Date: Mon, 8 Jan 2018 13:19:15 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r327695 - stable/11/sys/vm Message-ID: <201801081319.w08DJFZT078099@repo.freebsd.org>
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Author: kib Date: Mon Jan 8 13:19:15 2018 New Revision: 327695 URL: https://svnweb.freebsd.org/changeset/base/327695 Log: MFC r327468: Do not let vm_daemon run unbounded. Modified: stable/11/sys/vm/vm_swapout.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/vm/vm_swapout.c ============================================================================== --- stable/11/sys/vm/vm_swapout.c Mon Jan 8 12:56:53 2018 (r327694) +++ stable/11/sys/vm/vm_swapout.c Mon Jan 8 13:19:15 2018 (r327695) @@ -201,6 +201,8 @@ vm_swapout_object_deactivate_pages(pmap_t pmap, vm_obj TAILQ_FOREACH(p, &object->memq, listq) { if (pmap_resident_count(pmap) <= desired) goto unlock_return; + if (should_yield()) + goto unlock_return; if (vm_page_busied(p)) continue; PCPU_INC(cnt.v_pdpages); @@ -514,8 +516,10 @@ again: PRELE(p); } sx_sunlock(&allproc_lock); - if (tryagain != 0 && attempts <= 10) + if (tryagain != 0 && attempts <= 10) { + maybe_yield(); goto again; + } } }
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