new helper: iterate_supers()

[mirror_ubuntu-hirsute-kernel.git] / fs / sync.c

diff --git a/fs/sync.c b/fs/sync.c
index f3f0a0e1948f0eb87389af19376dddf19c9c17b3..d5369203f8e46bda1cb18336517091862eb98bce 100644 (file)
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -77,31 +77,18 @@ int sync_filesystem(struct super_block *sb)
 }
 EXPORT_SYMBOL_GPL(sync_filesystem);
 
+static void sync_one_sb(struct super_block *sb, void *arg)
+{
+       if (!(sb->s_flags & MS_RDONLY) && sb->s_bdi)
+               __sync_filesystem(sb, *(int *)arg);
+}
 /*
  * Sync all the data for all the filesystems (called by sys_sync() and
  * emergency sync)
  */
 static void sync_filesystems(int wait)
 {
-       struct super_block *sb, *n;
-
-       spin_lock(&sb_lock);
-       list_for_each_entry_safe(sb, n, &super_blocks, s_list) {
-               if (list_empty(&sb->s_instances))
-                       continue;
-               sb->s_count++;
-               spin_unlock(&sb_lock);
-
-               down_read(&sb->s_umount);
-               if (!(sb->s_flags & MS_RDONLY) && sb->s_root && sb->s_bdi)
-                       __sync_filesystem(sb, wait);
-               up_read(&sb->s_umount);
-
-               /* restart only when sb is no longer on the list */
-               spin_lock(&sb_lock);
-               __put_super(sb);
-       }
-       spin_unlock(&sb_lock);
+       iterate_supers(sync_one_sb, &wait);
 }
 
 /*