xfs: add fs geometry bit for sparse inode chunks

Define an fs geometry bit for sparse inode chunks such that the
characteristic of the fs can be identified by userspace.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 18dc721..89689c6 100644 (file)
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -239,6 +239,7 @@ typedef struct xfs_fsop_resblks {
 #define XFS_FSOP_GEOM_FLAGS_V5SB       0x8000  /* version 5 superblock */
 #define XFS_FSOP_GEOM_FLAGS_FTYPE      0x10000 /* inode directory types */
 #define XFS_FSOP_GEOM_FLAGS_FINOBT     0x20000 /* free inode btree */
+#define XFS_FSOP_GEOM_FLAGS_SPINODES   0x40000 /* sparse inode chunks  */
 
 /*
  * Minimum and maximum sizes need for growth checks.

diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index cb7e8a2..4bd6463 100644 (file)
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -101,7 +101,9 @@ xfs_fs_geometry(
                        (xfs_sb_version_hasftype(&mp->m_sb) ?
                                XFS_FSOP_GEOM_FLAGS_FTYPE : 0) |
                        (xfs_sb_version_hasfinobt(&mp->m_sb) ?
-                               XFS_FSOP_GEOM_FLAGS_FINOBT : 0);
+                               XFS_FSOP_GEOM_FLAGS_FINOBT : 0) |
+                       (xfs_sb_version_hassparseinodes(&mp->m_sb) ?
+                               XFS_FSOP_GEOM_FLAGS_SPINODES : 0);
                geo->logsectsize = xfs_sb_version_hassector(&mp->m_sb) ?
                                mp->m_sb.sb_logsectsize : BBSIZE;
                geo->rtsectsize = mp->m_sb.sb_blocksize;