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/linux-4.1.27/drivers/scsi/megaraid/
Dmegaraid_sas_fp.c1294 u8 bestArm, pd0, pd1, span, arm; in megasas_get_best_arm_pd() local
1324 bestArm = (diff0 <= diff1 ? arm : arm ^ 1); in megasas_get_best_arm_pd()
1326 if ((bestArm == arm && pend0 > pend1 + lb_pending_cmds) || in megasas_get_best_arm_pd()
1327 (bestArm != arm && pend1 > pend0 + lb_pending_cmds)) in megasas_get_best_arm_pd()
1328 bestArm ^= 1; in megasas_get_best_arm_pd()
1331 io_info->pd_after_lb = (bestArm == arm) ? pd0 : pd1; in megasas_get_best_arm_pd()
1333 io_info->span_arm = (span << RAID_CTX_SPANARM_SPAN_SHIFT) | bestArm; in megasas_get_best_arm_pd()
1335 if (arm != bestArm) in megasas_get_best_arm_pd()
1339 span, arm, bestArm, io_info->span_arm); in megasas_get_best_arm_pd()