tracing: Allow events to have NULL strings

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / mount.h

diff --git a/fs/mount.h b/fs/mount.h
index 7076f25..d64c594 100644 (file)
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -1,7 +1,6 @@
 #include <linux/mount.h>
 #include <linux/seq_file.h>
 #include <linux/poll.h>
-#include <linux/lglock.h>
 
 struct mnt_namespace {
        atomic_t                count;
@@ -30,6 +29,7 @@ struct mount {
        struct mount *mnt_parent;
        struct dentry *mnt_mountpoint;
        struct vfsmount mnt;
+       struct rcu_head mnt_rcu;
 #ifdef CONFIG_SMP
        struct mnt_pcp __percpu *mnt_pcp;
 #else
@@ -77,23 +77,26 @@ static inline int is_mounted(struct vfsmount *mnt)
        return !IS_ERR_OR_NULL(real_mount(mnt));
 }
 
-extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
+extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *);
+extern struct mount *__lookup_mnt_last(struct vfsmount *, struct dentry *);
+
+extern bool legitimize_mnt(struct vfsmount *, unsigned);
 
 static inline void get_mnt_ns(struct mnt_namespace *ns)
 {
        atomic_inc(&ns->count);
 }
 
-extern struct lglock vfsmount_lock;
+extern seqlock_t mount_lock;
 
 static inline void lock_mount_hash(void)
 {
-       br_write_lock(&vfsmount_lock);
+       write_seqlock(&mount_lock);
 }
 
 static inline void unlock_mount_hash(void)
 {
-       br_write_unlock(&vfsmount_lock);
+       write_sequnlock(&mount_lock);
 }
 
 struct proc_mounts {