diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2013-04-16 17:11:56 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-05-03 02:39:54 +0400 |
| commit | ac17078ae6947254331f56ce4f1db9ea221d43d6 (patch) | |
| tree | e2909e1b328f57de1e2fbd7eb2b47a1723e54bae /drivers/scsi | |
| parent | 9ed8d3dc5b46f86ab9117937bd24427ac10e8de5 (diff) | |
| download | linux-ac17078ae6947254331f56ce4f1db9ea221d43d6.tar.xz | |
[SCSI] scsi_debug: prohibit scsi_debug_unmap_granularity == scsi_debug_unmap_alignment
scsi_debug prohibits setting scsi_debug_unmap_alignment to be greater
than scsi_debug_unmap_granularity. But setting them to be the same value
is not prohibited. In this case, the only difference with
scsi_debug_unmap_alignment == 0 is the logical blocks from 0 to
scsi_debug_unmap_alignment - 1 cannot be unmapped. But the difference is
not properly handled in the current code.
So this prohibits such unusual setting.
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')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 05abf4e153a3..5c321409fff3 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -3413,9 +3413,10 @@ static int __init scsi_debug_init(void) clamp(scsi_debug_unmap_granularity, 1U, 0xffffffffU); if (scsi_debug_unmap_alignment && - scsi_debug_unmap_granularity < scsi_debug_unmap_alignment) { + scsi_debug_unmap_granularity <= + scsi_debug_unmap_alignment) { printk(KERN_ERR - "%s: ERR: unmap_granularity < unmap_alignment\n", + "%s: ERR: unmap_granularity <= unmap_alignment\n", __func__); return -EINVAL; } |