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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 14/25] xfs: Remove xfs_trans_roll in xfs_attr_node_removename
Date: Tue, 21 Jul 2020 16:38:30 -0700	[thread overview]
Message-ID: <20200721233830.GJ3151642@magnolia> (raw)
In-Reply-To: <20200721001606.10781-15-allison.henderson@oracle.com>

On Mon, Jul 20, 2020 at 05:15:55PM -0700, Allison Collins wrote:
> A transaction roll is not necessary immediately after setting the
> INCOMPLETE flag when removing a node xattr entry with remote value
> blocks. The remote block invalidation that immediately follows setting
> the flag is an in-core only change. The next step after that is to start
> unmapping the remote blocks from the attr fork, but the xattr remove
> transaction reservation includes reservation for full tree splits of the
> dabtree and bmap tree. The remote block unmap code will roll the
> transaction as extents are unmapped and freed.
> 
> Signed-off-by: Allison Collins <allison.henderson@oracle.com>
> Reviewed-by: Brian Foster <bfoster@redhat.com>

Urrrk.  The analysis is correct here, but whoooee was it hard to find.

Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/libxfs/xfs_attr.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index 1a78023..f1becca 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -1148,10 +1148,6 @@ xfs_attr_node_removename(
>  		if (error)
>  			goto out;
>  
> -		error = xfs_trans_roll_inode(&args->trans, args->dp);
> -		if (error)
> -			goto out;
> -
>  		error = xfs_attr_rmtval_invalidate(args);
>  		if (error)
>  			return error;
> -- 
> 2.7.4
> 

  reply	other threads:[~2020-07-22  0:29 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 [this message]
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
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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