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

Pull btrfs fixes from Chris Mason:
 "The big ones here are a memory leak we introduced in rc1, and a
  scheduling while atomic if the transid on disk doesn't match the
  transid we expected.  This happens for corrupt blocks, or out of date
  disks.

  It also fixes up the ioctl definition for our ioctl to resolve logical
  inode numbers.  The __u32 was a merging error and doesn't match what
  we ship in the progs."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: avoid sleeping in verify_parent_transid while atomic
  Btrfs: fix crash in scrub repair code when device is missing
  btrfs: Fix mismatching struct members in ioctl.h
  Btrfs: fix page leak when allocing extent buffers
  Btrfs: Add properly locking around add_root_to_dirty_list

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 198c2ba2fa40..c9018a05036e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4120,6 +4120,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
                         if (atomic_inc_not_zero(&exists->refs)) {
                                 spin_unlock(&mapping->private_lock);
                                 unlock_page(p);
+                                page_cache_release(p);
                                 mark_extent_buffer_accessed(exists);
                                 goto free_eb;
                         }
@@ -4199,8 +4200,7 @@ free_eb:
                         unlock_page(eb->pages[i]);
         }
 
-        if (!atomic_dec_and_test(&eb->refs))
-                return exists;
+        WARN_ON(!atomic_dec_and_test(&eb->refs));
         btrfs_release_extent_buffer(eb);
         return exists;
 }