Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs changes from Al Viro.
 "A lot of misc stuff.  The obvious groups:
   * Miklos' atomic_open series; kills the damn abuse of
     ->d_revalidate() by NFS, which was the major stumbling block for
     all work in that area.
   * ripping security_file_mmap() and dealing with deadlocks in the
     area; sanitizing the neighborhood of vm_mmap()/vm_munmap() in
     general.
   * ->encode_fh() switched to saner API; insane fake dentry in
     mm/cleancache.c gone.
   * assorted annotations in fs (endianness, __user)
   * parts of Artem's ->s_dirty work (jff2 and reiserfs parts)
   * ->update_time() work from Josef.
   * other bits and pieces all over the place.

  Normally it would've been in two or three pull requests, but
  signal.git stuff had eaten a lot of time during this cycle ;-/"

Fix up trivial conflicts in Documentation/filesystems/vfs.txt (the
'truncate_range' inode method was removed by the VM changes, the VFS
update adds an 'update_time()' method), and in fs/btrfs/ulist.[ch] (due
to sparse fix added twice, with other changes nearby).

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (95 commits)
  nfs: don't open in ->d_revalidate
  vfs: retry last component if opening stale dentry
  vfs: nameidata_to_filp(): don't throw away file on error
  vfs: nameidata_to_filp(): inline __dentry_open()
  vfs: do_dentry_open(): don't put filp
  vfs: split __dentry_open()
  vfs: do_last() common post lookup
  vfs: do_last(): add audit_inode before open
  vfs: do_last(): only return EISDIR for O_CREAT
  vfs: do_last(): check LOOKUP_DIRECTORY
  vfs: do_last(): make ENOENT exit RCU safe
  vfs: make follow_link check RCU safe
  vfs: do_last(): use inode variable
  vfs: do_last(): inline walk_component()
  vfs: do_last(): make exit RCU safe
  vfs: split do_lookup()
  Btrfs: move over to use ->update_time
  fs: introduce inode operation ->update_time
  reiserfs: get rid of resierfs_sync_super
  reiserfs: mark the superblock as dirty a bit later
  ...

1 files changed, 10 insertions, 12 deletions

diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 0bb2c2010b95..b72847988b78 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -508,31 +508,29 @@ static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh,
         return nilfs_get_dentry(sb, fid->cno, fid->parent_ino, fid->parent_gen);
 }
 
-static int nilfs_encode_fh(struct dentry *dentry, __u32 *fh, int *lenp,
-                           int connectable)
+static int nilfs_encode_fh(struct inode *inode, __u32 *fh, int *lenp,
+                           struct inode *parent)
 {
         struct nilfs_fid *fid = (struct nilfs_fid *)fh;
-        struct inode *inode = dentry->d_inode;
         struct nilfs_root *root = NILFS_I(inode)->i_root;
         int type;
 
-        if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE ||
-            (connectable && *lenp < NILFS_FID_SIZE_CONNECTABLE))
+        if (parent && *lenp < NILFS_FID_SIZE_CONNECTABLE) {
+                *lenp = NILFS_FID_SIZE_CONNECTABLE;
+                return 255;
+        }
+        if (*lenp < NILFS_FID_SIZE_NON_CONNECTABLE) {
+                *lenp = NILFS_FID_SIZE_NON_CONNECTABLE;
                 return 255;
+        }
 
         fid->cno = root->cno;
         fid->ino = inode->i_ino;
         fid->gen = inode->i_generation;
 
-        if (connectable && !S_ISDIR(inode->i_mode)) {
-                struct inode *parent;
-
-                spin_lock(&dentry->d_lock);
-                parent = dentry->d_parent->d_inode;
+        if (parent) {
                 fid->parent_ino = parent->i_ino;
                 fid->parent_gen = parent->i_generation;
-                spin_unlock(&dentry->d_lock);
-
                 type = FILEID_NILFS_WITH_PARENT;
                 *lenp = NILFS_FID_SIZE_CONNECTABLE;
         } else {