[XFS] merge xfs_mntupdate into xfs_fs_remount

xfs_mntupdate already is completely Linux specific due to the VFS flags
passed in, so it might aswell be merged into xfs_fs_remount.

SGI-PV: 981498
SGI-Modid: xfs-linux-melb:xfs-kern:31185a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

1 files changed, 21 insertions, 2 deletions

diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 5c7144bc3106..a3ecdf442465 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -52,6 +52,7 @@
 #include "xfs_version.h"
 #include "xfs_log_priv.h"
 #include "xfs_trans_priv.h"
+#include "xfs_filestream.h"
 
 #include <linux/namei.h>
 #include <linux/init.h>
@@ -1220,8 +1221,26 @@ xfs_fs_remount(
         int                     error;
 
         error = xfs_parseargs(mp, options, args, 1);
-        if (!error)
-                error = xfs_mntupdate(mp, flags, args);
+        if (error)
+                goto out_free_args;
+
+        if (!(*flags & MS_RDONLY)) {                    /* rw/ro -> rw */
+                if (mp->m_flags & XFS_MOUNT_RDONLY)
+                mp->m_flags &= ~XFS_MOUNT_RDONLY;
+                if (args->flags & XFSMNT_BARRIER) {
+                        mp->m_flags |= XFS_MOUNT_BARRIER;
+                        xfs_mountfs_check_barriers(mp);
+                } else {
+                        mp->m_flags &= ~XFS_MOUNT_BARRIER;
+                }
+        } else if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { /* rw -> ro */
+                xfs_filestream_flush(mp);
+                xfs_sync(mp, SYNC_DATA_QUIESCE);
+                xfs_attr_quiesce(mp);
+                mp->m_flags |= XFS_MOUNT_RDONLY;
+        }
+
+ out_free_args:
         kmem_free(args);
         return -error;
 }