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authorMike Christie <michael.christie@oracle.com>2022-06-28 15:02:27 -0500
committerMartin K. Petersen <martin.petersen@oracle.com>2022-07-07 16:53:52 -0400
commit6b206a5a8c2912c3c2174c5afc2f6e798d6ad212 (patch)
treebd98b2cb618038579a7800e3362f489d7769921d /drivers/target
parent036d8903f03b662bbdce5e32525bd2931b14c420 (diff)
downloadlinux-6b206a5a8c2912c3c2174c5afc2f6e798d6ad212.tar.bz2
scsi: target: Add callout to configure UNMAP settings
Add a callout to configure a backend's UNMAP settings. This will be used to allow userspace to configure UNMAP after the initial device setup, similar to how we can set up the other attributes post device configuration. Link: https://lore.kernel.org/r/20220628200230.15052-3-michael.christie@oracle.com Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_device.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 25f33eb25337..086ac9c9343c 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -960,6 +960,12 @@ int target_configure_device(struct se_device *dev)
ret = dev->transport->configure_device(dev);
if (ret)
goto out_free_index;
+
+ if (dev->transport->configure_unmap &&
+ dev->transport->configure_unmap(dev)) {
+ pr_debug("Discard support available, but disabled by default.\n");
+ }
+
/*
* XXX: there is not much point to have two different values here..
*/