Messages in this thread | | | Date | Mon, 13 Jun 2016 08:46:14 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH v2] block: make sure big bio is splitted into at most 256 bvecs |
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On Fri, Jun 10, 2016 at 01:37:17PM +0200, Hannes Reinecke wrote: > Hmm. So everybody is suffering because someone _might_ be using bio_clone? > Why can't we fixup bio_clone() (or the callers of which) to correctly > set the queue limits?
The only one suffering is bcache. Everyone else uses bios below the block layer arbitrary max size. The fixup to allow bio_clone support a larger size is the same one as to allow everyone else submitting larger bios: increase BIO_MAX_PAGES and create the required mempools to back that new larger size. Or just go for multipage biovecs..
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