Hello Mateusz, On Wed, Jun 17, 2026 at 04:37:24PM +0200, Oleg Nesterov wrote: > On 06/17, Mateusz Guzik wrote: > > > > There are trivial touch ups which can be done by adding a bunch of > > predicts and inlining kill_fasync if someone can be bothered. > > I was thinking about another change, see below. It assumes that in the > likely case another writer won't steal the pages from ->tmp_page[] > before we take pipe->mutex.
Do you think we could eventually eliminate the tmp_page[] array and consolidate everything into the prealloc pages? That would unify the two page pools currently used in the pipe write path. When I examined this previously, it appeared non-trivial but potentially feasible. What is your view on it? Thanks, --breno
