Re: block: Allow merging of tail pages into the last segment

[Jan Vesely <jvesely@redhat.com>]

On 16/04/13 10:24, Jan Vesely wrote:
> On 28/03/13 10:38, Jan Vesely wrote:
>> Hi
>>
>> These patches modify __bio_add_page to accept pages that extent the last bio
>> segment. some drivers craft their buffers and rely on this behavior (see
>> message in patch 2 for details)
> 
> any comments on this version would be appreciated
> 
> thanks
> 
>>
>> jan
>>
>> v3: Use code from __blk_recalc_rq_segments to decide whether the page is
>>     mergeable, 
>>
>> v2: modify a comment
>>
>> Jan Vesely (2):
>>       block: factor out vector mergeable decision to a helper function
>>       block: modify __bio_add_page check to accept pages that don't start a new
>>
>>  block/blk-merge.c   | 52 +++++++++++++++++++++++++++++++---------------------
>>  fs/bio.c            | 29 ++++++++++++++++++-----------
>>  include/linux/bio.h |  3 +++
>>  3 files changed, 52 insertions(+), 32 deletions(-)
>>
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ping?


Jens, your input on v2 helped a lot, any comments on v3?

thanks
-- 
Jan Vesely <jvesely@redhat.com>