ufs: add ->sync_fs

Add a ->sync_fs method for data integrity syncs, and reimplement
->write_super ontop of it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 22 insertions, 10 deletions

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 6560dda7b18..5faed7954d0 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1125,7 +1125,7 @@ failed_nomem:
         return -ENOMEM;
 }
 
-static void ufs_write_super(struct super_block *sb)
+static int ufs_sync_fs(struct super_block *sb, int wait)
 {
         struct ufs_sb_private_info * uspi;
         struct ufs_super_block_first * usb1;
@@ -1134,25 +1134,36 @@ static void ufs_write_super(struct super_block *sb)
 
         lock_super(sb);
         lock_kernel();
+
         UFSD("ENTER\n");
+
         flags = UFS_SB(sb)->s_flags;
         uspi = UFS_SB(sb)->s_uspi;
         usb1 = ubh_get_usb_first(uspi);
         usb3 = ubh_get_usb_third(uspi);
 
-        if (!(sb->s_flags & MS_RDONLY)) {
-                usb1->fs_time = cpu_to_fs32(sb, get_seconds());
-                if ((flags & UFS_ST_MASK) == UFS_ST_SUN 
-                  || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
-                  || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
-                        ufs_set_fs_state(sb, usb1, usb3,
-                                        UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
-                ufs_put_cstotal(sb);
-        }
+        usb1->fs_time = cpu_to_fs32(sb, get_seconds());
+        if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
+            (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
+            (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+                ufs_set_fs_state(sb, usb1, usb3,
+                                UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
+        ufs_put_cstotal(sb);
         sb->s_dirt = 0;
+
         UFSD("EXIT\n");
         unlock_kernel();
         unlock_super(sb);
+
+        return 0;
+}
+
+static void ufs_write_super(struct super_block *sb)
+{
+        if (!(sb->s_flags & MS_RDONLY))
+                ufs_sync_fs(sb, 1);
+        else
+                sb->s_dirt = 0;
 }
 
 static void ufs_put_super(struct super_block *sb)
@@ -1381,6 +1392,7 @@ static const struct super_operations ufs_super_ops = {
         .delete_inode   = ufs_delete_inode,
         .put_super      = ufs_put_super,
         .write_super    = ufs_write_super,
+        .sync_fs        = ufs_sync_fs,
         .statfs         = ufs_statfs,
         .remount_fs     = ufs_remount,
         .show_options   = ufs_show_options,