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xfs: refactor inode update in iunlink_remove 

In xfs_iunlink_remove we have two identical calls to
xfs_iunlink_update_inode, so move it out of the if statement to simplify
the code some more.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong 2019-02-07 10:37:15 -08:00
parent 23ffa52cc7
commit b1d2a068ea
1 changed files with 13 additions and 21 deletions
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34
fs/xfs/xfs_inode.c
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@ -2189,6 +2189,7 @@ xfs_iunlink_remove(
xfs_agnumber_t agno = XFS_INO_TO_AGNO(mp, ip->i_ino);
xfs_agino_t agino = XFS_INO_TO_AGINO(mp, ip->i_ino);
xfs_agino_t next_agino;
xfs_agino_t head_agino;
short bucket_index = agino % XFS_AGI_UNLINKED_BUCKETS;
int error;
@ -2202,23 +2203,23 @@ xfs_iunlink_remove(
* Get the index into the agi hash table for the list this inode will
* go on. Make sure the head pointer isn't garbage.
*/
next_agino = be32_to_cpu(agi->agi_unlinked[bucket_index]);
if (!xfs_verify_agino(mp, agno, next_agino)) {
head_agino = be32_to_cpu(agi->agi_unlinked[bucket_index]);
if (!xfs_verify_agino(mp, agno, head_agino)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
agi, sizeof(*agi));
return -EFSCORRUPTED;
}
if (next_agino == agino) {
/*
* We're at the head of the list. Get the inode's on-disk
* buffer to see if there is anyone after us on the list.
*/
error = xfs_iunlink_update_inode(tp, ip, agno, NULLAGINO,
&next_agino);
if (error)
return error;
/*
* Set our inode's next_unlinked pointer to NULL and then return
* the old pointer value so that we can update whatever was previous
* to us in the list to point to whatever was next in the list.
*/
error = xfs_iunlink_update_inode(tp, ip, agno, NULLAGINO, &next_agino);
if (error)
return error;
if (head_agino == agino) {
/* Point the head of the list to the next unlinked inode. */
error = xfs_iunlink_update_bucket(tp, agno, agibp, bucket_index,
next_agino);
@ -2229,20 +2230,11 @@ xfs_iunlink_remove(
xfs_agino_t prev_agino;
/* We need to search the list for the inode being freed. */
error = xfs_iunlink_map_prev(tp, agno, next_agino, agino,
error = xfs_iunlink_map_prev(tp, agno, head_agino, agino,
&prev_agino, &imap, &last_dip, &last_ibp);
if (error)
return error;
/*
* Now last_ibp points to the buffer previous to us on the
* unlinked list. Pull us from the list.
*/
error = xfs_iunlink_update_inode(tp, ip, agno, NULLAGINO,
&next_agino);
if (error)
return error;
/* Point the previous inode on the list to the next inode. */
xfs_iunlink_update_dinode(tp, agno, prev_agino, last_ibp,
last_dip, &imap, next_agino);