From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Allison Collins <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v11 21/25] xfs: Simplify xfs_attr_node_addname
Date: Tue, 21 Jul 2020 16:41:03 -0700 [thread overview]
Message-ID: <20200721234103.GL3151642@magnolia> (raw)
In-Reply-To: <20200721001606.10781-22-allison.henderson@oracle.com>
On Mon, Jul 20, 2020 at 05:16:02PM -0700, Allison Collins wrote:
> Invert the rename logic in xfs_attr_node_addname to simplify the
> delayed attr logic later.
>
> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> Reviewed-by: Brian Foster <bfoster@redhat.com>
Looks ok, diff is dumb :(
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
--D
> ---
> fs/xfs/libxfs/xfs_attr.c | 125 +++++++++++++++++++++++------------------------
> 1 file changed, 61 insertions(+), 64 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index ca1e851..e618b09 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -1030,80 +1030,77 @@ xfs_attr_node_addname(
> return error;
> }
>
> - /*
> - * If this is an atomic rename operation, we must "flip" the
> - * incomplete flags on the "new" and "old" attribute/value pairs
> - * so that one disappears and one appears atomically. Then we
> - * must remove the "old" attribute/value pair.
> - */
> - if (args->op_flags & XFS_DA_OP_RENAME) {
> - /*
> - * In a separate transaction, set the incomplete flag on the
> - * "old" attr and clear the incomplete flag on the "new" attr.
> - */
> - error = xfs_attr3_leaf_flipflags(args);
> - if (error)
> - goto out;
> + if (!(args->op_flags & XFS_DA_OP_RENAME)) {
> /*
> - * Commit the flag value change and start the next trans in
> - * series
> + * Added a "remote" value, just clear the incomplete flag.
> */
> - error = xfs_trans_roll_inode(&args->trans, args->dp);
> - if (error)
> - goto out;
> + if (args->rmtblkno > 0)
> + error = xfs_attr3_leaf_clearflag(args);
> + retval = error;
> + goto out;
> + }
>
> - /*
> - * Dismantle the "old" attribute/value pair by removing
> - * a "remote" value (if it exists).
> - */
> - xfs_attr_restore_rmt_blk(args);
> + /*
> + * If this is an atomic rename operation, we must "flip" the incomplete
> + * flags on the "new" and "old" attribute/value pairs so that one
> + * disappears and one appears atomically. Then we must remove the "old"
> + * attribute/value pair.
> + *
> + * In a separate transaction, set the incomplete flag on the "old" attr
> + * and clear the incomplete flag on the "new" attr.
> + */
> + error = xfs_attr3_leaf_flipflags(args);
> + if (error)
> + goto out;
> + /*
> + * Commit the flag value change and start the next trans in series
> + */
> + error = xfs_trans_roll_inode(&args->trans, args->dp);
> + if (error)
> + goto out;
>
> - if (args->rmtblkno) {
> - error = xfs_attr_rmtval_invalidate(args);
> - if (error)
> - return error;
> + /*
> + * Dismantle the "old" attribute/value pair by removing a "remote" value
> + * (if it exists).
> + */
> + xfs_attr_restore_rmt_blk(args);
>
> - error = xfs_attr_rmtval_remove(args);
> - if (error)
> - return error;
> - }
> + if (args->rmtblkno) {
> + error = xfs_attr_rmtval_invalidate(args);
> + if (error)
> + return error;
>
> - /*
> - * Re-find the "old" attribute entry after any split ops.
> - * The INCOMPLETE flag means that we will find the "old"
> - * attr, not the "new" one.
> - */
> - args->attr_filter |= XFS_ATTR_INCOMPLETE;
> - state = xfs_da_state_alloc();
> - state->args = args;
> - state->mp = mp;
> - state->inleaf = 0;
> - error = xfs_da3_node_lookup_int(state, &retval);
> + error = xfs_attr_rmtval_remove(args);
> if (error)
> - goto out;
> + return error;
> + }
>
> - /*
> - * Remove the name and update the hashvals in the tree.
> - */
> - blk = &state->path.blk[ state->path.active-1 ];
> - ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
> - error = xfs_attr3_leaf_remove(blk->bp, args);
> - xfs_da3_fixhashpath(state, &state->path);
> + /*
> + * Re-find the "old" attribute entry after any split ops. The INCOMPLETE
> + * flag means that we will find the "old" attr, not the "new" one.
> + */
> + args->attr_filter |= XFS_ATTR_INCOMPLETE;
> + state = xfs_da_state_alloc();
> + state->args = args;
> + state->mp = mp;
> + state->inleaf = 0;
> + error = xfs_da3_node_lookup_int(state, &retval);
> + if (error)
> + goto out;
>
> - /*
> - * Check to see if the tree needs to be collapsed.
> - */
> - if (retval && (state->path.active > 1)) {
> - error = xfs_da3_join(state);
> - if (error)
> - goto out;
> - }
> + /*
> + * Remove the name and update the hashvals in the tree.
> + */
> + blk = &state->path.blk[state->path.active-1];
> + ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC);
> + error = xfs_attr3_leaf_remove(blk->bp, args);
> + xfs_da3_fixhashpath(state, &state->path);
>
> - } else if (args->rmtblkno > 0) {
> - /*
> - * Added a "remote" value, just clear the incomplete flag.
