From: Marcelo Tosatti <marcelo@conectiva.com.br>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Mike Galbraith <mikeg@wen-online.de>,
Linus Torvalds <torvalds@transmeta.com>,
Shawn Starr <spstarr@sh0n.net>,
lkm <linux-kernel@vger.kernel.org>
Subject: Re: [ANOMALIES]: 2.4.2 - __alloc_pages: failed - Patch failed
Date: Mon, 26 Feb 2001 07:24:35 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.21.0102260610030.5276-100000@freak.distro.conectiva> (raw)
In-Reply-To: <E14XJvZ-0000rF-00@the-village.bc.nu>
On Mon, 26 Feb 2001, Alan Cox wrote:
> > We can add an allocation flag (__GFP_NO_CRITICAL?) which can be used by
> > sg_low_malloc() (and other non critical allocations) to fail previously
> > and not print the message.
>
> It is just for debugging. The message can go. If anytbing it would be more
> useful to tack Failed alloc data on the end of /proc/slabinfo
The issue is not the warn message.
Non critical allocations (such as this case of sg_low_malloc()) are trying
to get additional memory to optimize things -- we want the allocator to be
lazy and fail previously instead doing hard work. If kswapd cannot keep up
with the memory pressure, we're surely in a memory shortage state.
Its better to get out of the memory shortage instead running into OOM
because of some optimization, I guess.
Another example of such a flag is swapin readahead.
next prev parent reply other threads:[~2001-02-26 14:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.33.0102250725180.1864-100000@mikeg.weiden.de>
2001-02-25 6:35 ` [ANOMALIES]: 2.4.2 - __alloc_pages: failed - Patch failed Shawn Starr
2001-02-25 8:03 ` Mike Galbraith
2001-02-25 23:13 ` Shawn Starr
2001-02-26 3:42 ` Marcelo Tosatti
2001-02-26 9:26 ` Alan Cox
2001-02-26 10:24 ` Marcelo Tosatti [this message]
2001-02-27 2:19 ` [ANOMALIES]: 2.4.2 - __alloc_pages: failed - Causes more then just msgs Shawn Starr
2001-02-27 10:08 ` Mike Galbraith
2001-02-27 21:52 ` Shawn Starr
2001-02-28 5:25 ` Mike Galbraith
[not found] <Pine.LNX.4.33.0102231409010.496-100000@mikeg.weiden.de>
2001-02-23 21:11 ` [ANOMALIES]: 2.4.2 - __alloc_pages: failed & mount hanging withloop device issues Shawn Starr
2001-02-24 2:18 ` [ANOMALIES]: 2.4.2 - __alloc_pages: failed - Patch failed Shawn Starr
2001-02-24 16:01 ` Marcelo Tosatti
2001-02-24 22:31 ` Shawn Starr
2001-02-24 21:43 ` Arnaldo Carvalho de Melo
2001-02-25 5:36 ` Mike Galbraith
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