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From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Brian Foster <bfoster@redhat.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 03/25] xfs: use ->t_firstblock in dir ops
Date: Tue, 3 Jul 2018 17:42:23 -0700	[thread overview]
Message-ID: <20180704004223.GD32415@magnolia> (raw)
In-Reply-To: <20180703172319.24509-4-bfoster@redhat.com>

On Tue, Jul 03, 2018 at 01:22:57PM -0400, Brian Foster wrote:
> Callers of the xfs_dir_*() functions currently pass an on-stack
> firstblock variable. While the dirops infrastructure carries a
> pointer to this variable, it never rolls the transaction and so it
> is safe to use ->t_firstblock instead.
> 
> Fix up the various xfs_dir_*() callers to use ->t_firstblock. Also
> remove the unnecessary parameter for xfs_cross_rename().
> 
> Signed-off-by: Brian Foster <bfoster@redhat.com>

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

--D

> ---
>  fs/xfs/xfs_inode.c   | 42 +++++++++++++++++++-----------------------
>  fs/xfs/xfs_symlink.c |  9 ++++-----
>  2 files changed, 23 insertions(+), 28 deletions(-)
> 
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 04e17234e5d7..6a3fe2d3df6c 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -1143,7 +1143,6 @@ xfs_create(
>  	struct xfs_trans	*tp = NULL;
>  	int			error;
>  	struct xfs_defer_ops	dfops;
> -	xfs_fsblock_t		first_block;
>  	bool                    unlock_dp_on_error = false;
>  	prid_t			prid;
>  	struct xfs_dquot	*udqp = NULL;
> @@ -1195,7 +1194,7 @@ xfs_create(
>  	xfs_ilock(dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
>  	unlock_dp_on_error = true;
>  
> -	xfs_defer_init(tp, &dfops, &first_block);
> +	xfs_defer_init(tp, &dfops, &tp->t_firstblock);
>  
>  	/*
>  	 * Reserve disk quota and the inode.
> @@ -1224,7 +1223,7 @@ xfs_create(
>  	xfs_trans_ijoin(tp, dp, XFS_ILOCK_EXCL);
>  	unlock_dp_on_error = false;
>  
> -	error = xfs_dir_createname(tp, dp, name, ip->i_ino, &first_block,
> +	error = xfs_dir_createname(tp, dp, name, ip->i_ino, &tp->t_firstblock,
>  				   resblks ?
>  					resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
>  	if (error) {
> @@ -1401,7 +1400,6 @@ xfs_link(
>  	xfs_trans_t		*tp;
>  	int			error;
>  	struct xfs_defer_ops	dfops;
> -	xfs_fsblock_t           first_block;
>  	int			resblks;
>  
>  	trace_xfs_link(tdp, target_name);
> @@ -1450,7 +1448,7 @@ xfs_link(
>  			goto error_return;
>  	}
>  
> -	xfs_defer_init(tp, &dfops, &first_block);
> +	xfs_defer_init(tp, &dfops, &tp->t_firstblock);
>  
>  	/*
>  	 * Handle initial link state of O_TMPFILE inode
> @@ -1462,7 +1460,7 @@ xfs_link(
>  	}
>  
>  	error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
> -				   &first_block, resblks);
> +				   &tp->t_firstblock, resblks);
>  	if (error)
>  		goto error_return;
>  	xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
> @@ -2577,7 +2575,6 @@ xfs_remove(
>  	int			is_dir = S_ISDIR(VFS_I(ip)->i_mode);
>  	int                     error = 0;
>  	struct xfs_defer_ops	dfops;
> -	xfs_fsblock_t           first_block;
>  	uint			resblks;
>  
>  	trace_xfs_remove(dp, name);
> @@ -2657,8 +2654,8 @@ xfs_remove(
>  	if (error)
>  		goto out_trans_cancel;
>  
> -	xfs_defer_init(tp, &dfops, &first_block);
> -	error = xfs_dir_removename(tp, dp, name, ip->i_ino, &first_block,
> +	xfs_defer_init(tp, &dfops, &tp->t_firstblock);
> +	error = xfs_dir_removename(tp, dp, name, ip->i_ino, &tp->t_firstblock,
>  				   resblks);
>  	if (error) {
>  		ASSERT(error != -ENOENT);
> @@ -2783,7 +2780,6 @@ xfs_cross_rename(
>  	struct xfs_inode	*dp2,
>  	struct xfs_name		*name2,
>  	struct xfs_inode	*ip2,
> -	xfs_fsblock_t		*first_block,
>  	int			spaceres)
>  {
>  	int		error = 0;
> @@ -2792,13 +2788,13 @@ xfs_cross_rename(
>  	int		dp2_flags = 0;
>  
>  	/* Swap inode number for dirent in first parent */
> -	error = xfs_dir_replace(tp, dp1, name1, ip2->i_ino, first_block,
> +	error = xfs_dir_replace(tp, dp1, name1, ip2->i_ino, &tp->t_firstblock,
>  				spaceres);
>  	if (error)
>  		goto out_trans_abort;
>  
>  	/* Swap inode number for dirent in second parent */
