On Fri, Nov 17, 2017 at 11:21:33AM -0700, Allison Henderson wrote:
> From: Mark Tinguely <tinguely@xxxxxxx>
>
> Return the directory offset information when adding an entry to the
> directory.
>
> This offset will be used as the parent pointer offset in xfs_create,
> xfs_symlink, xfs_link and xfs_rename.
>
> [dchinner: forward ported and cleaned up]
> [dchinner: no s-o-b from Mark]
> [bfoster: rebased, use args->geo in dir code]
> [achender: rebased, chaged __uint32_t to xfs_dir2_dataptr_t]
>
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
> Signed-off-by: Allison Henderson <allison.henderson@xxxxxxxxxx>
> ---
> fs/xfs/libxfs/xfs_da_btree.h | 1 +
> fs/xfs/libxfs/xfs_dir2.c | 8 ++++++--
> fs/xfs/libxfs/xfs_dir2.h | 3 ++-
> fs/xfs/libxfs/xfs_dir2_block.c | 1 +
> fs/xfs/libxfs/xfs_dir2_leaf.c | 2 ++
> fs/xfs/libxfs/xfs_dir2_node.c | 2 ++
> fs/xfs/libxfs/xfs_dir2_sf.c | 2 ++
> fs/xfs/xfs_inode.c | 9 +++++----
> fs/xfs/xfs_symlink.c | 2 +-
> 9 files changed, 22 insertions(+), 8 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_da_btree.h b/fs/xfs/libxfs/xfs_da_btree.h
> index ae6de17..bce96d6 100644
> --- a/fs/xfs/libxfs/xfs_da_btree.h
> +++ b/fs/xfs/libxfs/xfs_da_btree.h
> @@ -86,6 +86,7 @@ typedef struct xfs_da_args {
> int rmtvaluelen2; /* remote attr value length in bytes */
> int op_flags; /* operation flags */
> enum xfs_dacmp cmpresult; /* name compare result for lookups */
> + xfs_dir2_dataptr_t offset; /* OUT: offset in directory */
> } xfs_da_args_t;
>
> /*
> diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
> index ccf9783..a1ca460 100644
> --- a/fs/xfs/libxfs/xfs_dir2.c
> +++ b/fs/xfs/libxfs/xfs_dir2.c
> @@ -268,7 +268,8 @@ xfs_dir_createname(
> xfs_ino_t inum, /* new entry inode number */
> 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 entry's dir offset */
> {
> struct xfs_da_args *args;
> int rval;
> @@ -323,6 +324,9 @@ xfs_dir_createname(
> else
> rval = xfs_dir2_node_addname(args);
>
> + /* return the location that this entry was place in the parent inode */
> + if (offset)
> + *offset = args->offset;
> out_free:
FWIW I think I complain later about this label moving in a subsequent
patch.... and you'll see this same comment two more times. Downside of
reviewing in backwards order, I guess.
--D
> kmem_free(args);
> return rval;
> @@ -570,7 +574,7 @@ xfs_dir_canenter(
> xfs_inode_t *dp,
> struct xfs_name *name) /* name of entry to add */
> {
> - return xfs_dir_createname(tp, dp, name, 0, NULL, NULL, 0);
> + return xfs_dir_createname(tp, dp, name, 0, NULL, NULL, 0, NULL);
> }
>
> /*
> diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
> index 21c8f8b..e349900 100644
> --- a/fs/xfs/libxfs/xfs_dir2.h
> +++ b/fs/xfs/libxfs/xfs_dir2.h
> @@ -131,7 +131,8 @@ extern int xfs_dir_init(struct xfs_trans *tp, struct xfs_inode *dp,
> extern int xfs_dir_createname(struct xfs_trans *tp, struct xfs_inode *dp,
> struct xfs_name *name, xfs_ino_t inum,
> 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_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
> struct xfs_name *name, xfs_ino_t *inum,
> struct xfs_name *ci_name);
> diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
> index 43c902f..79684d5 100644
> --- a/fs/xfs/libxfs/xfs_dir2_block.c
> +++ b/fs/xfs/libxfs/xfs_dir2_block.c
> @@ -552,6 +552,7 @@ xfs_dir2_block_addname(
> dp->d_ops->data_put_ftype(dep, args->filetype);
> tagp = dp->d_ops->data_entry_tag_p(dep);
> *tagp = cpu_to_be16((char *)dep - (char *)hdr);
> + args->offset = xfs_dir2_byte_to_dataptr((char *)dep - (char *)hdr);
> /*
> * Clean up the bestfree array and log the header, tail, and entry.
