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| author |   Martin K. Petersen <martin.petersen@oracle.com> | 2010-09-10 20:50:10 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@carl.home.kernel.dk> | 2010-09-10 20:50:10 +0200 |
| commit | 13f05c8d8e98bbdce89158bfdb2e380940695a88 (patch) | |
| tree | 055215e7e2b1bdc684ead64daa61b30b35eaa3c5 /drivers/scsi/hosts.c | |
| parent | Consolidate min_not_zero (diff) | |
| download | linux-dev-13f05c8d8e98bbdce89158bfdb2e380940695a88.tar.xz linux-dev-13f05c8d8e98bbdce89158bfdb2e380940695a88.zip | |
block/scsi: Provide a limit on the number of integrity segments
Some controllers have a hardware limit on the number of protection
information scatter-gather list segments they can handle.
Introduce a max_integrity_segments limit in the block layer and provide
a new scsi_host_template setting that allows HBA drivers to provide a
value suitable for the hardware.
Add support for honoring the integrity segment limit when merging both
bios and requests.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
Diffstat (limited to 'drivers/scsi/hosts.c')
| -rw-r--r-- | drivers/scsi/hosts.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 8a8f803439e1..10478153641b 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -376,6 +376,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) shost->this_id = sht->this_id; shost->can_queue = sht->can_queue; shost->sg_tablesize = sht->sg_tablesize; + shost->sg_prot_tablesize = sht->sg_prot_tablesize; shost->cmd_per_lun = sht->cmd_per_lun; shost->unchecked_isa_dma = sht->unchecked_isa_dma; shost->use_clustering = sht->use_clustering; |