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authorAkinobu Mita <akinobu.mita@gmail.com>2015-04-13 23:21:58 +0900
committerNicholas Bellinger <nab@linux-iscsi.org>2015-04-15 22:47:27 -0700
commit64d240b721b21e266ffde645ec965c3b6d1c551f (patch)
treeec77072987a3592c3f305cf50257bdfff1ce23fb /Documentation/target
parentc836777830428372074d5129ac513e1472c99791 (diff)
target/file: Fix UNMAP with DIF protection support
When UNMAP command is issued with DIF protection support enabled, the protection info for the unmapped region is remain unchanged. So READ command for the region causes data integrity failure. This fixes it by invalidating protection info for the unmapped region by filling with 0xff pattern. This change also adds helper function fd_do_prot_fill() in order to reduce code duplication with existing fd_format_prot(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: <stable@vger.kernel.org> # v3.14+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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