> -	error = xfs_dir_replace(tp, dp2, name2, ip1->i_ino, first_block,
> +	error = xfs_dir_replace(tp, dp2, name2, ip1->i_ino, &tp->t_firstblock,
>  				spaceres);
>  	if (error)
>  		goto out_trans_abort;
> @@ -2813,7 +2809,7 @@ xfs_cross_rename(
>  
>  		if (S_ISDIR(VFS_I(ip2)->i_mode)) {
>  			error = xfs_dir_replace(tp, ip2, &xfs_name_dotdot,
> -						dp1->i_ino, first_block,
> +						dp1->i_ino, &tp->t_firstblock,
>  						spaceres);
>  			if (error)
>  				goto out_trans_abort;
> @@ -2840,7 +2836,7 @@ xfs_cross_rename(
>  
>  		if (S_ISDIR(VFS_I(ip1)->i_mode)) {
>  			error = xfs_dir_replace(tp, ip1, &xfs_name_dotdot,
> -						dp2->i_ino, first_block,
> +						dp2->i_ino, &tp->t_firstblock,
>  						spaceres);
>  			if (error)
>  				goto out_trans_abort;
> @@ -2939,7 +2935,6 @@ xfs_rename(
>  	struct xfs_mount	*mp = src_dp->i_mount;
>  	struct xfs_trans	*tp;
>  	struct xfs_defer_ops	dfops;
> -	xfs_fsblock_t		first_block;
>  	struct xfs_inode	*wip = NULL;		/* whiteout inode */
>  	struct xfs_inode	*inodes[__XFS_SORT_INODES];
>  	int			num_inodes = __XFS_SORT_INODES;
> @@ -3021,13 +3016,13 @@ xfs_rename(
>  		goto out_trans_cancel;
>  	}
>  
> -	xfs_defer_init(tp, &dfops, &first_block);
> +	xfs_defer_init(tp, &dfops, &tp->t_firstblock);
>  
>  	/* RENAME_EXCHANGE is unique from here on. */
>  	if (flags & RENAME_EXCHANGE)
>  		return xfs_cross_rename(tp, src_dp, src_name, src_ip,
>  					target_dp, target_name, target_ip,
> -					&first_block, spaceres);
> +					spaceres);
>  
>  	/*
>  	 * Set up the target.
> @@ -3048,8 +3043,8 @@ xfs_rename(
>  		 * to account for the ".." reference from the new entry.
>  		 */
>  		error = xfs_dir_createname(tp, target_dp, target_name,
> -						src_ip->i_ino, &first_block,
> -						spaceres);
> +					   src_ip->i_ino, &tp->t_firstblock,
> +					   spaceres);
>  		if (error)
>  			goto out_bmap_cancel;
>  
> @@ -3088,7 +3083,8 @@ xfs_rename(
>  		 * name at the destination directory, remove it first.
>  		 */
>  		error = xfs_dir_replace(tp, target_dp, target_name,
> -					src_ip->i_ino, &first_block, spaceres);
> +					src_ip->i_ino, &tp->t_firstblock,
> +					spaceres);
>  		if (error)
>  			goto out_bmap_cancel;
>  
> @@ -3122,7 +3118,7 @@ xfs_rename(
>  		 * directory.
>  		 */
>  		error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot,
> -					target_dp->i_ino, &first_block,
> +					target_dp->i_ino, &tp->t_firstblock,
>  					spaceres);
>  		ASSERT(error != -EEXIST);
>  		if (error)
> @@ -3162,10 +3158,10 @@ xfs_rename(
>  	 */
>  	if (wip) {
>  		error = xfs_dir_replace(tp, src_dp, src_name, wip->i_ino,
> -					&first_block, spaceres);
> +					&tp->t_firstblock, spaceres);
>  	} else
>  		error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
> -					   &first_block, spaceres);
> +					   &tp->t_firstblock, spaceres);
>  	if (error)
>  		goto out_bmap_cancel;
>  
> diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
> index e50e97308f81..8ddc7f1147dc 100644
> --- a/fs/xfs/xfs_symlink.c
> +++ b/fs/xfs/xfs_symlink.c
> @@ -164,7 +164,6 @@ xfs_symlink(
>  	int			error = 0;
>  	int			pathlen;
>  	struct xfs_defer_ops	dfops;
> -	xfs_fsblock_t		first_block;
>  	bool                    unlock_dp_on_error = false;
>  	xfs_fileoff_t		first_fsb;
>  	xfs_filblks_t		fs_blocks;
> @@ -246,7 +245,7 @@ xfs_symlink(
>  	 * Initialize the bmap freelist prior to calling either
>  	 * bmapi or the directory create code.
>  	 */
> -	xfs_defer_init(tp, &dfops, &first_block);
> +	xfs_defer_init(tp, &dfops, &tp->t_firstblock);
>  
>  	/*
>  	 * Allocate an inode for the symlink.
> @@ -289,8 +288,8 @@ xfs_symlink(
>  		nmaps = XFS_SYMLINK_MAPS;
>  
>  		error = xfs_bmapi_write(tp, ip, first_fsb, fs_blocks,
> -				  XFS_BMAPI_METADATA, &first_block, resblks,
> -				  mval, &nmaps);
> +				  XFS_BMAPI_METADATA, &tp->t_firstblock,
> +				  resblks, mval, &nmaps);
>  		if (error)
>  			goto out_bmap_cancel;
>  
> @@ -338,7 +337,7 @@ xfs_symlink(
>  	 * Create the directory entry for the symlink.
>  	 */
>  	error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
> -				   &first_block, resblks);
