[PATCH 2/9 v8] fs_pin: Export functions for specific filesystem

[Kinglong Mee <kinglongmee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Exports functions for others who want pin to vfsmount,
eg, nfsd's export cache.

v8, same as v4
add exporting of pin_kill.

Signed-off-by: Kinglong Mee <kinglongmee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 fs/fs_pin.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/fs_pin.c b/fs/fs_pin.c
index 611b540..a1a4eb2 100644
--- a/fs/fs_pin.c
+++ b/fs/fs_pin.c
@@ -17,6 +17,7 @@ void pin_remove(struct fs_pin *pin)
 	wake_up_locked(&pin->wait);
 	spin_unlock_irq(&pin->wait.lock);
 }
+EXPORT_SYMBOL(pin_remove);
 
 void pin_insert_group(struct fs_pin *pin, struct vfsmount *m, struct hlist_head *p)
 {
@@ -26,11 +27,13 @@ void pin_insert_group(struct fs_pin *pin, struct vfsmount *m, struct hlist_head
 	hlist_add_head(&pin->m_list, &real_mount(m)->mnt_pins);
 	spin_unlock(&pin_lock);
 }
+EXPORT_SYMBOL(pin_insert_group);
 
 void pin_insert(struct fs_pin *pin, struct vfsmount *m)
 {
 	pin_insert_group(pin, m, &m->mnt_sb->s_pins);
 }
+EXPORT_SYMBOL(pin_insert);
 
 void pin_kill(struct fs_pin *p)
 {
@@ -72,6 +75,7 @@ void pin_kill(struct fs_pin *p)
 	}
 	rcu_read_unlock();
 }
+EXPORT_SYMBOL(pin_kill);
 
 void mnt_pin_kill(struct mount *m)
 {
-- 
2.4.3

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