[PATCH] splice exports

[pandora-kernel.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index 98dc2e1..22f6e8d 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -546,6 +546,22 @@ struct path {
        struct dentry *dentry;
 };
 
+static inline void dput_path(struct path *path, struct nameidata *nd)
+{
+       dput(path->dentry);
+       if (path->mnt != nd->mnt)
+               mntput(path->mnt);
+}
+
+static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
+{
+       dput(nd->dentry);
+       if (nd->mnt != path->mnt)
+               mntput(nd->mnt);
+       nd->mnt = path->mnt;
+       nd->dentry = path->dentry;
+}
+
 static __always_inline int __do_follow_link(struct path *path, struct nameidata *nd)
 {
        int error;
@@ -555,8 +571,11 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
        touch_atime(path->mnt, dentry);
        nd_set_link(nd, NULL);
 
-       if (path->mnt == nd->mnt)
-               mntget(path->mnt);
+       if (path->mnt != nd->mnt) {
+               path_to_nameidata(path, nd);
+               dget(dentry);
+       }
+       mntget(path->mnt);
        cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
        error = PTR_ERR(cookie);
        if (!IS_ERR(cookie)) {
@@ -573,22 +592,6 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
        return error;
 }
 
-static inline void dput_path(struct path *path, struct nameidata *nd)
-{
-       dput(path->dentry);
-       if (path->mnt != nd->mnt)
-               mntput(path->mnt);
-}
-
-static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
-{
-       dput(nd->dentry);
-       if (nd->mnt != path->mnt)
-               mntput(nd->mnt);
-       nd->mnt = path->mnt;
-       nd->dentry = path->dentry;
-}
-
 /*
  * This limits recursive symlink follows to 8, while
  * limiting consecutive symlinks to 40.