From: Dave McCracken <dmccr@us.ibm.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Roland McGrath <roland@redhat.com>, Andrew Morton <akpm@osdl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] dump read-only anonymous memory in core files
Date: Tue, 07 Oct 2003 09:33:45 -0500 [thread overview]
Message-ID: <3120000.1065537225@baldur.austin.ibm.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0310070155110.1749-100000@home.osdl.org>
--On Tuesday, October 07, 2003 02:06:34 -0700 Linus Torvalds
<torvalds@osdl.org> wrote:
> What about shared mappings (that test should be VM_MAYSHARE)?
>
> My inclination would be to not dump them if they are backed by a file,
> even if the mmap is writable.
All shared areas are 'file backed' but some of them are only backed by
shmfs. I think we should at least dump those areas since they can't be
retrieved later. I agree it'd be reasonable to not dump areas backed by
real files, but it'd require a simple way to distinguish them from
shmfs-backed areas.
Dave McCracken
======================================================================
Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059
dmccr@us.ibm.com T/L 678-3059
next prev parent reply other threads:[~2003-10-07 14:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-07 8:28 Roland McGrath
2003-10-07 9:06 ` Linus Torvalds
2003-10-07 14:33 ` Dave McCracken [this message]
2003-10-07 19:07 ` Roland McGrath
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