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. -- Best regards, _ _ .o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o ..o | Computer Science, Michał “mina86” Nazarewicz (o o) ooo +----<email/xmpp: mpn@xxxxxxxxxx>--------------ooO--(_)--Ooo-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href