From: Jeff Dike <jdike@karaya.com>
To: Tim Walberg <twalberg@mindspring.com>
Cc: Christopher Friesen <cfriesen@nortelnetworks.com>
Cc: Brian Gerst <bgerst@didntduck.org>,
Cyrille Beraud <cyrille.beraud@savoirfairelinux.com>,
linux-kernel@vger.kernel.org
Subject: Re: Removing an executable while it runs
Date: Wed, 05 Dec 2001 19:25:35 -0500 [thread overview]
Message-ID: <200112060025.TAA04538@ccure.karaya.com> (raw)
In-Reply-To: Your message of "Wed, 05 Dec 2001 14:54:42 CST." <20011205145442.A12034@mindspring.com>
twalberg@mindspring.com said:
> mlockall() only locks those pages that are **currently** paged in, or
> optionally those that will be paged in in the future. Unless you have
> a way to make sure that all pages of the binary are actually in memory
> before you call mlockall(), this gains you nothing.
No, mlockall will page in the entire process before returning if you ask it to.
See this snippet in mlock_fixup:
if (newflags & VM_LOCKED) {
pages = -pages;
make_pages_present(start, end);
}
VM_LOCKED comes in through the mlockall system call.
Jeff
next prev parent reply other threads:[~2001-12-05 23:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-05 16:00 Removing an executable while it runs Cyrille Beraud
2001-12-05 16:14 ` Brian Gerst
2001-12-05 20:00 ` Christopher Friesen
2001-12-05 20:54 ` Tim Walberg
2001-12-06 0:25 ` Jeff Dike [this message]
2001-12-06 15:43 ` Eric-Olivier Lamey
-- strict thread matches above, loose matches on Subject: below --
2001-12-05 17:15 Petr Vandrovec
2001-12-05 19:32 ` Mike Fedyk
2001-12-05 21:19 Petr Vandrovec
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