On Wed, Jul 26, 2023 at 05:07:57PM -0600, Jens Axboe wrote: > On 7/24/23 4:55?PM, Jens Axboe wrote: > > Hi, > > > > Hi, > > > > This patchset improves async iomap DIO performance, for XFS and ext4. > > For full details on this patchset, see the v4 posting: > > > > https://lore.kernel.org/io-uring/20230720181310.71589-1-axboe@xxxxxxxxx/ > > > > fs/iomap/direct-io.c | 163 ++++++++++++++++++++++++++++++++----------- > > include/linux/fs.h | 35 +++++++++- > > io_uring/rw.c | 26 ++++++- > > 3 files changed, 179 insertions(+), 45 deletions(-) > > > > Can also be found here: > > > > https://git.kernel.dk/cgit/linux/log/?h=xfs-async-dio.6 > > > > No change in performance since last time, and passes my testing without > > complaints. > > > > Changes in v6: > > - Drop the polled patch, it's not needed anymore > > - Change the "inline is safe" logic based on Dave's suggestions > > - Gate HIPRI on INLINE_COMP|CALLER_COMP, so polled IO follows the > > same rules as inline/deferred completions. > > - INLINE_COMP is purely for reads, writes can user CALLER_COMP to > > avoid a workqueue punt. This is necessary as we need to invalidate > > pages on write completions, and if we race with a buffered reader > > or writer on the file. > > Dave, are you happy with this one? I haven't had a chance to look at it yet. Had my head in log hang bug reports these last few days... -Dave. -- Dave Chinner david@xxxxxxxxxxxxx
