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From: Jinyoung CHOI <j-young.choi@samsung.com>
To: "hch@lst.de" <hch@lst.de>
Cc: "axboe@kernel.dk" <axboe@kernel.dk>,
	"kbusch@kernel.org" <kbusch@kernel.org>,
	"sagi@grimberg.me" <sagi@grimberg.me>,
	"jejb@linux.ibm.com" <jejb@linux.ibm.com>,
	"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
	"johannes.thumshirn@wdc.com" <johannes.thumshirn@wdc.com>,
	"kch@nvidia.com" <kch@nvidia.com>,
	"willy@infradead.org" <willy@infradead.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE:(2) [PATCH v2 05/14] block: blk-merge: fix to add the number of integrity segments to the request twice
Date: Tue, 16 May 2023 22:24:12 +0900	[thread overview]
Message-ID: <20230516132412epcms2p2549c58f92db9919002c7e05ed044bcc8@epcms2p2> (raw)
In-Reply-To: <20230512135136.GD32242@lst.de>

>The subject looks a bit odd, I think you're trying to say:
>
>"do not add the number of integrity segments to the request twice"
>
>based on the actual patch, is this correct?
>

Yes. I will fix it.

>> +static inline bool blk_integrity_bypass_check(struct request *req,
>> +                                              struct bio *bio)
>> +{
>> +        return blk_integrity_rq(req) == 0 && bio_integrity(bio) == NULL;
>> +}
>
>No need for the explicit comparisms, this could just be:
>
>        return !blk_integrity_rq(req) && !bio_integrity(bio);
>
>and given that it just has two callers I'm not sure the helper is
>all that useful to start with.

There are many conditional sentences like that, so I left them for unity,
If it's okay to change, I'll do so.

>> +static bool __blk_integrity_mergeable(struct request_queue *q,
>> +                                      struct request *req, struct bio *bio)
>> +{
>> +        if (blk_integrity_rq(req) == 0 || bio_integrity(bio) == NULL)
>> +                return false;
>> +
>> +        if (bio_integrity(req->bio)->bip_flags != bio_integrity(bio)->bip_flags)
>> +                return false;
>> +
>> +        return true;
>> +}
>> +
>> +bool blk_integrity_mergeable(struct request_queue *q, struct request *req,
>> +                             struct bio *bio)
>> +{
>> +        if (blk_integrity_bypass_check(req, bio))
>> +                return true;
>> +
>> +        return __blk_integrity_mergeable(q, req, bio);
>> +}
>
>Similarly here, I'm not even sure we need all these helpers.  I supect
>the code would become more readable by dropping these helpers and just
>making the checks explicitlẏ

OK. I will drop this.

Best Regards,
Jinyoung.

  reply	other threads:[~2023-05-16 13:24 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20230510084407epcms2p123f17696d3c30c749897eeaf2c4de684@epcms2p1>
2023-05-10  8:44 ` [PATCH v2 00/14] Change the integrity configuration method in block Jinyoung CHOI
2023-05-10  8:46   ` [PATCH v2 01/14] block: bio: separation to reuse a part of the function Jinyoung CHOI
2023-05-10  8:48   ` [PATCH v2 02/14] block: bio-integrity: modify bio_integrity_add_page() Jinyoung CHOI
2023-05-12 13:43     ` hch
2023-05-16 12:54       ` Jinyoung CHOI
2023-05-10  8:50   ` [PATCH v2 03/14] block: bio-integrity: cleanup bio_integrity_prep Jinyoung CHOI
2023-05-12 13:45     ` hch
2023-05-10  8:51   ` [PATCH v2 04/14] block: fix not to apply bip information in blk_rq_bio_prep() Jinyoung CHOI
2023-05-12 13:47     ` hch
2023-05-10  8:52   ` [PATCH v2 05/14] block: blk-merge: fix to add the number of integrity segments to the request twice Jinyoung CHOI
2023-05-12 13:51     ` hch
2023-05-16 13:24       ` Jinyoung CHOI [this message]
2023-05-10  8:53   ` [PATCH v2 06/14] block: blk-merge: fix merging two requests in ll_merge_requests_fn Jinyoung CHOI
2023-05-10  8:53   ` [PATCH v2 07/14] block: add helper function to get the number of integrity segments Jinyoung CHOI
2023-05-10  8:56   ` [PATCH v2 08/14] scsi: add scsi_alloc_integrity_sgtables() for integrity process Jinyoung CHOI
2023-05-12 13:52     ` hch
2023-05-17  2:20       ` Jinyoung CHOI
2023-05-10  8:56   ` [PATCH v2 09/14] scsi: change to use blk_rq_nr_integrity_segments() instead of blk_rq_count_integrity_sg() Jinyoung CHOI
2023-05-10  8:58   ` [PATCH v2 10/14] block: blk-integrity: change how to find the number of integrity of bio Jinyoung CHOI
2023-05-10  8:59   ` [PATCH v2 11/14] nvme: rdma: change how to find the number of integrity of request Jinyoung CHOI
2023-05-10  8:59   ` [PATCH v2 12/14] block: add helper function for iteration of bip's bvec Jinyoung CHOI
2023-05-12 13:54     ` hch
2023-05-17  2:35       ` Jinyoung CHOI
2023-05-10  9:00   ` [PATCH v2 13/14] block: blk-integrity: change sg-table configuration method for integrity Jinyoung CHOI
2023-05-10  9:01   ` [PATCH v2 14/14] block: blk-integrity: remove blk_rq_count_integrity_sg() Jinyoung CHOI

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