Commits
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: make sure reserve_metadata_bytes doesn't leak out strange errors Btrfs: use the commit_root for reading free_space_inode crcs Btrfs: reduce extent_state lock contention for metadata Btrfs: remove lockdep magic from btrfs_next_leaf Btrfs: make a lockdep class for each root Btrfs: switch the btrfs tree locks to reader/writer Btrfs: fix deadlock when throttling transactions Btrfs: stop using highmem for extent_buffers Btrfs: fix BUG_ON() caused by ENOSPC when relocating space Btrfs: tag pages for writeback in sync Btrfs: fix enospc problems with delalloc Btrfs: don't flush delalloc arbitrarily Btrfs: use find_or_create_page instead of grab_cache_page Btrfs: use a worker thread to do caching Btrfs: fix how we merge extent states and deal with cached states Btrfs: use the normal checksumming infrastructure for free space cache Btrfs: serialize flushers in reserve_metadata_bytes Btrfs: do transaction space reservation before joining the transaction Btrfs: try to only do one btrfs_search_slot in do_setxattr