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From: Manfred Spraul <manfred@colorfullife.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Nathan Scott <nathans@sgi.com>,
	pinotj@club-internet.fr, torvalds@osdl.org,
	neilb@cse.unsw.edu.au, akpm@osdl.org,
	linux-kernel@vger.kernel.org
Subject: Re: [Oops]  i386 mm/slab.c (cache_flusharray)
Date: Fri, 12 Dec 2003 21:07:36 +0100	[thread overview]
Message-ID: <3FDA2008.9080504@colorfullife.com> (raw)
In-Reply-To: <20031212190002.GA21253@lst.de>

Christoph Hellwig wrote:

>Looks like whe're better of fixing mm/slab.c
>
Maybe I'm blind, but I don't see how kmem_cache_alloc can return NULL 
with __GFP_NOFAIL:
- kmem_cache_alloc calls __cache_alloc.
- cache_alloc only return 0 if cache_alloc_refill returns 0.
- cache_alloc_refill only return 0 if cache_grow returns 0.
- cache_grow only return 0 if
    * SLAB_NO_GROW is set in flags.
    * get_free_pages(flags) fails.
    * kmem_cache_alloc(flags&SLAB_LEVEL_MASK) fails.
       SLAB_LEVEL_MASK contains __GFP_NOFAIL.

--
    Manfred



  reply	other threads:[~2003-12-12 20:08 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-09  0:57 Re: [Oops] i386 mm/slab.c (cache_flusharray) pinotj
2003-12-09  2:03 ` Nathan Scott
2003-12-09  7:21   ` Christoph Hellwig
2003-12-09 23:58     ` Nathan Scott
2003-12-12 19:00       ` Christoph Hellwig
2003-12-12 20:07         ` Manfred Spraul [this message]
  -- strict thread matches above, loose matches on Subject: below --
2003-12-04 18:27 pinotj
2003-12-04 18:49 ` Linus Torvalds
2003-12-04 19:09   ` Linus Torvalds
2003-12-04 21:21     ` Nathan Scott
2003-12-05  7:14       ` Christoph Hellwig
2003-12-05  9:34         ` Nathan Scott
2003-12-05 14:22           ` Christoph Hellwig
2003-12-05  3:00     ` Nathan Scott
2003-12-05  6:40       ` Linus Torvalds
2003-12-04 19:19   ` Manfred Spraul
2003-12-04 21:26   ` Nathan Scott
2003-12-03 23:06 pinotj
2003-12-03 23:26 ` Linus Torvalds
2003-11-29 17:41 pinotj
2003-12-02  0:36 ` Linus Torvalds
2003-12-02  1:37   ` Nathan Scott
2003-12-02  6:44     ` Nathan Scott
2003-12-02 18:05       ` Mike Fedyk
2003-12-02 20:05         ` Nathan Scott
2003-11-27 18:42 pinotj
2003-11-27 18:55 ` Manfred Spraul
2003-12-02  1:03 ` Mike Fedyk
2003-11-25 17:30 pinotj
2003-11-25 22:51 ` Linus Torvalds
2003-11-27 18:07   ` Manfred Spraul
2003-11-22  7:47 Re: " pinotj
2003-11-22 10:55 ` Manfred Spraul
2003-11-21 18:12 pinotj
2003-11-21 18:58 ` Manfred Spraul
2003-11-20  1:50 pinotj
2003-11-20  2:09 ` Andrew Morton
2003-11-19 18:19 pinotj
2003-11-20  1:07 ` Andrew Morton

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