[PATCH 1/1 v5] arm: fault.c: Port OOM changes into do_page_fault
Russell King - ARM Linux
linux at arm.linux.org.uk
Sat Nov 26 18:50:32 EST 2011
On Tue, Nov 22, 2011 at 01:31:30PM -0500, Kautuk Consul wrote:
> Commit d065bd810b6deb67d4897a14bfe21f8eb526ba99
> (mm: retry page fault when blocking on disk transfer) and
> commit 37b23e0525d393d48a7d59f870b3bc061a30ccdb
> (x86,mm: make pagefault killable)
> The above commits introduced changes into the x86 pagefault handler
> for making the page fault handler retryable as well as killable.
> These changes reduce the mmap_sem hold time, which is crucial
> during OOM killer invocation.
> Port these changes to ARM.
> Without these changes, my ARM board encounters many hang and livelock
> After applying this patch, OOM feature performance improves according to
> my testing.
> Signed-off-by: Kautuk Consul <consul.kautuk at gmail.com>
Thanks. I think this is fine. Please put it in the patch system so it's
not forgotten, and I'll get to it sometime during the next week. Thanks.
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