Make inode64 a remountable option
Actually, there is no reason about why a user must umount and mount a
XFS filesystem to enable 'inode64' option. So, this patch makes this a
remountable option.
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 19e2380..c416a01 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -120,12 +120,13 @@
* in the future, too.
*/
enum {
- Opt_barrier, Opt_nobarrier, Opt_err
+ Opt_barrier, Opt_nobarrier, Opt_inode64, Opt_err
};
static const match_table_t tokens = {
{Opt_barrier, "barrier"},
{Opt_nobarrier, "nobarrier"},
+ {Opt_inode64, "inode64"},
{Opt_err, NULL}
};
@@ -1031,6 +1032,30 @@
xfs_reserve_blocks(mp, &resblks, NULL);
}
+STATIC void
+xfs_set_inode64(struct xfs_mount *mp)
+{
+ int i = 0;
+
+ for (i = 0; i < mp->m_sb.sb_agcount; i++) {
+ struct xfs_perag *pag;
+
+ pag = xfs_perag_get(mp, i);
+ pag->pagi_inodeok = 1;
+ pag->pagf_metadata = 0;
+ xfs_perag_put(pag);
+ }
+
+ /* There is no need for lock protection on m_flags,
+ * the rw_semaphore of the VFS superblock is locked
+ * during mount/umount/remount operations, so this is
+ * enough to avoid concurency on the m_flags field
+ */
+ mp->m_flags &= ~(XFS_MOUNT_32BITINODES |
+ XFS_MOUNT_SMALL_INUMS);
+ mp->m_maxagi = i;
+}
+
STATIC int
xfs_fs_remount(
struct super_block *sb,
@@ -1056,6 +1081,9 @@
case Opt_nobarrier:
mp->m_flags &= ~XFS_MOUNT_BARRIER;
break;
+ case Opt_inode64:
+ xfs_set_inode64(mp);
+ break;
default:
/*
* Logically we would return an error here to prevent