[PATCH 00/13] btrfs: fixes and cleanups around extent maps

[fdmanana@kernel.org]

From: Filipe Manana <fdmanana@suse.com>

The following patchset fixes a bug related to dropping extent maps that
can make an fsync miss a new extent, does several cleanups and some
small performance improvements when dropping and searching for extent
maps as well as when flushing delalloc in COW mode. These came out while
working on some upcoming changes for fiemap, but since they are really
independent, I'm sending them as a separate patchset.
The last patch in the series has a test and results in its changelog.

Filipe Manana (13):
  btrfs: fix missed extent on fsync after dropping extent maps
  btrfs: move btrfs_drop_extent_cache() to extent_map.c
  btrfs: use extent_map_end() at btrfs_drop_extent_map_range()
  btrfs: use cond_resched_rwlock_write() during inode eviction
  btrfs: move open coded extent map tree deletion out of inode eviction
  btrfs: add helper to replace extent map range with a new extent map
  btrfs: remove the refcount warning/check at free_extent_map()
  btrfs: remove unnecessary extent map initializations
  btrfs: assert tree is locked when clearing extent map from logging
  btrfs: remove unnecessary NULL pointer checks when searching extent maps
  btrfs: remove unnecessary next extent map search
  btrfs: avoid pointless extent map tree search when flushing delalloc
  btrfs: drop extent map range more efficiently

 fs/btrfs/ctree.h             |   2 -
 fs/btrfs/extent_map.c        | 343 ++++++++++++++++++++++++++++++++---
 fs/btrfs/extent_map.h        |   8 +
 fs/btrfs/file.c              | 184 ++-----------------
 fs/btrfs/free-space-cache.c  |   2 +-
 fs/btrfs/inode.c             | 101 +++--------
 fs/btrfs/relocation.c        |  20 +-
 fs/btrfs/tests/inode-tests.c |   2 +-
 8 files changed, 373 insertions(+), 289 deletions(-)

-- 
2.35.1