On Fri, Nov 17, 2017 at 11:21:34AM -0700, Allison Henderson wrote:
> From: Mark Tinguely <tinguely@xxxxxxx>
>
> Return the directory offset information when removing an entry to the
> directory.
>
> This offset will be used as the parent pointer offset in xfs_remove.
>
> [dchinner: forward ported and cleaned up]
> [achender: rebased, changed __unint32_t to xfs_dir2_dataptr_t]
>
> Signed-off-by: Mark Tinguely <tinguely@xxxxxxx>
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> ---
> v2: Changed typedefs to raw struct types
>
> Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> ---
> fs/xfs/libxfs/xfs_dir2.c | 15 +++++++++------
> fs/xfs/libxfs/xfs_dir2.h | 4 +++-
> fs/xfs/libxfs/xfs_dir2_block.c | 4 ++--
> fs/xfs/libxfs/xfs_dir2_leaf.c | 5 +++--
> fs/xfs/libxfs/xfs_dir2_node.c | 5 +++--
> fs/xfs/libxfs/xfs_dir2_sf.c | 2 ++
> fs/xfs/xfs_inode.c | 7 ++++---
> 7 files changed, 26 insertions(+), 16 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
> index a1ca460..b647bf2 100644
> --- a/fs/xfs/libxfs/xfs_dir2.c
> +++ b/fs/xfs/libxfs/xfs_dir2.c
> @@ -443,13 +443,14 @@ xfs_dir_lookup(
> */
> int
> xfs_dir_removename(
> - xfs_trans_t *tp,
> - xfs_inode_t *dp,
> - struct xfs_name *name,
> - xfs_ino_t ino,
> - xfs_fsblock_t *first, /* bmap's firstblock */
> + struct xfs_trans *tp,
> + struct xfs_inode *dp,
> + struct xfs_name *name,
> + xfs_ino_t ino,
> + xfs_fsblock_t *first, /* bmap's firstblock */
> struct xfs_defer_ops *dfops, /* bmap's freeblock list */
> - xfs_extlen_t total) /* bmap's total block count */
> + xfs_extlen_t total, /* bmap's total block count */
> + xfs_dir2_dataptr_t *offset) /* OUT: offset in directory */
> {
> struct xfs_da_args *args;
> int rval;
> @@ -495,6 +496,8 @@ xfs_dir_removename(
> rval = xfs_dir2_leaf_removename(args);
> else
> rval = xfs_dir2_node_removename(args);
> + if (offset)
> + *offset = args->offset;
> out_free:
FWIW I complain in a review of a later patch about this label moving
above the "if (offset)".
--D
> kmem_free(args);
> return rval;
> diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
> index e349900..e1bd05d 100644
> --- a/fs/xfs/libxfs/xfs_dir2.h
> +++ b/fs/xfs/libxfs/xfs_dir2.h
> @@ -139,7 +139,9 @@ extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
> extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
> struct xfs_name *name, xfs_ino_t ino,
> xfs_fsblock_t *first,
> - struct xfs_defer_ops *dfops, xfs_extlen_t tot);
> + struct xfs_defer_ops *dfops,
> + xfs_extlen_t tot,
> + xfs_dir2_dataptr_t *offset);
> extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
> struct xfs_name *name, xfs_ino_t inum,
> xfs_fsblock_t *first,
> diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
> index 79684d5..4dbe2fc 100644
> --- a/fs/xfs/libxfs/xfs_dir2_block.c
> +++ b/fs/xfs/libxfs/xfs_dir2_block.c
> @@ -791,9 +791,9 @@ xfs_dir2_block_removename(
> /*
> * Point to the data entry using the leaf entry.
> */
> + args->offset = be32_to_cpu(blp[ent].address);
> dep = (xfs_dir2_data_entry_t *)((char *)hdr +
> - xfs_dir2_dataptr_to_off(args->geo,
> - be32_to_cpu(blp[ent].address)));
> + xfs_dir2_dataptr_to_off(args->geo, args->offset));
> /*
> * Mark the data entry's space free.
> */
> diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
> index 2ac7a7e..197e627 100644
> --- a/fs/xfs/libxfs/xfs_dir2_leaf.c
> +++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
> @@ -1383,9 +1383,10 @@ xfs_dir2_leaf_removename(
> * Point to the leaf entry, use that to point to the data entry.
> */
> lep = &ents[index];
> - db = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
> + args->offset = be32_to_cpu(lep->address);
> + db = xfs_dir2_dataptr_to_db(args->geo, args->offset);
> dep = (xfs_dir2_data_entry_t *)((char *)hdr +
> - xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address)));
> + xfs_dir2_dataptr_to_off(args->geo, args->offset));
> needscan = needlog = 0;
> oldbest = be16_to_cpu(bf[0].length);
> ltp = xfs_dir2_leaf_tail_p(args->geo, leaf);
> diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
> index 8bc91f8..13d5244 100644
> --- a/fs/xfs/libxfs/xfs_dir2_node.c
> +++ b/fs/xfs/libxfs/xfs_dir2_node.c
> @@ -1238,9 +1238,10 @@ xfs_dir2_leafn_remove(
> /*
> * Extract the data block and offset from the entry.
> */
> - db = xfs_dir2_dataptr_to_db(args->geo, be32_to_cpu(lep->address));
> + args->offset = be32_to_cpu(lep->address);
> + db = xfs_dir2_dataptr_to_db(args->geo, args->offset);
> ASSERT(dblk->blkno == db);
> - off = xfs_dir2_dataptr_to_off(args->geo, be32_to_cpu(lep->address));
> + off = xfs_dir2_dataptr_to_off(args->geo, args->offset);
> ASSERT(dblk->index == off);
>
> /*
> diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c
> index 489bdef..9e90c22 100644
> --- a/fs/xfs/libxfs/xfs_dir2_sf.c
> +++ b/fs/xfs/libxfs/xfs_dir2_sf.c
> @@ -919,6 +919,8 @@ xfs_dir2_sf_removename(
> XFS_CMP_EXACT) {
> ASSERT(dp->d_ops->sf_get_ino(sfp, sfep) ==
> args->inumber);
> + args->offset = xfs_dir2_byte_to_dataptr(
> + xfs_dir2_sf_get_offset(sfep));
> break;
> }
> }
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 3abcb17..358a98a 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -2639,8 +2639,8 @@ xfs_remove(
> goto out_trans_cancel;
>
> xfs_defer_init(&dfops, &first_block);
> - error = xfs_dir_removename(tp, dp, name, ip->i_ino,
> - &first_block, &dfops, resblks);
> + error = xfs_dir_removename(tp, dp, name, ip->i_ino, &first_block,
> + &dfops, resblks, NULL);
> if (error) {
> ASSERT(error != -ENOENT);
> goto out_bmap_cancel;
> @@ -3150,7 +3150,8 @@ xfs_rename(
> &first_block, &dfops, spaceres);
> } else
> error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
> - &first_block, &dfops, spaceres);
> + &first_block, &dfops, spaceres,
> + NULL);
> if (error)
> goto out_bmap_cancel;
>
> --
> 2.7.4
>
> --
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