[XFS] stop using xfs_itobp in xfs_bulkstat
xfs_bulkstat only wants the dinode, offset and buffer from a given inode
number. Instead of using xfs_itobp on a fake inode which is complicated
and currently leads to leaks of the security data just use xfs_inotobp
which is designed to do exactly the kind of lookup xfs_bulkstat wants. The
only thing that's missing in xfs_inotobp is a flags paramter that let's us
pass down XFS_IMAP_BULKSTAT, but that can easily added.
SGI-PV: 987246
SGI-Modid: xfs-linux-melb:xfs-kern:32397a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 42a214b..3511803 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -359,7 +359,6 @@
int ubused; /* bytes used by formatter */
xfs_buf_t *bp; /* ptr to on-disk inode cluster buf */
xfs_dinode_t *dip; /* ptr into bp for specific inode */
- xfs_inode_t *ip; /* ptr to in-core inode struct */
/*
* Get the last inode value, see if there's nothing to do.
@@ -585,6 +584,8 @@
if (flags & (BULKSTAT_FG_QUICK |
BULKSTAT_FG_INLINE)) {
+ int offset;
+
ino = XFS_AGINO_TO_INO(mp, agno,
agino);
bno = XFS_AGB_TO_DADDR(mp, agno,
@@ -595,19 +596,13 @@
*/
if (bp)
xfs_buf_relse(bp);
- ip = xfs_inode_alloc(mp, ino);
- if (!ip) {
- bp = NULL;
- rval = ENOMEM;
- break;
- }
- error = xfs_itobp(mp, NULL, ip,
- &dip, &bp, bno,
- XFS_IMAP_BULKSTAT,
- XFS_BUF_LOCK);
+
+ error = xfs_inotobp(mp, NULL, ino, &dip,
+ &bp, &offset,
+ XFS_IMAP_BULKSTAT);
+
if (!error)
- clustidx = ip->i_boffset / mp->m_sb.sb_inodesize;
- xfs_idestroy(ip);
+ clustidx = offset / mp->m_sb.sb_inodesize;
if (XFS_TEST_ERROR(error != 0,
mp, XFS_ERRTAG_BULKSTAT_READ_CHUNK,
XFS_RANDOM_BULKSTAT_READ_CHUNK)) {