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vfs: drop lock/unlock super

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Removed s_lock from super_block and removed lock/unlock super.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Marco Stornelli 2012-10-06 12:43:09 +02:00 committed by Al Viro
parent b6963327e0
commit 8e22cc88d6
2 changed files with 0 additions and 24 deletions
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23
fs/super.c
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@ -186,14 +186,7 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
spin_lock_init(&s->s_inode_lru_lock); spin_lock_init(&s->s_inode_lru_lock);
INIT_LIST_HEAD(&s->s_mounts); INIT_LIST_HEAD(&s->s_mounts);
init_rwsem(&s->s_umount); init_rwsem(&s->s_umount);
mutex_init(&s->s_lock);
lockdep_set_class(&s->s_umount, &type->s_umount_key); 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. * sget() can have s_umount recursion.
* *
@ -394,22 +387,6 @@ bool grab_super_passive(struct super_block *sb)
return false; 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() * generic_shutdown_super - common helper for ->kill_sb()
* @sb: superblock to kill * @sb: superblock to kill

1
include/linux/fs.h
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@ -1507,7 +1507,6 @@ struct super_block {
unsigned long s_magic; unsigned long s_magic;
struct dentry *s_root; struct dentry *s_root;
struct rw_semaphore s_umount; struct rw_semaphore s_umount;
struct mutex s_lock;
int s_count; int s_count;
atomic_t s_active; atomic_t s_active;
#ifdef CONFIG_SECURITY #ifdef CONFIG_SECURITY