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| author | Tim Shimmin <tes@sgi.com> | 2008-04-17 16:50:16 +1000 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-04-18 12:04:08 +1000 |
| commit | 6d1337b29bf09a97682d39db36ac2d0dfc6659c0 (patch) | |
| tree | ead8e985e731f984b9ba1f31568518206ad2592a /fs/xfs/xfs_bmap.c | |
| parent | cb49dbb130e17a6f9af4cb4714cf6976cf09afdf (diff) | |
| download | lwn-6d1337b29bf09a97682d39db36ac2d0dfc6659c0.tar.gz lwn-6d1337b29bf09a97682d39db36ac2d0dfc6659c0.zip | |
[XFS] xfs_bmap_compute_maxlevels should be based on di_forkoff
Fix up xfs_bmap_compute_maxlevels() to account for the case when we go
from using attr2 to using attr1. In that case attr1 will no longer
necessarily be at m_attr_offset>>3, but could be at a different value for
di_forkoff. Therefore, we return the worst case scenario using MINDBTPTRS
and MINABTPTRS, as this function is used for determining the maximum log
space.
SGI-PV: 979606
SGI-Modid: xfs-linux-melb:xfs-kern:30862a
Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap.c')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 6d9b5448deb2..eb198c01c35d 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]; |