On Tue, Sep 20, 2022 at 02:25:40PM +0200, David Sterba wrote: > On Mon, Sep 12, 2022 at 12:27:40PM -0700, Stefan Roesch wrote: > > This patch series adds support for async buffered writes when using both > > btrfs and io-uring. Currently io-uring only supports buffered writes (for btrfs) > > in the slow path, by processing them in the io workers. With this patch series > > it is now possible to support buffered writes in the fast path. To be able to use > > the fast path, the required pages must be in the page cache, the required locks > > in btrfs can be granted immediately and no additional blocks need to be read > > form disk. > > > > This patch series makes use of the changes that have been introduced by a > > previous patch series: "io-uring/xfs: support async buffered writes" > > > > Performance results: > > > > The new patch improves throughput by over two times (compared to the exiting > > behavior, where buffered writes are processed by an io-worker process) and also > > the latency is considerably reduced. Detailled results are part of the changelog > > of the first commit. > > Thanks. It's late for including this patches to 6.1 queue but it's now > in for-next and will be added to misc-next after rc1, targeting merge to > 6.2. I did some minor fixups, so please don't resend full series unless > there's a significant change. Incremental changes are fine if needed. I'm revisiting the merge target, the potential risk seems to be low here, straightforward changes for a separate feature, so it's now in the 6.1 queue. We still don't have ack for the function export so that would be good to have.