> +				   &tp->t_firstblock, resblks);
>  	if (error)
>  		goto out_bmap_cancel;
>  	xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
> -- 
> 2.17.1
> 
> --
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  reply	other threads:[~2018-07-04  0:42 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-03 17:22 [PATCH 00/25] xfs: embed firstblock in xfs_trans Brian Foster
2018-07-03 17:22 ` [PATCH 01/25] xfs: allow null firstblock in xfs_bmapi_write() when tp is null Brian Foster
2018-07-04  0:24   ` Darrick J. Wong
2018-07-08 15:26   ` Christoph Hellwig
2018-07-03 17:22 ` [PATCH 02/25] xfs: add firstblock field to xfs_trans Brian Foster
2018-07-04  0:41   ` Darrick J. Wong
2018-07-08 15:26   ` Christoph Hellwig
2018-07-03 17:22 ` [PATCH 03/25] xfs: use ->t_firstblock in dir ops Brian Foster
2018-07-04  0:42   ` Darrick J. Wong [this message]
2018-07-03 17:22 ` [PATCH 04/25] xfs: remove firstblock param from xfs " Brian Foster
2018-07-03 18:06   ` Darrick J. Wong
2018-07-03 18:15     ` Brian Foster
2018-07-03 17:22 ` [PATCH 05/25] xfs: use ->t_firstblock in attrfork add Brian Foster
2018-07-04  0:43   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 06/25] xfs: use ->t_firstblock in xattr ops Brian Foster
2018-07-04  0:45   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 07/25] xfs: use ->t_firstblock for all xfs_bmapi_write() callers Brian Foster
2018-07-04  0:47   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 08/25] xfs: use ->t_firstblock for all xfs_bunmapi() callers Brian Foster
2018-07-04  0:47   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 09/25] xfs: use ->t_firstblock in xfs_bmapi_remap() Brian Foster
2018-07-04  0:47   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 10/25] xfs: use ->t_firstblock in insert/collapse range Brian Foster
2018-07-04  0:48   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 11/25] xfs: remove xfs_bmapi_write() firstblock param Brian Foster
2018-07-04  0:50   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 12/25] xfs: remove xfs_bunmapi() " Brian Foster
2018-07-04  0:51   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 13/25] xfs: remove bmap insert/collapse " Brian Foster
2018-07-04  0:51   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 14/25] xfs: use ->t_firstblock in bmap extent split Brian Foster
2018-07-04  0:51   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 15/25] xfs: remove xfs_bmalloca firstblock field Brian Foster
2018-07-04  0:52   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 16/25] xfs: remove bmap extent add helper firstblock params Brian Foster
2018-07-04  0:52   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 17/25] xfs: remove bmap format helpers " Brian Foster
2018-07-04  0:53   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 18/25] xfs: remove xfs_btree_cur private firstblock field Brian Foster
2018-07-04  0:54   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 19/25] xfs: remove xfs_alloc_arg " Brian Foster
2018-07-04  0:54   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 20/25] xfs: use ->t_firstblock in dq alloc Brian Foster
2018-07-04  0:54   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 21/25] xfs: replace no-op firstblock init with ->t_firstblock Brian Foster
2018-07-04  0:54   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 22/25] xfs: use ->t_firstblock in reflink cow block cancel Brian Foster
2018-07-04  0:55   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 23/25] xfs: use ->t_firstblock in extent swap Brian Foster
2018-07-04  0:55   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 24/25] xfs: use ->t_firstblock in inode inactivate Brian Foster
2018-07-04  0:55   ` Darrick J. Wong
2018-07-03 17:23 ` [PATCH 25/25] xfs: remove xfs_defer_init() firstblock param Brian Foster
2018-07-04  1:27   ` Darrick J. Wong
2018-07-08 15:37     ` Christoph Hellwig
2018-07-08 16:34       ` Darrick J. Wong
2018-07-10  1:07       ` Brian Foster
2018-07-10  7:11 ` [PATCH 00/25] xfs: embed firstblock in xfs_trans Christoph Hellwig

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