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authorMartin K. Petersen <martin.petersen@oracle.com>2009-11-26 12:00:40 -0500
committerJames Bottomley <James.Bottomley@suse.de>2009-12-10 08:54:15 -0600
commite339c1a7c09ef736dca7b3a4353c7742557d9f8f (patch)
tree60f7bc7c1867f180262dab01cc8c047967d728cd /drivers/net/sunqe.h
parentcc9b2e9f6603190c009e5d2629ce8e3f99571346 (diff)
[SCSI] sd: WRITE SAME(16) / UNMAP support
Implement a function for handling discard requests that sends either WRITE SAME(16) or UNMAP(10) depending on parameters indicated by the device in the block limits VPD. Extract unmap constraints and report them to the block layer. Based in part by a patch by Christoph Hellwig <hch@lst.de>. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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