Re: [PATCH 0/20] mmu: arch/mm: Port OOM changes to arch page fault handlers.
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On Tue, Mar 20, 2012 at 2:18 PM, Kautuk Consul <consul.kautuk@xxxxxxxxx> 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. > > I was facing hang and livelock problems on my ARM and MIPS boards when > I invoked OOM by running the stress_32k.c test-case attached to this email. > > Since both the ARM and MIPS porting chainges were accepted, me and my > co-worker decided to take the initiative to port these changes to all other > MMU based architectures. > > Please review and do write back if there is any way I need to > improve/rewrite any > of these patches. > What about arch/um/? Does UML not need this change? -- Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-alpha" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html