Re: [uml-devel] why does index in truncate_inode_pages_range() grows so much ?

[Richard Weinberger <richard.weinberger@gmail.com>]

On Fri, Dec 13, 2013 at 10:52 AM, Toralf Förster <toralf.foerster@gmx.de> wrote:
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> On 12/11/2013 09:26 PM, Jan Kara wrote:
>> Thanks! So this works more or less as expected - trinity issued a
>> read at absurdly high offset so we created pagecache page a that
>> offset and tried to read data into it. That failed. We left the
>> page in the pagecache where it was for reclaim to reclaim it when
>> free pages are needed. Everything works as designed except we could
>> possibly argue that it's not the most efficient way to use
>> pages...
>>
>> Patch 'vfs: fix a bug when we do some dio reads with append dio
>> writes' (http://www.spinics.net/lists/linux-fsdevel/msg70899.html)
>> should actually change the situation and we won't unnecessarily
>> cache these pages.
>>
> confirmed - applied to latest git tree of Linus I helps.

Good to know! :-)

-- 
Thanks,
//richard

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