From: Andrew Morton <akpm@zip.com.au>
To: "David S. Miller" <davem@redhat.com>
Cc: bcrl@redhat.com, hugh@veritas.com, marcelo@conectiva.com.br,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] __free_pages_ok oops
Date: Wed, 06 Feb 2002 22:19:32 -0800 [thread overview]
Message-ID: <3C621C74.8A005EB6@zip.com.au> (raw)
In-Reply-To: <3C6214F0.A66C89CF@zip.com.au>, <Pine.LNX.4.21.0202061844450.1856-100000@localhost.localdomain> <20020207000930.A17125@redhat.com> <3C6214F0.A66C89CF@zip.com.au> <20020206.215539.33252283.davem@redhat.com>
"David S. Miller" wrote:
>
> From: Andrew Morton <akpm@zip.com.au>
> Date: Wed, 06 Feb 2002 21:47:28 -0800
>
> Are you sure that the pages are being released from interrupt context?
>
> BH context... that's where SKB frees happen.
>
> hmmm...
It's only a problem if this is the final put_page(). In the
case of sendfile(), process-context code can be taught to take
a temporary reference on the page, and only release it after the network
stack is known to have finished with the page. sendfile is synchronous, yes?
And in the case of all other skb frees, the underlying page
won't be on the LRU. I hope.
-
next prev parent reply other threads:[~2002-02-07 6:20 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-06 19:06 [PATCH] __free_pages_ok oops Hugh Dickins
2002-02-06 19:47 ` Andrew Morton
2002-02-06 20:15 ` Hugh Dickins
2002-02-06 21:11 ` Andrew Morton
2002-02-07 20:31 ` Manfred Spraul
2002-02-07 5:09 ` Benjamin LaHaise
2002-02-07 5:47 ` Andrew Morton
2002-02-07 5:55 ` David S. Miller
2002-02-07 6:19 ` Andrew Morton [this message]
2002-02-07 6:49 ` David S. Miller
2002-02-07 7:07 ` Andrew Morton
2002-02-07 11:52 ` Hugh Dickins
2002-02-07 12:34 ` Rik van Riel
2002-02-07 12:37 ` David S. Miller
2002-02-07 12:44 ` Rik van Riel
2002-02-07 13:19 ` Hugh Dickins
2002-02-07 13:27 ` Rik van Riel
2002-02-07 13:55 ` Daniel Phillips
2002-02-07 14:28 ` Hugh Dickins
2002-02-07 14:56 ` Rik van Riel
2002-02-07 20:21 ` Hugh Dickins
2002-02-07 20:58 ` Andrea Arcangeli
2002-02-07 21:09 ` Andrew Morton
2002-02-07 22:18 ` Andrea Arcangeli
2002-02-07 22:31 ` Andrew Morton
2002-02-07 23:09 ` Andrea Arcangeli
2002-02-07 23:27 ` Andrew Morton
2002-02-08 17:46 ` Hugh Dickins
2002-02-09 14:14 ` Gerd Knorr
2002-02-09 15:47 ` arjan
2002-02-09 14:33 ` Benjamin LaHaise
2002-02-12 20:19 ` Hugh Dickins
2002-02-13 18:52 ` Marcelo Tosatti
2002-02-14 10:47 ` Hugh Dickins
2002-02-14 11:10 ` Gerd Knorr
2002-02-14 13:10 ` Andrea Arcangeli
2002-02-14 14:01 ` Hugh Dickins
2002-02-14 15:17 ` Andrea Arcangeli
2002-02-14 16:27 ` Linus Torvalds
2002-02-25 18:32 ` Benjamin LaHaise
2002-02-25 19:35 ` Linus Torvalds
2002-02-07 9:48 ` Benjamin LaHaise
-- strict thread matches above, loose matches on Subject: below --
2002-02-09 8:52 alad
2002-02-09 10:46 ` Hugh Dickins
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