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authorChristoph Hellwig <hch@infradead.org>2008-10-30 17:55:08 +1100
committerLachlan McIlroy <lachlan@sgi.com>2008-10-30 17:55:08 +1100
commit1ec7944beb6f3c29f1e58a66422130133727e9e1 (patch)
treee71281cbfe81e427a0a307db696778af89210472 /fs/xfs
parent469fc23d5dd172665c69099db776c39bb1b70f92 (diff)
[XFS] fix biosize option
iosizelog shouldn't be the same as iosize but the logarithm of it. Then again the current biosize option doesn't make much sense to me as it doesn't set the preferred I/O size as mentioned in the comment next to it but rather the allocation size and thus is identical to the allocsize option (except for the missing logarithm). It's also not documented in Documentation/filesystems/xfs.txt or the mount manpage. SGI-PV: 987246 SGI-Modid: xfs-linux-melb:xfs-kern:32373a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 62d485888496..c3d004bc4621 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -270,7 +270,7 @@ xfs_parseargs(
return EINVAL;
}
iosize = simple_strtoul(value, &eov, 10);
- iosizelog = (uint8_t) iosize;
+ iosizelog = ffs(iosize) - 1;
} else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
if (!value || !*value) {
cmn_err(CE_WARN,