Messages in this thread | | | Date | Sat, 19 May 2007 14:19:56 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH 8/9] readahead: convert ext3/ext4 invocations |
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On Thu, May 17, 2007 at 06:48:00AM +0800, Fengguang Wu wrote: > Convert ext3/ext4 dir reads to use on-demand readahead. > > Readahead for dirs operates _not_ on file level, but on blockdev level. > This makes a difference when the data blocks are not continuous. > And the read routine is somehow opaque: there's no handy info about the status > of current page. So a simplified call scheme is employed: to call into > readahead whenever the current page falls out of readahead windows.
ext2 too would be nice. Also when it goes in it might be worth contacting linux-fsdevel with a quick pointer to this so that other file systems can possibly benefit too. -Andi
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