[PATCH] severing fs.h, radix-tree.h -> sched.h

[deliverable/linux.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index 47e554c12e768bc0c5b0ad10b10d3a3a92a90e46..84c320f6ad7e39471277c581476860caded889e9 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -220,6 +220,24 @@ static int grab_super(struct super_block *s) __releases(sb_lock)
        return 0;
 }
 
+/*
+ * Superblock locking.  We really ought to get rid of these two.
+ */
+void lock_super(struct super_block * sb)
+{
+       get_fs_excl();
+       mutex_lock(&sb->s_lock);
+}
+
+void unlock_super(struct super_block * sb)
+{
+       put_fs_excl();
+       mutex_unlock(&sb->s_lock);
+}
+
+EXPORT_SYMBOL(lock_super);
+EXPORT_SYMBOL(unlock_super);
+
 /*
  * Write out and wait upon all dirty data associated with this
  * superblock.  Filesystem data as well as the underlying block