vfs: kill write_super and sync_supers

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index b05cf47463d0c2347e8eca1597001f96dd2a97fc..0902cfa6a12efd21e4ebd52a39333b7f9d6270eb 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -536,46 +536,6 @@ void drop_super(struct super_block *sb)
 
 EXPORT_SYMBOL(drop_super);
 
-/**
- * sync_supers - helper for periodic superblock writeback
- *
- * Call the write_super method if present on all dirty superblocks in
- * the system.  This is for the periodic writeback used by most older
- * filesystems.  For data integrity superblock writeback use
- * sync_filesystems() instead.
- *
- * Note: check the dirty flag before waiting, so we don't
- * hold up the sync while mounting a device. (The newly
- * mounted device won't need syncing.)
- */
-void sync_supers(void)
-{
-       struct super_block *sb, *p = NULL;
-
-       spin_lock(&sb_lock);
-       list_for_each_entry(sb, &super_blocks, s_list) {
-               if (hlist_unhashed(&sb->s_instances))
-                       continue;
-               if (sb->s_op->write_super && sb->s_dirt) {
-                       sb->s_count++;
-                       spin_unlock(&sb_lock);
-
-                       down_read(&sb->s_umount);
-                       if (sb->s_root && sb->s_dirt && (sb->s_flags & MS_BORN))
-                               sb->s_op->write_super(sb);
-                       up_read(&sb->s_umount);
-
-                       spin_lock(&sb_lock);
-                       if (p)
-                               __put_super(p);
-                       p = sb;
-               }
-       }
-       if (p)
-               __put_super(p);
-       spin_unlock(&sb_lock);
-}
-
 /**
  *     iterate_supers - call function for all active superblocks
  *     @f: function to call