Hello Matthew! Any resolution on this? I'd like to move this further... Honza On Tue 04-02-20 15:25:06, Jan Kara wrote: > Hello, > > conversion of page cache to xarray (commit 69b6c1319b6 "mm: Convert truncate to > XArray" in particular) has regressed performance of page cache truncation > by about 10% (see my original report here [1]). This patch series aims at > improving the truncation to get some of that regression back. > > The first patch fixes a long standing bug with xas_for_each_marked() that I've > uncovered when debugging my patches. The remaining patches then work towards > the ability to stop clearing marks in xas_store() which improves truncation > performance by about 6%. > > The patches have passed radix_tree tests in tools/testing and also fstests runs > for ext4 & xfs. > > Honza > > [1] https://lore.kernel.org/linux-mm/20190226165628.GB24711@xxxxxxxxxxxxxx -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
