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| author | Eric Sandeen <sandeen@sandeen.net> | 2008-04-10 06:19:34 +0400 |
|---|---|---|
| committer | Lachlan McIlroy <lachlan@redback.melbourne.sgi.com> | 2008-04-10 10:25:26 +0400 |
| commit | e6957ea48429aeda4f5d51af4238231d44b0dc4a (patch) | |
| tree | 860c95c0e9446191262bb44ad436d38afb8cb7d6 /fs/xfs/xfs_sb.h | |
| parent | ee1c090825bf2f1cb9712489c234eabf69a9a78f (diff) | |
| download | linux-e6957ea48429aeda4f5d51af4238231d44b0dc4a.tar.xz | |
[XFS] Ensure "both" features2 slots are consistent
Since older kernels may look in the sb_bad_features2 slot for flags,
rather than zeroing it out on fixup, we should make it equal to the
sb_features2 value.
Also, if the ATTR2 flag was not found prior to features2 fixup, it was not
set in the mount flags, so re-check after the fixup so that the current
session will use the feature.
Also fix up the comments to reflect these changes.
SGI-PV: 980085
SGI-Modid: xfs-linux-melb:xfs-kern:30778a
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_sb.h')
| -rw-r--r-- | fs/xfs/xfs_sb.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index b1a83f8ec044..d904efe7f871 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -320,11 +320,12 @@ static inline int xfs_sb_good_version(xfs_sb_t *sbp) #endif /* __KERNEL__ */ /* - * Detect a bad features2 field + * Detect a mismatched features2 field. Older kernels read/wrote + * this into the wrong slot, so to be safe we keep them in sync. */ -static inline int xfs_sb_has_bad_features2(xfs_sb_t *sbp) +static inline int xfs_sb_has_mismatched_features2(xfs_sb_t *sbp) { - return (sbp->sb_bad_features2 != 0); + return (sbp->sb_bad_features2 != sbp->sb_features2); } static inline unsigned xfs_sb_version_tonew(unsigned v) |