> */
> diff --git a/fs/xfs/libxfs/xfs_dir2_leaf.c b/fs/xfs/libxfs/xfs_dir2_leaf.c
> index 27297a6..2ac7a7e 100644
> --- a/fs/xfs/libxfs/xfs_dir2_leaf.c
> +++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
> @@ -863,6 +863,8 @@ xfs_dir2_leaf_addname(
> dp->d_ops->data_put_ftype(dep, args->filetype);
> tagp = dp->d_ops->data_entry_tag_p(dep);
> *tagp = cpu_to_be16((char *)dep - (char *)hdr);
> + args->offset = xfs_dir2_db_off_to_dataptr(args->geo, use_block,
> + (char *)dep - (char *)hdr);
> /*
> * Need to scan fix up the bestfree table.
> */
> diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
> index 682e2bf..8bc91f8 100644
> --- a/fs/xfs/libxfs/xfs_dir2_node.c
> +++ b/fs/xfs/libxfs/xfs_dir2_node.c
> @@ -2022,6 +2022,8 @@ xfs_dir2_node_addname_int(
> dp->d_ops->data_put_ftype(dep, args->filetype);
> tagp = dp->d_ops->data_entry_tag_p(dep);
> *tagp = cpu_to_be16((char *)dep - (char *)hdr);
> + args->offset = xfs_dir2_db_off_to_dataptr(args->geo, dbno,
> + (char *)dep - (char *)hdr);
> xfs_dir2_data_log_entry(args, dbp, dep);
> /*
> * Rescan the block for bestfree if needed.
> diff --git a/fs/xfs/libxfs/xfs_dir2_sf.c b/fs/xfs/libxfs/xfs_dir2_sf.c
> index be8b975..489bdef 100644
> --- a/fs/xfs/libxfs/xfs_dir2_sf.c
> +++ b/fs/xfs/libxfs/xfs_dir2_sf.c
> @@ -407,6 +407,7 @@ xfs_dir2_sf_addname_easy(
> memcpy(sfep->name, args->name, sfep->namelen);
> dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
> dp->d_ops->sf_put_ftype(sfep, args->filetype);
> + args->offset = xfs_dir2_byte_to_dataptr(offset);
>
> /*
> * Update the header and inode.
> @@ -498,6 +499,7 @@ xfs_dir2_sf_addname_hard(
> memcpy(sfep->name, args->name, sfep->namelen);
> dp->d_ops->sf_put_ino(sfp, sfep, args->inumber);
> dp->d_ops->sf_put_ftype(sfep, args->filetype);
> + args->offset = xfs_dir2_byte_to_dataptr(offset);
> sfp->count++;
> if (args->inumber > XFS_DIR2_MAX_SHORT_INUM && !objchange)
> sfp->i8count++;
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index 4ec5b7f..3abcb17 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -1252,7 +1252,8 @@ xfs_create(
>
> error = xfs_dir_createname(tp, dp, name, ip->i_ino,
> &first_block, &dfops, resblks ?
> - resblks - XFS_IALLOC_SPACE_RES(mp) : 0);
> + resblks - XFS_IALLOC_SPACE_RES(mp) : 0,
> + NULL);
> if (error) {
> ASSERT(error != -ENOSPC);
> goto out_trans_cancel;
> @@ -1495,7 +1496,7 @@ xfs_link(
> }
>
> error = xfs_dir_createname(tp, tdp, target_name, sip->i_ino,
> - &first_block, &dfops, resblks);
> + &first_block, &dfops, resblks, NULL);
> if (error)
> goto error_return;
> xfs_trans_ichgtime(tp, tdp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
> @@ -3031,8 +3032,8 @@ 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,
> - &dfops, spaceres);
> + src_ip->i_ino, &first_block, &dfops,
> + spaceres, NULL);
> if (error)
> goto out_bmap_cancel;
>
> diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
> index 68d3ca2..fc803ae 100644
> --- a/fs/xfs/xfs_symlink.c
> +++ b/fs/xfs/xfs_symlink.c
> @@ -363,7 +363,7 @@ xfs_symlink(
> * Create the directory entry for the symlink.
> */
> error = xfs_dir_createname(tp, dp, link_name, ip->i_ino,
> - &first_block, &dfops, resblks);
> + &first_block, &dfops, resblks, NULL);
> if (error)
> goto out_bmap_cancel;
> xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
> --
> 2.7.4
>
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