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Groups > linux.kernel > #1512637
| From | Christoph Hellwig <hch@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 26/60] btrfs: set NO_MP for request queues behind BTRFS |
| Date | 2016-10-31 16:40 +0100 |
| Message-ID | <symQO-4eD-37@gated-at.bofh.it> (permalink) |
| References | <sxx1U-3GR-3@gated-at.bofh.it> <sxxbA-3Kf-37@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sat, Oct 29, 2016 at 04:08:25PM +0800, Ming Lei wrote: > There are lots of direct access to .bi_vcnt & .bi_io_vec > of bio, and it isn't ready to support multipage bvecs > for BTRFS, so set NO_MP for these request queues. For one bio is an I/O submitter, it has absolutely no business changing queue flags - if we need to stick to this limitation it simply needs a version of bio_add_page that doesn't create multi-page bvecs. Second I don't think making it multipage bvec aware is all that hard, and we should aim for doing the proper thing.
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[PATCH 26/60] btrfs: set NO_MP for request queues behind BTRFS Ming Lei <tom.leiming@gmail.com> - 2016-10-29 10:30 +0200
Re: [PATCH 26/60] btrfs: set NO_MP for request queues behind BTRFS Christoph Hellwig <hch@infradead.org> - 2016-10-31 16:40 +0100
Re: [PATCH 26/60] btrfs: set NO_MP for request queues behind BTRFS Christoph Hellwig <hch@infradead.org> - 2016-10-31 19:10 +0100
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