linux-stable/include/linux/fs_pin.h
Al Viro 56cbb429d9 switch the remnants of releasing the mountpoint away from fs_pin
We used to need rather convoluted ordering trickery to guarantee
that dput() of ex-mountpoints happens before the final mntput()
of the same.  Since we don't need that anymore, there's no point
playing with fs_pin for that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-07-16 22:52:37 -04:00

24 lines
539 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/wait.h>
struct fs_pin {
wait_queue_head_t wait;
int done;
struct hlist_node s_list;
struct hlist_node m_list;
void (*kill)(struct fs_pin *);
};
struct vfsmount;
static inline void init_fs_pin(struct fs_pin *p, void (*kill)(struct fs_pin *))
{
init_waitqueue_head(&p->wait);
INIT_HLIST_NODE(&p->s_list);
INIT_HLIST_NODE(&p->m_list);
p->kill = kill;
}
void pin_remove(struct fs_pin *);
void pin_insert(struct fs_pin *, struct vfsmount *);
void pin_kill(struct fs_pin *);