diff options
| -rw-r--r-- | fs/xfs/xfs_fsops.c | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_sb.c | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_sb.h | 17 |
3 files changed, 6 insertions, 16 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index b19b01576944..c31ac96349d2 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -84,8 +84,6 @@ xfs_fs_geometry( XFS_FSOP_GEOM_FLAGS_IALIGN : 0) | (xfs_sb_version_hasdalign(&mp->m_sb) ? XFS_FSOP_GEOM_FLAGS_DALIGN : 0) | - (xfs_sb_version_hasshared(&mp->m_sb) ? - XFS_FSOP_GEOM_FLAGS_SHARED : 0) | (xfs_sb_version_hasextflgbit(&mp->m_sb) ? XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) | (xfs_sb_version_hassector(&mp->m_sb) ? diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c index de16dd558195..c3453b11f563 100644 --- a/fs/xfs/xfs_sb.c +++ b/fs/xfs/xfs_sb.c @@ -291,7 +291,8 @@ xfs_mount_validate_sb( (sbp->sb_imax_pct > 100 /* zero sb_imax_pct is valid */) || sbp->sb_dblocks == 0 || sbp->sb_dblocks > XFS_MAX_DBLOCKS(sbp) || - sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp))) { + sbp->sb_dblocks < XFS_MIN_DBLOCKS(sbp) || + sbp->sb_shared_vn != 0)) { xfs_notice(mp, "SB sanity check failed"); return XFS_ERROR(EFSCORRUPTED); } diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h index 822e62819741..86a964cc6925 100644 --- a/fs/xfs/xfs_sb.h +++ b/fs/xfs/xfs_sb.h @@ -51,11 +51,12 @@ struct xfs_trans; /* * Supported feature bit list is just all bits in the versionnum field because - * we've used them all up and understand them all. + * we've used them all up and understand them all. Except, of course, for the + * shared superblock bit, which nobody knows what it does and so is unsupported. */ #define XFS_SB_VERSION_OKBITS \ - (XFS_SB_VERSION_NUMBITS | \ - XFS_SB_VERSION_ALLFBITS) + ((XFS_SB_VERSION_NUMBITS | XFS_SB_VERSION_ALLFBITS) & \ + ~XFS_SB_VERSION_SHAREDBIT) /* * There are two words to hold XFS "feature" bits: the original @@ -341,10 +342,6 @@ static inline bool xfs_sb_good_v4_features(struct xfs_sb *sbp) (sbp->sb_features2 & ~XFS_SB_VERSION2_OKBITS))) return false; - /* We don't support shared superblocks - nobody knows what it is */ - if (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT) - return false; - return true; } @@ -397,12 +394,6 @@ static inline bool xfs_sb_version_hasdalign(struct xfs_sb *sbp) return (sbp->sb_versionnum & XFS_SB_VERSION_DALIGNBIT); } -static inline bool xfs_sb_version_hasshared(struct xfs_sb *sbp) -{ - return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_4 && - (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT); -} - static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp) { return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 || |