[PATCH RESEND v2 06/18] xfs: get directory offset when removing directory name

Allison Henderson
2022-08-04T19:40:38Z

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,
Changed typedefs to raw struct types]

Signed-off-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/libxfs/xfs_dir2.c | 6 +++++-
fs/xfs/libxfs/xfs_dir2.h | 3 ++-
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 | 4 ++--
7 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index c0629c2cdecc..e62ec568f42d 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -436,7 +436,8 @@ xfs_dir_removename(
struct xfs_inode *dp,
struct xfs_name *name,
xfs_ino_t ino,
- 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;
@@ -481,6 +482,9 @@ xfs_dir_removename(
else
rval = xfs_dir2_node_removename(args);
out_free:
+ if (offset)
+ *offset = args->offset;
+
kmem_free(args);
return rval;
}
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index 4d1c2570b833..c581d3b19bc6 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -46,7 +46,8 @@ extern int xfs_dir_lookup(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *ci_name);
extern int xfs_dir_removename(struct xfs_trans *tp, struct xfs_inode *dp,
struct xfs_name *name, xfs_ino_t ino,
- xfs_extlen_t tot);
+ xfs_extlen_t tot,
+ xfs_dir2_dataptr_t *offset);
extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp,
const struct xfs_name *name, xfs_ino_t inum,
xfs_extlen_t tot);
diff --git a/fs/xfs/libxfs/xfs_dir2_block.c b/fs/xfs/libxfs/xfs_dir2_block.c
index 70aeab9d2a12..d36f3f1491da 100644
--- a/fs/xfs/libxfs/xfs_dir2_block.c
+++ b/fs/xfs/libxfs/xfs_dir2_block.c
@@ -810,9 +810,9 @@ 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 bd0c2f963545..c13763c16095 100644
--- a/fs/xfs/libxfs/xfs_dir2_leaf.c
+++ b/fs/xfs/libxfs/xfs_dir2_leaf.c
@@ -1381,9 +1381,10 @@ xfs_dir2_leaf_removename(
* Point to the leaf entry, use that to point to the data entry.
*/
lep = &leafhdr.ents[index];
- db = xfs_dir2_dataptr_to_db(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(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(geo, leaf);
diff --git a/fs/xfs/libxfs/xfs_dir2_node.c b/fs/xfs/libxfs/xfs_dir2_node.c
index 5a9513c036b8..39cbdeafa0f6 100644
--- a/fs/xfs/libxfs/xfs_dir2_node.c
+++ b/fs/xfs/libxfs/xfs_dir2_node.c
@@ -1296,9 +1296,10 @@ xfs_dir2_leafn_remove(
/*
* Extract the data block and offset from the entry.
*/
- db = xfs_dir2_dataptr_to_db(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(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 541235b37d69..2dc1d8d52228 100644
--- a/fs/xfs/libxfs/xfs_dir2_sf.c
+++ b/fs/xfs/libxfs/xfs_dir2_sf.c
@@ -971,6 +971,8 @@ xfs_dir2_sf_removename(
XFS_CMP_EXACT) {
ASSERT(xfs_dir2_sf_get_ino(mp, 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 08550f579551..ce888f844053 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2506,7 +2506,7 @@ xfs_remove(
if (error)
goto out_trans_cancel;

- error = xfs_dir_removename(tp, dp, name, ip->i_ino, resblks);
+ error = xfs_dir_removename(tp, dp, name, ip->i_ino, resblks, NULL);
if (error) {
ASSERT(error != -ENOENT);
goto out_trans_cancel;
@@ -3080,7 +3080,7 @@ xfs_rename(
spaceres);
else
error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino,
- spaceres);
+ spaceres, NULL);

if (error)
goto out_trans_cancel;
--
2.25.1