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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (114 commits)
  Btrfs: check for a null fs root when writing to the backup root log
  Btrfs: fix race during transaction joins
  Btrfs: fix a potential btrfs_bio leak on scrub fixups
  Btrfs: rename btrfs_bio multi -> bbio for consistency
  Btrfs: stop leaking btrfs_bios on readahead
  Btrfs: stop the readahead threads on failed mount
  Btrfs: fix extent_buffer leak in the metadata IO error handling
  Btrfs: fix the new inspection ioctls for 32 bit compat
  Btrfs: fix delayed insertion reservation
  Btrfs: ClearPageError during writepage and clean_tree_block
  Btrfs: be smarter about committing the transaction in reserve_metadata_bytes
  Btrfs: make a delayed_block_rsv for the delayed item insertion
  Btrfs: add a log of past tree roots
  btrfs: separate superblock items out of fs_info
  Btrfs: use the global reserve when truncating the free space cache inode
  Btrfs: release metadata from global reserve if we have to fallback for unlink
  Btrfs: make sure to flush queued bios if write_cache_pages waits
  Btrfs: fix extent pinning bugs in the tree log
  Btrfs: make sure btrfs_remove_free_space doesn't leak EAGAIN
  Btrfs: don't wait as long for more batches during SSD log commit
  ...

diff --cc fs/btrfs/delayed-inode.c
Simple merge

diff --cc fs/btrfs/disk-io.c
Simple merge

diff --cc fs/btrfs/extent-tree.c
index c9ee0e1,18ea90c..9879bd4
--- 1/fs/btrfs/extent-tree.c
--- 2/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@@ -3340,13 -3375,12 +3375,13 @@@ static int shrink_delalloc(struct btrfs
                smp_mb();
                nr_pages = min_t(unsigned long, nr_pages,
                       root->fs_info->delalloc_bytes >> PAGE_CACHE_SHIFT);
 -              writeback_inodes_sb_nr_if_idle(root->fs_info->sb, nr_pages);
 +              writeback_inodes_sb_nr_if_idle(root->fs_info->sb, nr_pages,
 +                                              WB_REASON_FS_FREE_SPACE);
  
                spin_lock(&space_info->lock);
-               if (reserved > space_info->bytes_reserved)
-                       reclaimed += reserved - space_info->bytes_reserved;
-               reserved = space_info->bytes_reserved;
+               if (reserved > space_info->bytes_may_use)
+                       reclaimed += reserved - space_info->bytes_may_use;
+               reserved = space_info->bytes_may_use;
                spin_unlock(&space_info->lock);
  
                loops++;

diff --cc fs/btrfs/file.c
Simple merge

diff --cc fs/btrfs/inode.c
Simple merge

diff --cc fs/btrfs/tree-log.c
Simple merge

diff --cc fs/btrfs/xattr.c
Simple merge