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authorVasu Dev <vasu.dev@intel.com>2011-09-27 21:38:18 -0700
committerJames Bottomley <JBottomley@Parallels.com>2011-10-02 12:57:40 -0500
commit860eca2b2bf90c513c1d6d9f889b3e0801e7ac08 (patch)
treefd37ae422fa49ac3f14a390185205726b1ddc3d3 /drivers/scsi/fcoe
parentd1483bb90a01ec68c2f6dc8842ce2d449cd6d6d0 (diff)
downloadop-kernel-dev-860eca2b2bf90c513c1d6d9f889b3e0801e7ac08.zip
op-kernel-dev-860eca2b2bf90c513c1d6d9f889b3e0801e7ac08.tar.gz
[SCSI] fcoe: setup default initial value for DDP threshold
Currently fcoe_ddp_min doesn't have default value so by default not used, so setting up default value as 4k as this works better by avoiding overhead of programing DDP for small IOs. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Yi Zou <yi.zou@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r--drivers/scsi/fcoe/fcoe.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index 0086fc8..80f3c48 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -52,7 +52,7 @@ MODULE_DESCRIPTION("FCoE");
MODULE_LICENSE("GPL v2");
/* Performance tuning parameters for fcoe */
-static unsigned int fcoe_ddp_min;
+static unsigned int fcoe_ddp_min = 4096;
module_param_named(ddp_min, fcoe_ddp_min, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(ddp_min, "Minimum I/O size in bytes for " \
"Direct Data Placement (DDP).");
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