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MFC r266285,266866:

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    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)

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    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)

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PR:		docs/189214
Approved by:	hrs (mentor)
This commit is contained in:
bjk 2014-06-01 18:41:33 +00:00
parent aa8badda28
commit 5eb02565b3
1 changed files with 14 additions and 7 deletions
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21
lib/libc/sys/mlock.2
View File

@ -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 child process after a
.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