Re: [Linaro-mm-sig] [PATCHv17 0/11] Contiguous Memory Allocator
From: Michal Nazarewicz
Date: Fri Nov 18 2011 - 16:26:53 EST
On Fri, 18 Nov 2011 22:20:48 +0100, sandeep patil <psandeep.s@xxxxxxxxx> wrote:
I am running a simple test to allocate contiguous regions and write a log on
in a file on sdcard simultaneously. I can reproduce this migration failure 100%
times with it.
when I tracked the pages that failed to migrate, I found them on the
buffer head lru
list with a reference held on the buffer_head in the page, which
causes drop_buffers()
to fail.
So, i guess my question is, until all the migration failures are
tracked down and fixed,
is there a plan to retry the contiguous allocation from a new range in
the CMA region?
No. Current CMA implementation will stick to the same range of pages also
on consequent allocations of the same size.
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Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, MichaÅ âmina86â Nazarewicz (o o)
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