Re: [Cluster-devel] [PATCH V10 10/19] block: loop: pass multi-page bvec to iov_iter

2018-11-19 Thread Ming Lei
On Thu, Nov 15, 2018 at 04:40:22PM -0800, Omar Sandoval wrote: > On Thu, Nov 15, 2018 at 04:52:57PM +0800, Ming Lei wrote: > > iov_iter is implemented with bvec itererator, so it is safe to pass > > multipage bvec to it, and this way is much more efficient than > > passing one page in each bvec. >

Re: [Cluster-devel] [PATCH V10 10/19] block: loop: pass multi-page bvec to iov_iter

2018-11-15 Thread Omar Sandoval
On Thu, Nov 15, 2018 at 04:52:57PM +0800, Ming Lei wrote: > iov_iter is implemented with bvec itererator, so it is safe to pass > multipage bvec to it, and this way is much more efficient than > passing one page in each bvec. > > Cc: Dave Chinner > Cc: Kent Overstreet > Cc: Mike Snitzer > Cc:

[Cluster-devel] [PATCH V10 10/19] block: loop: pass multi-page bvec to iov_iter

2018-11-15 Thread Ming Lei
iov_iter is implemented with bvec itererator, so it is safe to pass multipage bvec to it, and this way is much more efficient than passing one page in each bvec. Cc: Dave Chinner Cc: Kent Overstreet Cc: Mike Snitzer Cc: dm-de...@redhat.com Cc: Alexander Viro Cc: linux-fsde...@vger.kernel.org