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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 /include/target
parentef8f46b549c2e425513ed568f18c827a37c08727 (diff)
downloadop-kernel-dev-e6f41633cb79b55ead84b023c02035322c7827e7.zip
op-kernel-dev-e6f41633cb79b55ead84b023c02035322c7827e7.tar.gz
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 'include/target')
-rw-r--r--include/target/target_core_base.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 0a2c740..dc8b796 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -63,6 +63,8 @@
#define DA_UNMAP_GRANULARITY_DEFAULT 0
/* Default unmap_granularity_alignment */
#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
+/* Default unmap_zeroes_data */
+#define DA_UNMAP_ZEROES_DATA_DEFAULT 0
/* Default max_write_same_len, disabled by default */
#define DA_MAX_WRITE_SAME_LEN 0
/* Use a model alias based on the configfs backend device name */
@@ -674,6 +676,7 @@ struct se_dev_attrib {
int force_pr_aptpl;
int is_nonrot;
int emulate_rest_reord;
+ int unmap_zeroes_data;
u32 hw_block_size;
u32 block_size;
u32 hw_max_sectors;
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