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Message-Id: <1368494338-7069-1-git-send-email-koverstreet@google.com> Date: Mon, 13 May 2013 18:18:37 -0700 From: Kent Overstreet <koverstreet@...gle.com> To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-aio@...ck.org Cc: akpm@...ux-foundation.org Subject: AIO refactoring/performance improvements/cancellation This is a respin of the AIO patches that were deferred until 3.11, along with some other stuff I had queued up. Changes: * Took the dynamic allocation stuff out of the percpu refcounting patch, which Tejun was wanting. I split the dynamic bits out into another patch, which I may resend later. * Changed batch completion to use a singly linked list instead of an rb tree; it now calls batch_complete_aio() early if it has to look too far down the list. * Some batch completion performance improvements, to avoid doing nested irqsave/restore (which was the source of a performance regression) and not free the kiocbs with irqs disabled. * There's also some more assorted refactoring/minor performance improvements that had been sitting in my tree for awhile but weren't in the patch series that was queued up for 3.10 * And, the last few patches add cancellation for direct IO; these patches are still preliminary but they do work and are useful for some simple use cases. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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