namei: make set_root_rcu() return void

The only caller that cares about its return value can just
as easily pick it from nd->root_seq itself.  We used to just
calculate it and return to caller, but these days we are
storing it in nd->root_seq in all cases.

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

diff --git a/fs/namei.c b/fs/namei.c
index 2dad0eaf91d34d8f47d3cc525eafd45107d429bd..ae4e4c18b2ac0b2c366f893f7ffa4d898446c0f7 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -792,7 +792,7 @@ static void set_root(struct nameidata *nd)
        get_fs_root(current->fs, &nd->root);
 }
 
-static unsigned set_root_rcu(struct nameidata *nd)
+static void set_root_rcu(struct nameidata *nd)
 {
        struct fs_struct *fs = current->fs;
        unsigned seq;
@@ -802,7 +802,6 @@ static unsigned set_root_rcu(struct nameidata *nd)
                nd->root = fs->root;
                nd->root_seq = __read_seqcount_begin(&nd->root.dentry->d_seq);
        } while (read_seqcount_retry(&fs->seq, seq));
-       return nd->root_seq;
 }
 
 static void path_put_conditional(struct path *path, struct nameidata *nd)
@@ -1998,7 +1997,8 @@ static const char *path_init(struct nameidata *nd, unsigned flags)
        if (*s == '/') {
                if (flags & LOOKUP_RCU) {
                        rcu_read_lock();
-                       nd->seq = set_root_rcu(nd);
+                       set_root_rcu(nd);
+                       nd->seq = nd->root_seq;
                } else {
                        set_root(nd);
                        path_get(&nd->root);