Re: [PATCH] 2.6.0-test10 O_DIRECT memory leak fix

From: IWAMOTO Toshihiro
Date: Mon Dec 01 2003 - 02:03:10 EST

At Tue, 25 Nov 2003 14:49:50 -0800,
Badari Pulavarty wrote:
> [1 <text/plain; us-ascii (quoted-printable)>]
> Hi Andrew,
> I found the problem with O_DIRECT memory leak.
> The problem is, when we are doing DIO read and crossed the end of file -
> we don't release referencess on all the pages we got from get_user_pages().
> (since it is a sucess case).
> The fix is to call dio_cleanup() even for sucess cases. Can you please
> review this ? I tested the patch with fsstress and there are no memory leak
> problems now.
> Thanks,
> Badari
> [2 dioleak.patch <text/x-diff; us-ascii (7bit)>]

I've tested this patch with linux-2.6.0-test11 (plus my memory
hotplug patch) on the machine I observed the memory leak.
The leak seems to be fixed. Thanks.

IWAMOTO Toshihiro
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