On Tue, Jan 28, 2020 at 12:59:26AM +0900, Johannes Thumshirn wrote: > This patch series removes the use of buffer_heads from btrfs' super block read > and write paths. It also converts the integrity-checking code to only work > with pages and BIOs. > > Compared to buffer heads, this gives us a leaner call path, as the > buffer_head code wraps around getting pages from the page-cache and adding > them to BIOs to submit. > > The first patch removes buffer_heads from superblock reading. The second > removes it from super_block writing and the subsequent patches remove the > buffer_heads from the integrity check code. > > It's based on misc-next from Wednesday January 22, and doesn't show any > regressions in xfstests to the baseline. > > Changes to v2: > - Removed patch #1 again > - Added Reviews from Josef > - Re-visited page locking, but not changes, it retains the same locking scheme > the buffer_heads had > - Incroptorated comments from David regarding open-coding functions > - For more details see the idividual patches. > > > Changes to v1: > - Added patch #1 > - Converted sb reading and integrity checking to use the page cache > - Added rationale behind the conversion to the commit messages. > - For more details see the idividual patches. > > > Johannes Thumshirn (5): > btrfs: remove buffer heads from super block reading > btrfs: remove use of buffer_heads from superblock writeout For next iteration, please change the subjects of the two patches to say "replace buffer heads with bio for superblock reading". Thanks.
