summaryrefslogtreecommitdiff
path: root/fs/xfs
diff options
context:
space:
mode:
authorDarrick J. Wong <darrick.wong@oracle.com>2016-03-07 00:39:56 +0300
committerDave Chinner <david@fromorbit.com>2016-03-07 00:39:56 +0300
commit49ca9118e6ecca63c78de924801b8b9fe4af44ff (patch)
tree68c86e265be6aa44525736ff666802b247e26615 /fs/xfs
parenta798011c8fd4286605b990c1722c16903fc14b7a (diff)
downloadlinux-49ca9118e6ecca63c78de924801b8b9fe4af44ff.tar.xz
xfs: fix computation of inode btree maxlevels
Commit 88740da18[1] introduced a function to compute the maximum height of the inode btree back in 1994. Back then, apparently, the freespace and inode btrees shared the same geometry; however, it has long since been the case that the inode and freespace btrees have different record and key sizes. Therefore, we must use m_inobt_mnr if we want a correct calculation/log reservation/etc. (Yes, this bug has been around for 21 years and ten months.) (Yes, I was in middle school when this bug was committed.) [1] http://oss.sgi.com/cgi-bin/gitweb.cgi?p=archive/xfs-import.git;a=commitdiff;h=88740da18ddd9d7ba3ebaa9502fefc6ef2fd19cd Historical-research-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/libxfs/xfs_ialloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 66d702e6b9ff..22297f9b0fd5 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -2403,8 +2403,8 @@ xfs_ialloc_compute_maxlevels(
maxleafents = (1LL << XFS_INO_AGINO_BITS(mp)) >>
XFS_INODES_PER_CHUNK_LOG;
- minleafrecs = mp->m_alloc_mnr[0];
- minnoderecs = mp->m_alloc_mnr[1];
+ minleafrecs = mp->m_inobt_mnr[0];
+ minnoderecs = mp->m_inobt_mnr[1];
maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
for (level = 1; maxblocks > 1; level++)
maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs;