target/rd: Allow WriteCacheEnabled=1 operation with rd_mcp backends
authorNicholas Bellinger <nab@linux-iscsi.org>
Thu, 23 Aug 2012 01:53:12 +0000 (18:53 -0700)
committerNicholas Bellinger <nab@linux-iscsi.org>
Tue, 18 Sep 2012 00:13:32 +0000 (17:13 -0700)
This patch adds the missing rd_mcp_template->write_cache_emulated=1 bit to
optionally allow WriteCacheEnabled=1 (WCE) to be enabled for the built-in
TCM/rd_mcp backend driver.

Tested on v3.6-rc[0,2] code with loopback+tcm_vhost fabric ports.

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/target_core_rd.c

index d00bbe33ff8b285f7777eaaf420d802e589169c2..58bcc870366fda650aec8a10fd8556a091915468 100644 (file)
@@ -474,6 +474,7 @@ static int rd_parse_cdb(struct se_cmd *cmd)
 static struct se_subsystem_api rd_mcp_template = {
        .name                   = "rd_mcp",
        .transport_type         = TRANSPORT_PLUGIN_VHBA_VDEV,
+       .write_cache_emulated   = 1,
        .attach_hba             = rd_attach_hba,
        .detach_hba             = rd_detach_hba,
        .allocate_virtdevice    = rd_allocate_virtdevice,