On 12/15/2015 04:54 PM, Jitendra Bhivare wrote:
From: Jitendra <jitendra.bhivare@xxxxxxxxxxxxx> We are taking mbox_lock spinlock which disables pre-emption before we poll for mbox completion. Waiting there with spinlock held in excess of 20s will cause soft lockup. Actual fix is to change mbox_lock to mutex. The changes are done in phases. This is the first part. 1. Changed mgmt_get_all_if_id to use MCC where after posting lock is released. 2. Changed be_mbox_db_ready_wait to busy wait for 12s max and removed wait_event_timeout. Added error handling code for IO reads. OPCODE_COMMON_QUERY_FIRMWARE_CONFIG mbox command takes 8s time when unreachable boot targets configured. Signed-off-by: Jitendra <jitendra.bhivare@xxxxxxxxxxxxx> --- drivers/scsi/be2iscsi/be_cmds.c | 60 +++++++++++++++++++-------------------- drivers/scsi/be2iscsi/be_mgmt.c | 32 ++++++++++++++------ 2 files changed, 51 insertions(+), 41 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
