Here is v2 of the compressed path cleanups. The main objective was to remove
the BUG_ON in cow_file_range_async. This has been achieved by pre-allocating
an array large enough to hold all async_cow structs for the given range. In
case this allocation fail we just unlock the range and error out the pages.
Changes since v1:
* Fixed error handling in patch 1 - now properly cleanup on failure.
* Fixed subject of patch 3
* Added patches 4/5 as minor cleanups to the code.
Nikolay Borisov (6):
btrfs: Refactor cow_file_range_async
btrfs: Remove fs_info from struct async_cow
btrfs: Make compress_file_range take only struct async_cow
btrfs: Replace clear_extent_bit with unlock_extent
btrfs: Set iotree only once in submit_compressed_extents
btrfs: Factor out common extent locking code in
submit_compressed_extents
fs/btrfs/inode.c | 129 +++++++++++++++++++++++++++--------------------
1 file changed, 73 insertions(+), 56 deletions(-)
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2.17.1
