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authorBart Van Assche <bvanassche@acm.org>2019-04-02 12:58:10 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2019-04-12 20:20:06 -0400
commitbe71530aa9742afb02714ae7eab4d3c5ad107590 (patch)
treebd0422fcaa9eae27c7fc8fd82953d9738c157c52 /drivers/target
parent0f57cf5ce7661c9803064d8d1b4e7f3814e84649 (diff)
downloadlinux-be71530aa9742afb02714ae7eab4d3c5ad107590.tar.bz2
scsi: target/core: Make the XCOPY setup code easier to read by inlining two functions
The target_xcopy_setup_pt_port() and target_xcopy_init_pt_lun() functions obfuscate what is really going on. Hence inline these two functions. This patch does not change any functionality. Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_xcopy.c50
1 files changed, 23 insertions, 27 deletions
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 39f4490a3ebe..e59a896ac58a 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -505,31 +505,20 @@ void target_xcopy_release_pt(void)
destroy_workqueue(xcopy_wq);
}
-static void target_xcopy_setup_pt_port(
- struct xcopy_pt_cmd *xpt_cmd,
- struct xcopy_op *xop,
- bool remote_port)
-{
- struct se_cmd *ec_cmd = xop->xop_se_cmd;
- struct se_cmd *pt_cmd = &xpt_cmd->se_cmd;
-
- if (!remote_port) {
- pt_cmd->se_lun = ec_cmd->se_lun;
- pt_cmd->se_dev = ec_cmd->se_dev;
- }
-}
-
-static void target_xcopy_init_pt_lun(struct se_device *se_dev,
- struct se_cmd *pt_cmd, bool remote_port)
-{
- if (remote_port) {
- pt_cmd->se_lun = &se_dev->xcopy_lun;
- pt_cmd->se_dev = se_dev;
- }
-
- pt_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
-}
-
+/*
+ * target_xcopy_setup_pt_cmd - set up a pass-through command
+ * @xpt_cmd: Data structure to initialize.
+ * @xop: Describes the XCOPY operation received from an initiator.
+ * @se_dev: Backend device to associate with @xpt_cmd if
+ * @remote_port == true.
+ * @cdb: SCSI CDB to be copied into @xpt_cmd.
+ * @remote_port: If false, use the LUN through which the XCOPY command has
+ * been received. If true, use @se_dev->xcopy_lun.
+ * @alloc_mem: Whether or not to allocate an SGL list.
+ *
+ * Set up a SCSI command (READ or WRITE) that will be used to execute an
+ * XCOPY command.
+ */
static int target_xcopy_setup_pt_cmd(
struct xcopy_pt_cmd *xpt_cmd,
struct xcopy_op *xop,
@@ -541,12 +530,19 @@ static int target_xcopy_setup_pt_cmd(
struct se_cmd *cmd = &xpt_cmd->se_cmd;
sense_reason_t sense_rc;
int ret = 0, rc;
+
/*
* Setup LUN+port to honor reservations based upon xop->op_origin for
* X-COPY PUSH or X-COPY PULL based upon where the CDB was received.
*/
- target_xcopy_init_pt_lun(se_dev, cmd, remote_port);
- target_xcopy_setup_pt_port(xpt_cmd, xop, remote_port);
+ if (remote_port) {
+ cmd->se_lun = &se_dev->xcopy_lun;
+ cmd->se_dev = se_dev;
+ } else {
+ cmd->se_lun = xop->xop_se_cmd->se_lun;
+ cmd->se_dev = xop->xop_se_cmd->se_dev;
+ }
+ cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
cmd->tag = 0;
sense_rc = target_setup_cmd_from_cdb(cmd, cdb);