On Thu, 4/19/18, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > https://bugzilla.kernel.org/show_bug.cgi?id=196157 > > People are still hurting from this. It does seem a pretty major > regression for highmem machines. > > I'm surprised that we aren't hearing about this from distros. Maybe it > only affects a subset of highmem machines? Supposition: it would only affect distros with a given glibc version (my affected machines run glibc v2.13) ? Please, also take note that I encountered this bug on the 64 bits flavor of the same distro (Rosa 2012), on 64 bits capable machines, with Linux v4.2+ and until Linux v4.8.4 was released (and another interesting fact is that another 64 bits distro one the same machines was not affected at all by that bug, which would reinforce my suspicion about a glibc-triggered and glibc-version-dependent bug). > Anyway, can we please take another look at it? Seems that we messed up > highmem dirty pagecache handling in the 4.2 timeframe. Oh, yes, please, do have a look ! :-D In the mean time, could you guys also consider extending the lifetime of the v4.1 kernel until this ***showstopper*** bug is resolved in the mainline kernel version ? Many (many, many, many) thanks in advance !
