Date: Mon, 2 Jun 2014 20:23:42 +0000 (UTC) From: Benjamin Kaduk <bjk@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r266982 - stable/9/lib/libc/sys Message-ID: <201406022023.s52KNg87007183@svn.freebsd.org>
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Author: bjk (doc committer) Date: Mon Jun 2 20:23:41 2014 New Revision: 266982 URL: http://svnweb.freebsd.org/changeset/base/266982 Log: MFC r266285,266866: ------------------------------------------------------------------------ r266285 | bjk | 2014-05-16 23:05:52 -0400 (Fri, 16 May 2014) | 9 lines Correct documentation of the limit on how much memory can be mlock()ed vm.max_wired is a system-wide limit, not per-process. Reword the section to make this more clear. PR: docs/189214 Submitted by: Lawrence Chen (original text) Approved by: hrs (mentor) ------------------------------------------------------------------------ r266866 | bjk | 2014-05-29 22:16:28 -0400 (Thu, 29 May 2014) | 5 lines Minor mdoc fix Submitted by: hrs Approved by: hrs (mentor, implicit) ------------------------------------------------------------------------ PR: 189214 Approved by: re (gjb), hrs (mentor) Modified: stable/9/lib/libc/sys/mlock.2 Directory Properties: stable/9/lib/libc/ (props changed) stable/9/lib/libc/sys/ (props changed) Modified: stable/9/lib/libc/sys/mlock.2 ============================================================================== --- stable/9/lib/libc/sys/mlock.2 Mon Jun 2 19:53:53 2014 (r266981) +++ stable/9/lib/libc/sys/mlock.2 Mon Jun 2 20:23:41 2014 (r266982) @@ -28,7 +28,7 @@ .\" @(#)mlock.2 8.2 (Berkeley) 12/11/93 .\" $FreeBSD$ .\" -.Dd March 18, 2013 +.Dd May 17, 2014 .Dt MLOCK 2 .Os .Sh NAME @@ -91,14 +91,21 @@ Locked mappings are not inherited by the .Pp Since physical memory is a potentially scarce resource, processes are limited in how much they can lock down. -A single process can +The amount of memory that a single process can .Fn mlock -the minimum of -a system-wide ``wired pages'' limit +is limited by both the per-process +.Dv RLIMIT_MEMLOCK +resource limit and the +system-wide +.Dq wired pages +limit +.Va vm.max_wired . .Va vm.max_wired -and the per-process -.Li RLIMIT_MEMLOCK -resource limit. +applies to the system as a whole, so the amount available to a single +process at any given time is the difference between +.Va vm.max_wired +and +.Va vm.stats.vm.v_wire_count . .Pp If .Va security.bsd.unprivileged_mlock
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