On Thu, Nov 15, 2018 at 12:20:28PM -0800, Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> > First it is more efficient to use bio_for_each_bvec() in both
> > blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how
> > many multi-page bvecs there are
On Fri, Nov 16, 2018 at 10:19:56AM +0100, Christoph Hellwig wrote:
> On Thu, Nov 15, 2018 at 02:18:47PM -0800, Omar Sandoval wrote:
> > My only reason to prefer unsigned int is consistency. unsigned int is
> > much more common in the kernel:
> >
> > $ ag --cc -s 'unsigned\s+int' | wc -l
> >
On Thu, Nov 15 2018 at 3:20pm -0500,
Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> > First it is more efficient to use bio_for_each_bvec() in both
> > blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how
> > many multi-page bvecs there are
On 2018/11/16 17:19, Christoph Hellwig wrote:
> On Thu, Nov 15, 2018 at 02:18:47PM -0800, Omar Sandoval wrote:
>> My only reason to prefer unsigned int is consistency. unsigned int is
>> much more common in the kernel:
>>
>> $ ag --cc -s 'unsigned\s+int' | wc -l
>> 129632
>> $ ag --cc -s
On Thu, Nov 15, 2018 at 02:18:47PM -0800, Omar Sandoval wrote:
> My only reason to prefer unsigned int is consistency. unsigned int is
> much more common in the kernel:
>
> $ ag --cc -s 'unsigned\s+int' | wc -l
> 129632
> $ ag --cc -s 'unsigned\s+(?!char|short|int|long)' | wc -l
> 22435
>
>
On Thu, Nov 15, 2018 at 04:05:10PM -0500, Mike Snitzer wrote:
> On Thu, Nov 15 2018 at 3:20pm -0500,
> Omar Sandoval wrote:
>
> > On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> > > First it is more efficient to use bio_for_each_bvec() in both
> > > blk_bio_segment_split() and
On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> First it is more efficient to use bio_for_each_bvec() in both
> blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how
> many multi-page bvecs there are in the bio.
>
> Secondly once bio_for_each_bvec() is used, the bvec
