From mboxrd@z Thu Jan 1 00:00:00 1970 From: mina86@mina86.com (Michal Nazarewicz) Date: Fri, 18 Nov 2011 22:26:49 +0100 Subject: [Linaro-mm-sig] [PATCHv17 0/11] Contiguous Memory Allocator In-Reply-To: References: <1321634598-16859-1-git-send-email-m.szyprowski@samsung.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, 18 Nov 2011 22:20:48 +0100, sandeep patil 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. -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Micha? ?mina86? Nazarewicz (o o) ooo +------------------ooO--(_)--Ooo--