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authorTao Ma <boyu.mt@taobao.com>2011-10-24 16:11:30 +0200
committerJens Axboe <axboe@kernel.dk>2011-10-24 16:11:30 +0200
commit9562ad9ab36df7ccef920d119f3b5100025db95f (patch)
treeb5e32ca469cbefca4122c1a08db80cdb12e655fb /include/linux/bio.h
parente890413af4c2dfebf5432ef30cc70cb11dad3213 (diff)
block: Remove the control of complete cpu from bio.
bio originally has the functionality to set the complete cpu, but it is broken. Chirstoph said that "This code is unused, and from the all the discussions lately pretty obviously broken. The only thing keeping it serves is creating more confusion and possibly more bugs." And Jens replied with "We can kill bio_set_completion_cpu(). I'm fine with leaving cpu control to the request based drivers, they are the only ones that can toggle the setting anyway". So this patch tries to remove all the work of controling complete cpu from a bio. Cc: Shaohua Li <shaohua.li@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/bio.h')
-rw-r--r--include/linux/bio.h8
1 files changed, 0 insertions, 8 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ce33e6868a2..a3c071c9e18 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -269,14 +269,6 @@ extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int);
extern unsigned int bvec_nr_vecs(unsigned short idx);
/*
- * Allow queuer to specify a completion CPU for this bio
- */
-static inline void bio_set_completion_cpu(struct bio *bio, unsigned int cpu)
-{
- bio->bi_comp_cpu = cpu;
-}
-
-/*
* bio_set is used to allow other portions of the IO system to
* allocate their own private memory pools for bio and iovec structures.
* These memory pools in turn all allocate from the bio_slab