Date: Thu, 23 Apr 2015 21:53:19 +0200 From: Antoine Brodin <antoine@FreeBSD.org> To: Will Andrews <will@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r281442 - head/sys/kern Message-ID: <CAALwa8nC7NODNT5P9pqgKs5Ca8tbtAecDbYmz==UPKRm2e7kyw@mail.gmail.com> In-Reply-To: <201504111851.t3BIpgRS071392@svn.freebsd.org> References: <201504111851.t3BIpgRS071392@svn.freebsd.org>
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On Sat, Apr 11, 2015 at 8:51 PM, Will Andrews <will@freebsd.org> wrote: > Author: will > Date: Sat Apr 11 18:51:41 2015 > New Revision: 281442 > URL: https://svnweb.freebsd.org/changeset/base/281442 > > Log: > uiomove_object_page(): Avoid instantiating pages in sparse regions on reads. > > Check whether the page being requested is either resident or on swap. If > not, read from the zero_region instead of instantiating an unnecessary page. > > This avoids consuming memory for sparse files on tmpfs, when they are read > by applications that do not use SEEK_HOLE/SEEK_DATA (which is most of them). > > Reviewed by: kib > MFC after: 1 week > Sponsored by: Spectra Logic Hi, We have a daily panic on one of the package builders: https://reviews.freebsd.org/P60 Reverting this commit seems to fix the panic. Cheers, Antoine
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