ` Allison Collins
2020-01-25 23:08 ` Christoph Hellwig
2020-01-26 4:03 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 05/14] xfs: Factor out new helper functions xfs_attr_rmtval_set Allison Collins
2019-12-24 12:14 ` Christoph Hellwig
2019-12-25 17:43 ` Allison Collins
2020-01-06 14:46 ` Brian Foster
2020-01-06 18:29 ` Allison Collins
2020-01-06 21:45 ` Darrick J. Wong
2020-01-06 23:33 ` Dave Chinner
2019-12-12 4:15 ` [PATCH v5 06/14] xfs: Factor up trans handling in xfs_attr3_leaf_flipflags Allison Collins
2019-12-24 12:16 ` Christoph Hellwig
2019-12-25 20:49 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 07/14] xfs: Factor out xfs_attr_leaf_addname helper Allison Collins
2019-12-13 14:15 ` Brian Foster [this message]
2019-12-14 6:58 ` Allison Collins
2019-12-24 12:22 ` Christoph Hellwig
2019-12-26 17:04 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 08/14] xfs: Factor up xfs_attr_try_sf_addname Allison Collins
2019-12-13 14:15 ` Brian Foster
2019-12-14 6:58 ` Allison Collins
2019-12-24 12:25 ` Christoph Hellwig
2019-12-27 3:23 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 09/14] xfs: Factor up trans roll from xfs_attr3_leaf_setflag Allison Collins
2019-12-24 12:26 ` Christoph Hellwig
2019-12-12 4:15 ` [PATCH v5 10/14] xfs: Factor out xfs_attr_rmtval_invalidate Allison Collins
2019-12-12 4:15 ` [PATCH v5 11/14] xfs: Factor up trans roll in xfs_attr3_leaf_clearflag Allison Collins
2019-12-24 12:28 ` Christoph Hellwig
2019-12-12 4:15 ` [PATCH v5 12/14] xfs: Check for -ENOATTR or -EEXIST Allison Collins
2019-12-13 14:16 ` Brian Foster
2019-12-14 7:56 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 13/14] xfs: Add delay ready attr remove routines Allison Collins
2019-12-13 17:30 ` Brian Foster
2019-12-14 19:21 ` Allison Collins
2019-12-24 12:30 ` Christoph Hellwig
2019-12-24 23:18 ` Allison Collins
2019-12-12 4:15 ` [PATCH v5 14/14] xfs: Add delay ready attr set routines Allison Collins
2019-12-24 12:02 ` [PATCH v5 00/14] xfs: Delay Ready Attributes Christoph Hellwig
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