> - */
> - error = xfs_attr3_leaf_clearflag(args);
> + /*
> + * Check to see if the tree needs to be collapsed.
> + */
> + if (retval && (state->path.active > 1)) {
> + error = xfs_da3_join(state);
> if (error)
> goto out;
> }
> --
> 2.7.4
>
next prev parent reply other threads:[~2020-07-21 23:41 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 0:15 [PATCH v11 00/25] xfs: Delay Ready Attributes Allison Collins
2020-07-21 0:15 ` [PATCH v11 01/25] xfs: Add xfs_has_attr and subroutines Allison Collins
2020-07-21 23:26 ` Darrick J. Wong
2020-07-24 2:24 ` Dave Chinner
2020-07-25 2:49 ` Allison Collins
2020-07-21 0:15 ` [PATCH v11 02/25] xfs: Check for -ENOATTR or -EEXIST Allison Collins
2020-07-21 0:15 ` [PATCH v11 03/25] xfs: Factor out new helper functions xfs_attr_rmtval_set Allison Collins
2020-07-21 0:15 ` [PATCH v11 04/25] xfs: Pull up trans handling in xfs_attr3_leaf_flipflags Allison Collins
2020-07-21 0:15 ` [PATCH v11 05/25] xfs: Split apart xfs_attr_leaf_addname Allison Collins
2020-07-21 23:19 ` Darrick J. Wong
2020-07-25 0:07 ` Allison Collins
2020-07-21 0:15 ` [PATCH v11 06/25] xfs: Refactor xfs_attr_try_sf_addname Allison Collins
2020-07-21 0:15 ` [PATCH v11 07/25] xfs: Pull up trans roll from xfs_attr3_leaf_setflag Allison Collins
2020-07-21 0:15 ` [PATCH v11 08/25] xfs: Factor out xfs_attr_rmtval_invalidate Allison Collins
2020-07-21 0:15 ` [PATCH v11 09/25] xfs: Pull up trans roll in xfs_attr3_leaf_clearflag Allison Collins
2020-07-21 0:15 ` [PATCH v11 10/25] xfs: Refactor xfs_attr_rmtval_remove Allison Collins
2020-07-21 23:31 ` Darrick J. Wong
2020-07-22 0:24 ` Darrick J. Wong
2020-07-25 0:08 ` Allison Collins
2020-07-25 0:46 ` Darrick J. Wong
2020-07-25 0:07 ` Allison Collins
2020-07-21 0:15 ` [PATCH v11 11/25] xfs: Pull up xfs_attr_rmtval_invalidate Allison Collins
2020-07-21 0:15 ` [PATCH v11 12/25] xfs: Add helper function xfs_attr_node_shrink Allison Collins
2020-07-21 0:15 ` [PATCH v11 13/25] xfs: Remove unneeded xfs_trans_roll_inode calls Allison Collins
2020-07-21 23:34 ` Darrick J. Wong
2020-07-25 0:08 ` Allison Collins
2020-07-21 0:15 ` [PATCH v11 14/25] xfs: Remove xfs_trans_roll in xfs_attr_node_removename Allison Collins
2020-07-21 23:38 ` Darrick J. Wong
2020-07-25 0:08 ` Allison Collins
2020-07-21 0:15 ` [PATCH v11 15/25] xfs: Add helpers xfs_attr_is_shortform and xfs_attr_set_shortform Allison Collins
2020-07-21 0:15 ` [PATCH v11 16/25] xfs: Add helper function xfs_attr_leaf_mark_incomplete Allison Collins
2020-07-21 0:15 ` [PATCH v11 17/25] xfs: Add remote block helper functions Allison Collins
2020-07-21 0:15 ` [PATCH v11 18/25] xfs: Add helper function xfs_attr_node_removename_setup Allison Collins
2020-07-21 0:16 ` [PATCH v11 19/25] xfs: Add helper function xfs_attr_node_removename_rmt Allison Collins
2020-07-21 0:16 ` [PATCH v11 20/25] xfs: Simplify xfs_attr_leaf_addname Allison Collins
2020-07-21 23:39 ` Darrick J. Wong
2020-07-25 0:07 ` Allison Collins
2020-07-21 0:16 ` [PATCH v11 21/25] xfs: Simplify xfs_attr_node_addname Allison Collins
2020-07-21 23:41 ` Darrick J. Wong [this message]
2020-07-25 0:08 ` Allison Collins
2020-07-21 0:16 ` [PATCH v11 22/25] xfs: Lift -ENOSPC handler from xfs_attr_leaf_addname Allison Collins
2020-07-21 0:16 ` [PATCH v11 23/25] xfs: Add delay ready attr remove routines Allison Collins
2020-07-21 0:16 ` [PATCH v11 24/25] xfs: Add delay ready attr set routines Allison Collins
2020-07-21 0:16 ` [PATCH v11 25/25] xfs: Rename __xfs_attr_rmtval_remove Allison Collins
2020-07-24 3:41 ` [PATCH v11 00/25] xfs: Delay Ready Attributes Dave Chinner
2020-07-24 5:35 ` Dave Chinner
2020-07-25 2:50 ` Allison Collins
2020-07-25 2:49 ` Allison Collins
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