Messages in this thread | | | Date | Thu, 26 Mar 2009 10:10:34 +0200 | From | Boaz Harrosh <> | Subject | Re: [PATCH 03/14] block: implement blk_rq_map_kern_prealloc() |
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On 03/26/2009 10:05 AM, Boaz Harrosh wrote: > On 03/26/2009 09:42 AM, Tejun Heo wrote: >> The thing is that the prealloc variant should be allowed to be called >> from IRQ context and blk_queue_bounce() shouldn't be called. >> Hmmm... well, the caller is supposed to know what it's doing and maybe >> we can just add a comment that it shouldn't be called with buffers >> which might get bounced from IRQ context. >> > > Hmm that is a problem. I would suggest a flag or a check. My bios come > from VFS they need bouncing. > > Can you think of a solution? > > We could just call blk_queue_bounce(). IRQ callers need to make sure their > buffers don't need bouncing anyway, so there is no such bug right? If a programmer > gets it wrong he will get a BUG check that tells him that. >
I just realized that in your original call you had the "force" flag, we can keep that flag for the blk_rq_set_bio(), or what ever we should name it.
Thanks Boaz
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