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-rw-r--r--include/linux/mount.h13
1 files changed, 4 insertions, 9 deletions
diff --git a/include/linux/mount.h b/include/linux/mount.h
index f8f39937e301..ffb0b5089880 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -37,6 +37,7 @@ struct vfsmount
struct list_head mnt_list;
struct list_head mnt_expire; /* link in fs-specific expiry list */
struct namespace *mnt_namespace; /* containing namespace */
+ int mnt_pinned;
};
static inline struct vfsmount *mntget(struct vfsmount *mnt)
@@ -46,15 +47,9 @@ static inline struct vfsmount *mntget(struct vfsmount *mnt)
return mnt;
}
-extern void __mntput(struct vfsmount *mnt);
-
-static inline void mntput_no_expire(struct vfsmount *mnt)
-{
- if (mnt) {
- if (atomic_dec_and_test(&mnt->mnt_count))
- __mntput(mnt);
- }
-}
+extern void mntput_no_expire(struct vfsmount *mnt);
+extern void mnt_pin(struct vfsmount *mnt);
+extern void mnt_unpin(struct vfsmount *mnt);
static inline void mntput(struct vfsmount *mnt)
{