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scsi: core: Make the scsi_alloc_sgtables() documentation more accurate

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The current scsi_alloc_sgtables() documentation does not accurately explain
what this function does. Hence improve the documentation of this function.

Link: https://lore.kernel.org/r/20210415220826.29438-2-bvanassche@acm.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2021-04-15 15:08:07 -07:00 committed by Martin K. Petersen
parent 1f02beff22
commit 76fc0df9a0
1 changed files with 5 additions and 2 deletions
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7
drivers/scsi/scsi_lib.c
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@ -999,8 +999,11 @@ static inline bool scsi_cmd_needs_dma_drain(struct scsi_device *sdev,
}
/**
* scsi_alloc_sgtables - allocate S/G tables for a command
* @cmd: command descriptor we wish to initialize
* scsi_alloc_sgtables - Allocate and initialize data and integrity scatterlists
* @cmd: SCSI command data structure to initialize.
*
* Initializes @cmd->sdb and also @cmd->prot_sdb if data integrity is enabled
* for @cmd.
*
* Returns:
* * BLK_STS_OK - on success