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xfs: cleanup xfs_idestroy_fork

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Move freeing the dynamically allocated attr and COW fork, as well
as zeroing the pointers where actually needed into the callers, and
just pass the xfs_ifork structure to xfs_idestroy_fork.  Also simplify
the kmem_free calls by not checking for NULL first.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-05-18 10:29:27 -07:00 committed by Darrick J. Wong
parent f7e67b20ec
commit ef8385128d
6 changed files with 28 additions and 37 deletions
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7
fs/xfs/libxfs/xfs_attr_leaf.c
View File

@ -717,11 +717,10 @@ xfs_attr_fork_remove(
{
ASSERT(ip->i_afp->if_nextents == 0);
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
xfs_idestroy_fork(ip->i_afp);
kmem_cache_free(xfs_ifork_zone, ip->i_afp);
ip->i_afp = NULL;
ip->i_d.di_forkoff = 0;
ASSERT(ip->i_afp == NULL);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}

2
fs/xfs/libxfs/xfs_inode_buf.c
View File

@ -271,7 +271,7 @@ xfs_inode_from_disk(
return 0;
out_destroy_data_fork:
xfs_idestroy_fork(ip, XFS_DATA_FORK);
xfs_idestroy_fork(&ip->i_df);
return error;
}

26
fs/xfs/libxfs/xfs_inode_fork.c
View File

@ -503,39 +503,25 @@ xfs_idata_realloc(
void
xfs_idestroy_fork(
xfs_inode_t *ip,
int whichfork)
struct xfs_ifork *ifp)
{
struct xfs_ifork *ifp;
ifp = XFS_IFORK_PTR(ip, whichfork);
if (ifp->if_broot != NULL) {
kmem_free(ifp->if_broot);
ifp->if_broot = NULL;
}
/*
* If the format is local, then we can't have an extents
* array so just look for an inline data array. If we're
* not local then we may or may not have an extents list,
* so check and free it up if we do.
* If the format is local, then we can't have an extents array so just
* look for an inline data array. If we're not local then we may or may
* not have an extents list, so check and free it up if we do.
*/
if (ifp->if_format == XFS_DINODE_FMT_LOCAL) {
if (ifp->if_u1.if_data != NULL) {
kmem_free(ifp->if_u1.if_data);
ifp->if_u1.if_data = NULL;
}
} else if ((ifp->if_flags & XFS_IFEXTENTS) && ifp->if_height) {
} else if (ifp->if_flags & XFS_IFEXTENTS) {
if (ifp->if_height)
xfs_iext_destroy(ifp);
}
if (whichfork == XFS_ATTR_FORK) {
kmem_cache_free(xfs_ifork_zone, ip->i_afp);
ip->i_afp = NULL;
} else if (whichfork == XFS_COW_FORK) {
kmem_cache_free(xfs_ifork_zone, ip->i_cowfp);
ip->i_cowfp = NULL;
}
}
/*

2
fs/xfs/libxfs/xfs_inode_fork.h
View File

@ -86,7 +86,7 @@ int xfs_iformat_data_fork(struct xfs_inode *, struct xfs_dinode *);
int xfs_iformat_attr_fork(struct xfs_inode *, struct xfs_dinode *);
void xfs_iflush_fork(struct xfs_inode *, struct xfs_dinode *,
struct xfs_inode_log_item *, int);
void xfs_idestroy_fork(struct xfs_inode *, int);
void xfs_idestroy_fork(struct xfs_ifork *ifp);
void xfs_idata_realloc(struct xfs_inode *ip, int64_t byte_diff,
int whichfork);
void xfs_iroot_realloc(struct xfs_inode *, int, int);

7
fs/xfs/xfs_attr_inactive.c
View File

@ -388,8 +388,11 @@ xfs_attr_inactive(
xfs_trans_cancel(trans);
out_destroy_fork:
/* kill the in-core attr fork before we drop the inode lock */
if (dp->i_afp)
xfs_idestroy_fork(dp, XFS_ATTR_FORK);
if (dp->i_afp) {
xfs_idestroy_fork(dp->i_afp);
kmem_cache_free(xfs_ifork_zone, dp->i_afp);
dp->i_afp = NULL;
}
if (lock_mode)
xfs_iunlock(dp, lock_mode);
return error;

15
fs/xfs/xfs_icache.c
View File

@ -87,15 +87,18 @@ xfs_inode_free_callback(
case S_IFREG:
case S_IFDIR:
case S_IFLNK:
xfs_idestroy_fork(ip, XFS_DATA_FORK);
xfs_idestroy_fork(&ip->i_df);
break;
}
if (ip->i_afp)
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
if (ip->i_cowfp)
xfs_idestroy_fork(ip, XFS_COW_FORK);
if (ip->i_afp) {
xfs_idestroy_fork(ip->i_afp);
kmem_cache_free(xfs_ifork_zone, ip->i_afp);
}
if (ip->i_cowfp) {
xfs_idestroy_fork(ip->i_cowfp);
kmem_cache_free(xfs_ifork_zone, ip->i_cowfp);
}
if (ip->i_itemp) {
ASSERT(!test_bit(XFS_LI_IN_AIL,
&ip->i_itemp->ili_item.li_flags));