AcoSail/kernel_optimize_test
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VFS: Uninline the function put_mnt_ns()

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In order to allow modules to use it without having to export vfsmount_lock.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Trond Myklebust 2009-06-22 15:09:13 -04:00 committed by Linus Torvalds
parent 31950eb66f
commit 616511d039
2 changed files with 7 additions and 10 deletions
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8
fs/namespace.c
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@ -2246,10 +2246,14 @@ void __init mnt_init(void)
init_mount_tree(); init_mount_tree();
} }
void __put_mnt_ns(struct mnt_namespace *ns) void put_mnt_ns(struct mnt_namespace *ns)
{ {
struct vfsmount *root = ns->root; struct vfsmount *root;
LIST_HEAD(umount_list); LIST_HEAD(umount_list);
if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
return;
root = ns->root;
ns->root = NULL; ns->root = NULL;
spin_unlock(&vfsmount_lock); spin_unlock(&vfsmount_lock);
down_write(&namespace_sem); down_write(&namespace_sem);

9
include/linux/mnt_namespace.h
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@ -26,14 +26,7 @@ struct fs_struct;
extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *, extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
struct fs_struct *); struct fs_struct *);
extern void __put_mnt_ns(struct mnt_namespace *ns); extern void put_mnt_ns(struct mnt_namespace *ns);
static inline void put_mnt_ns(struct mnt_namespace *ns)
{
if (atomic_dec_and_lock(&ns->count, &vfsmount_lock))
/* releases vfsmount_lock */
__put_mnt_ns(ns);
}
static inline void exit_mnt_ns(struct task_struct *p) static inline void exit_mnt_ns(struct task_struct *p)
{ {