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authorAkinobu Mita <akinobu.mita@gmail.com>2013-04-16 22:11:57 +0900
committerJames Bottomley <JBottomley@Parallels.com>2013-05-02 15:40:41 -0700
commitcc34a8e663b2908b9ab487dab8456d117a1e0b93 (patch)
tree44afa617c1072371827df144f61e9781a99d9419 /drivers/scsi/scsi_debug.c
parentac17078ae6947254331f56ce4f1db9ea221d43d6 (diff)
[SCSI] scsi_debug: clear correct memory region when LBPRZ is enabled
The function unmap_region() clears memory region specified as the logical block address and the number of logical blocks in ramdisk storage (fake_storep) if lbpu and lbprz module parameters are enabled. In the while loop of unmap_region(), it advances optimal unmap granularity in logical blocks. But it only clears one logical block at LBA 'block' per loop iteration. And furthermore, the 'block' is not pointing to a logical block address which should be cleared, it is a index of probisioning map (map_storep). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
-rw-r--r--drivers/scsi/scsi_debug.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 5c321409fff3..4b5d3887ff47 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -2059,8 +2059,9 @@ static void unmap_region(sector_t lba, unsigned int len)
clear_bit(block, map_storep);
if (scsi_debug_lbprz)
memset(fake_storep +
- block * scsi_debug_sector_size, 0,
- scsi_debug_sector_size);
+ lba * scsi_debug_sector_size, 0,
+ scsi_debug_sector_size *
+ scsi_debug_unmap_granularity);
}
lba += granularity - rem;
}