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authorJames Bottomley <James.Bottomley@HansenPartnership.com>2007-12-31 16:37:00 -0600
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-11 18:29:20 -0600
commit11c3e689f1c3a73e3af7b0ea767b1b0626da8033 (patch)
tree0f1d109897b13c9d0f86a3ba5af088596f728cdb /drivers/ieee1394
parent166a72878f76e911f2d1ce4b2310d4403e94be11 (diff)
[SCSI] block: Introduce new blk_queue_update_dma_alignment interface
The purpose of this is to allow stacked alignment settings, with the ultimate queue alignment being set to the largest alignment requirement in the stack. The reason for this is so that the SCSI mid-layer can relax the default alignment requirements (which are basically causing a lot of superfluous copying to go on in the SG_IO interface) while allowing transports, devices or HBAs to add stricter limits if they need them. Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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