xfs: don't need dirv2 checks anymore

If the the V2 directory feature bit is not set in the superblock
feature mask the filesystem will fail the good version check.
Hence we don't need any other version checking on the dir2 feature
bit in the code as the filesystem will not mount without it set.
Remove the checking code.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

4 files changed, 2 insertions, 18 deletions

diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index fda46253966a..0c8ba87a1e7a 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -92,7 +92,7 @@ xfs_dir_mount(
         int     nodehdr_size;
 
 
-        ASSERT(xfs_sb_version_hasdirv2(&mp->m_sb));
+        ASSERT(mp->m_sb.sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
         ASSERT((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) <=
                XFS_MAX_BLOCKSIZE);
 
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index d49c67acabf8..b19b01576944 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -75,6 +75,7 @@ xfs_fs_geometry(
         if (new_version >= 3) {
                 geo->version = XFS_FSOP_GEOM_VERSION;
                 geo->flags = XFS_FSOP_GEOM_FLAGS_NLINK |
+                             XFS_FSOP_GEOM_FLAGS_DIRV2 |
                         (xfs_sb_version_hasattr(&mp->m_sb) ?
                                 XFS_FSOP_GEOM_FLAGS_ATTR : 0) |
                         (xfs_sb_version_hasquota(&mp->m_sb) ?
@@ -87,8 +88,6 @@ xfs_fs_geometry(
                                 XFS_FSOP_GEOM_FLAGS_SHARED : 0) |
                         (xfs_sb_version_hasextflgbit(&mp->m_sb) ?
                                 XFS_FSOP_GEOM_FLAGS_EXTFLG : 0) |
-                        (xfs_sb_version_hasdirv2(&mp->m_sb) ?
-                                XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
                         (xfs_sb_version_hassector(&mp->m_sb) ?
                                 XFS_FSOP_GEOM_FLAGS_SECTOR : 0) |
                         (xfs_sb_version_hasasciici(&mp->m_sb) ?
diff --git a/fs/xfs/xfs_sb.c b/fs/xfs/xfs_sb.c
index 8baf61afae1d..de16dd558195 100644
--- a/fs/xfs/xfs_sb.c
+++ b/fs/xfs/xfs_sb.c
@@ -333,15 +333,6 @@ xfs_mount_validate_sb(
                 xfs_warn(mp, "Offline file system operation in progress!");
                 return XFS_ERROR(EFSCORRUPTED);
         }
-
-        /*
-         * Version 1 directory format has never worked on Linux.
-         */
-        if (unlikely(!xfs_sb_version_hasdirv2(sbp))) {
-                xfs_warn(mp, "file system using version 1 directory format");
-                return XFS_ERROR(ENOSYS);
-        }
-
         return 0;
 }
 
diff --git a/fs/xfs/xfs_sb.h b/fs/xfs/xfs_sb.h
index a2826cf57d78..822e62819741 100644
--- a/fs/xfs/xfs_sb.h
+++ b/fs/xfs/xfs_sb.h
@@ -403,12 +403,6 @@ static inline bool xfs_sb_version_hasshared(struct xfs_sb *sbp)
                 (sbp->sb_versionnum & XFS_SB_VERSION_SHAREDBIT);
 }
 
-static inline bool xfs_sb_version_hasdirv2(struct xfs_sb *sbp)
-{
-        return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||
-               (sbp->sb_versionnum & XFS_SB_VERSION_DIRV2BIT);
-}
-
 static inline bool xfs_sb_version_haslogv2(struct xfs_sb *sbp)
 {
         return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 ||