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authorJamie Pocas <jamie.pocas@emc.com>2015-11-29 14:44:57 -0800
committerNicholas Bellinger <nab@linux-iscsi.org>2016-01-06 13:39:55 -0800
commite6f41633cb79b55ead84b023c02035322c7827e7 (patch)
tree342f55892f82d100f496c8ed73f3570c8d956842 /drivers/target/target_core_iblock.c
parentef8f46b549c2e425513ed568f18c827a37c08727 (diff)
downloadlinux-e6f41633cb79b55ead84b023c02035322c7827e7.tar.bz2
target/sbc: Add LBPRZ attribute + control CDB emulation
This change sets the LBPRZ flag in EVPD page b2h and READ CAPACITY (16) based on a new unmap_zeroes_data device attribute. This flag is set automatically for iblock based on underlying block device queue's discard_zeroes_data flag. Signed-off-by: Jamie Pocas <jamie.pocas@emc.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_iblock.c')
-rw-r--r--drivers/target/target_core_iblock.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index f29c69120054..e77d15000caa 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -138,6 +138,8 @@ static int iblock_configure_device(struct se_device *dev)
q->limits.discard_granularity >> 9;
dev->dev_attrib.unmap_granularity_alignment =
q->limits.discard_alignment;
+ dev->dev_attrib.unmap_zeroes_data =
+ q->limits.discard_zeroes_data;
pr_debug("IBLOCK: BLOCK Discard support available,"
" disabled by default\n");