From: Marco Stornelli <marco.stornelli@xxxxxxxxx>
Remove lock_super and unlock_super from VFS.
Signed-off-by: Marco Stornelli <marco.stornelli@xxxxxxxxx>
---
diff -Nurp linux-3.6-rc1-orig/fs/super.c linux-3.6-rc1/fs/super.c
--- linux-3.6-rc1-orig/fs/super.c 2012-08-16 09:37:35.000000000 +0200
+++ linux-3.6-rc1/fs/super.c 2012-08-16 09:43:46.000000000 +0200
@@ -186,15 +186,8 @@ static struct super_block *alloc_super(s
spin_lock_init(&s->s_inode_lru_lock);
INIT_LIST_HEAD(&s->s_mounts);
init_rwsem(&s->s_umount);
- mutex_init(&s->s_lock);
lockdep_set_class(&s->s_umount, &type->s_umount_key);
/*
- * The locking rules for s_lock are up to the
- * filesystem. For example ext3fs has different
- * lock ordering than usbfs:
- */
- lockdep_set_class(&s->s_lock, &type->s_lock_key);
- /*
* sget() can have s_umount recursion.
*
* When it cannot find a suitable sb, it allocates a new
@@ -400,22 +393,6 @@ bool grab_super_passive(struct super_blo
return false;
}
-/*
- * Superblock locking. We really ought to get rid of these two.
- */
-void lock_super(struct super_block * sb)
-{
- mutex_lock(&sb->s_lock);
-}
-
-void unlock_super(struct super_block * sb)
-{
- mutex_unlock(&sb->s_lock);
-}
-
-EXPORT_SYMBOL(lock_super);
-EXPORT_SYMBOL(unlock_super);
-
/**
* generic_shutdown_super - common helper for ->kill_sb()
* @sb: superblock to kill
diff -Nurp linux-3.6-rc1-orig/include/linux/fs.h linux-3.6-rc1/include/linux/fs.h
--- linux-3.6-rc1-orig/include/linux/fs.h 2012-08-16 11:38:42.000000000 +0200
+++ linux-3.6-rc1/include/linux/fs.h 2012-08-16 09:45:18.000000000 +0200
@@ -1504,7 +1504,6 @@ struct super_block {
unsigned long s_magic;
struct dentry *s_root;
struct rw_semaphore s_umount;
- struct mutex s_lock;
int s_count;
atomic_t s_active;
#ifdef CONFIG_SECURITY
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