reduce m_start() cost...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/mount.h b/fs/mount.h
index b29e42f..d55297f 100644 (file)
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -10,7 +10,7 @@ struct mnt_namespace {
        struct user_namespace   *user_ns;
        u64                     seq;    /* Sequence number to prevent loops */
        wait_queue_head_t poll;
-       int event;
+       u64 event;
 };
 
 struct mnt_pcp {
@@ -104,6 +104,9 @@ struct proc_mounts {
        struct mnt_namespace *ns;
        struct path root;
        int (*show)(struct seq_file *, struct vfsmount *);
+       void *cached_mount;
+       u64 cached_event;
+       loff_t cached_index;
 };
 
 #define proc_mounts(p) (container_of((p), struct proc_mounts, m))

diff --cc fs/namespace.c
Simple merge

diff --cc fs/proc_namespace.c
Simple merge