From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH 13/15] scsi: core: Add helper to return number of logical blocks in a request
Date: Wed, 09 Jun 2021 23:19:11 -0400 [thread overview]
Message-ID: <yq1im2mflzw.fsf@ca-mkp.ca.oracle.com> (raw)
In-Reply-To: <a3687cac-dcc9-5579-5767-d211be505625@acm.org> (Bart Van Assche's message of "Wed, 9 Jun 2021 12:58:26 -0700")
Hi Bart!
> On 6/8/21 8:39 PM, Martin K. Petersen wrote:
>> +static inline unsigned int scsi_get_block_count(struct scsi_cmnd *scmd)
>> +{
>> + unsigned int shift = ilog2(scmd->device->sector_size) - SECTOR_SHIFT;
>> +
>> + return blk_rq_bytes(scmd->request) >> shift;
>> +}
>
> I think we either need a comment above this function that explains that
> the return value is a number of logical blocks or to change the function
> name to make the meaning of the return value clear.
I went with the scsi_get_ prefix to match the scsi_get_sectors() and
scsi_get_lba() calls. Felt that "block" would suffice but I could make
it scsi_logical_block_count() if you prefer?
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2021-06-10 4:02 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 3:39 [PATCH 00/15] Subject: Protection information and block size cleanup Martin K. Petersen
2021-06-09 3:39 ` [PATCH 01/15] scsi: core: Add scsi_prot_ref_tag() helper Martin K. Petersen
2021-06-09 19:55 ` Bart Van Assche
2021-06-14 14:33 ` Benjamin Block
2021-06-09 3:39 ` [PATCH 02/15] scsi: lpfc: Use the proper SCSI midlayer interfaces for PI Martin K. Petersen
2021-06-09 3:39 ` [PATCH 03/15] scsi: qla2xxx: " Martin K. Petersen
2021-06-17 0:15 ` Arun Easi
2021-06-09 3:39 ` [PATCH 04/15] scsi: mpt3sas: " Martin K. Petersen
2021-06-09 3:39 ` [PATCH 05/15] scsi: mpi3mr: " Martin K. Petersen
2021-06-09 3:39 ` [PATCH 06/15] scsi: zfcp: " Martin K. Petersen
2021-06-14 14:33 ` Benjamin Block
2021-06-15 2:27 ` Martin K. Petersen
2021-06-15 9:31 ` Benjamin Block
2021-06-09 3:39 ` [PATCH 07/15] scsi: isci: " Martin K. Petersen
2021-06-09 3:39 ` [PATCH 08/15] scsi: scsi_debug: Remove dump_sector() Martin K. Petersen
2021-06-09 19:55 ` Bart Van Assche
2021-06-14 22:06 ` Douglas Gilbert
2021-06-09 3:39 ` [PATCH 09/15] scsi: scsi_debug: Improve RDPROTECT/WRPROTECT handling Martin K. Petersen
2021-06-14 22:07 ` Douglas Gilbert
2021-06-09 3:39 ` [PATCH 10/15] scsi: core: Introduce scsi_get_sector() Martin K. Petersen
2021-06-14 14:48 ` Benjamin Block
2021-06-15 2:28 ` Martin K. Petersen
2021-06-15 9:33 ` Benjamin Block
2021-06-09 3:39 ` [PATCH 11/15] scsi: iser: Use scsi_get_sector() instead of scsi_get_lba() Martin K. Petersen
2021-06-09 3:39 ` [PATCH 12/15] scsi: core: Make scsi_get_lba() return the LBA Martin K. Petersen
2021-06-09 19:57 ` Bart Van Assche
2021-06-14 14:50 ` Benjamin Block
2021-06-15 9:34 ` Benjamin Block
2021-06-09 3:39 ` [PATCH 13/15] scsi: core: Add helper to return number of logical blocks in a request Martin K. Petersen
2021-06-09 19:58 ` Bart Van Assche
2021-06-10 3:19 ` Martin K. Petersen [this message]
2021-06-10 3:40 ` Bart Van Assche
2021-06-09 3:39 ` [PATCH 14/15] scsi: lpfc: Switch to scsi_get_block_count() Martin K. Petersen
2021-06-09 3:39 ` [PATCH 15/15] scsi: ufs: core: Use scsi_get_lba() to get LBA Martin K. Petersen
2021-06-09 19:59 ` Bart Van Assche
2021-07-16 21:27 ` [PATCH 00/15] Subject: Protection information and block size cleanup Bart Van Assche
2021-07-19 1:43 ` Martin K. Petersen
2021-07-21 3:53 ` Bart Van Assche
2021-07-24 2:13 ` Martin K. Petersen
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