Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 17 Jan 2020 11:20:17 -0800 | Subject | Re: Performance regression introduced by commit b667b8673443 ("pipe: Advance tail pointer inside of wait spinlock in pipe_read()") |
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On Fri, Jan 17, 2020 at 10:11 AM Waiman Long <longman@redhat.com> wrote: > > I built a make with the lastest make git tree and the problem was gone > with the new make. So it was a bug in make not the kernel. Sorry for the > noise.
I think I spent about three days trying to figure it out. At least it felt that way. I looked at the pipe code a _lot_, also blaming the kernel for obvious reasons.
Linus
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