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-rw-r--r--fs/xfs/xfs_bmap.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 6d9b5448deb..eb198c01c35 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -4153,16 +4153,21 @@ xfs_bmap_compute_maxlevels(
* number of leaf entries, is controlled by the type of di_nextents
* (a signed 32-bit number, xfs_extnum_t), or by di_anextents
* (a signed 16-bit number, xfs_aextnum_t).
+ *
+ * Note that we can no longer assume that if we are in ATTR1 that
+ * the fork offset of all the inodes will be (m_attroffset >> 3)
+ * because we could have mounted with ATTR2 and then mounted back
+ * with ATTR1, keeping the di_forkoff's fixed but probably at
+ * various positions. Therefore, for both ATTR1 and ATTR2
+ * we have to assume the worst case scenario of a minimum size
+ * available.
*/
if (whichfork == XFS_DATA_FORK) {
maxleafents = MAXEXTNUM;
- sz = (mp->m_flags & XFS_MOUNT_ATTR2) ?
- XFS_BMDR_SPACE_CALC(MINDBTPTRS) : mp->m_attroffset;
+ sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS);
} else {
maxleafents = MAXAEXTNUM;
- sz = (mp->m_flags & XFS_MOUNT_ATTR2) ?
- XFS_BMDR_SPACE_CALC(MINABTPTRS) :
- mp->m_sb.sb_inodesize - mp->m_attroffset;
+ sz = XFS_BMDR_SPACE_CALC(MINABTPTRS);
}
maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
minleafrecs = mp->m_bmap_dmnr[0];