From e9926b4376544d5a2dc4d310d4d0006c634b1a93 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Sat, 29 Jun 2013 17:59:17 +0900 Subject: [PATCH] [SCSI] scsi_debug: invalidate protection info for unmapped region When UNMAP command is issued with the data integrity support enabled, the protection info for the unmapped region is remain unchanged. So READ command for the region later on causes data integrity failure. This fixes it by invalidating protection info for the unmapped region by filling with 0xff pattern. Signed-off-by: Akinobu Mita Acked-by: Douglas Gilbert Acked-by: "Martin K. Petersen" Signed-off-by: James Bottomley --- drivers/scsi/scsi_debug.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index e83e661b0257..83efec2919b1 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2064,6 +2064,11 @@ static void unmap_region(sector_t lba, unsigned int len) scsi_debug_sector_size * scsi_debug_unmap_granularity); } + if (dif_storep) { + memset(dif_storep + lba, 0xff, + sizeof(*dif_storep) * + scsi_debug_unmap_granularity); + } } lba = map_index_to_lba(index + 1); } -- GitLab