lkml.org 
[lkml]   [2001]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: VM subsystem bug in 2.4.0 ?
Date
Hi Stephen,

On Tue, 9 Jan 2001, Stephen C. Tweedie wrote:
> But again, how do you clear the bit? Locking is a per-vma property,
> not per-page. I can mmap a file twice and mlock just one of the
> mappings. If you get a munlock(), how are you to know how many
> other locked mappings still exist?

It's worse: The issue we are talking about is SYSV IPC_LOCK. This is a
per segment thing. A user can (un)lock a segment at any time. But we
do not have the references to the vmas attached to the segemnts or to
the pages allocated.

Greetings
Christoph

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:52    [W:0.155 / U:0.012 seconds]
©2003-2014 Jasper Spaans. Advertise on this site