Messages in this thread | | | Date | Wed, 10 Jun 2015 00:35:26 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH v5 1/5] fs: direct-io: don't dirtying pages for ITER_BVEC/ITER_KVEC direct read |
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On Tue, Jun 09, 2015 at 09:49:22PM +0800, Ming Lei wrote: > When direct read IO is submitted from kernel, it is often > unnecessary to dirty pages, for example of loop, dirtying pages > have been considered in the upper filesystem(over loop) side > already, and they don't need to be dirtied again. > > So this patch doesn't dirtying pages for ITER_BVEC/ITER_KVEC > direct read, and loop should be the 1st case to use ITER_BVEC/ITER_KVEC > for direct read I/O. > > The patch is based on previous Dave's patch.
Looks good, thanks!
Reviewed-by: Christoph Hellwig <hch@lst.de>
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