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Date: Wed, 1 Jun 2011 17:50:49 -0400 From: Vivek Goyal <vgoyal@...hat.com> To: linux-ext4@...r.kernel.org Subject: Query about DIO/AIO WRITE throttling and ext4 serialization Hi, If I throttle a DIO/AIO WRITE bio at block device in a cgroup, will it lead to any kind of serialization of ext4 file system. IOW, is there any filesystem operation which will wait for that DIO/AIO WRITE to finish before other filesystem can make progress (fsync, journalling etc?) I know that for throttling of buffered WRITES I do run into serialization issues hence I was thinking of moving throttling buffered WRITE while they are entering page cache and get rid of issues related to filesystem serialization. I am not sure about DIO/AIO WRITES hence the question. Thanks Vivek -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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