Move the initialization of scsi_cmd->jiffies_at_alloc to allocation
time rather than prep time. Also ensure that jiffies_at_alloc
is preserved when we go through prep. This lets us send retries
through prep again and not break the overall retry timer logic
in scsi_softirq_done.
Suggested-by: Bart Van Assche <bart.vanass...@wdc.com>
Signed-off-by: Brian King <brk...@linux.vnet.ibm.com>
---
Index: linux-2.6.git/drivers/scsi/scsi_lib.c
===================================================================
--- linux-2.6.git.orig/drivers/scsi/scsi_lib.c
+++ linux-2.6.git/drivers/scsi/scsi_lib.c
@@ -1154,6 +1154,7 @@ void scsi_init_command(struct scsi_devic
void *buf = cmd->sense_buffer;
void *prot = cmd->prot_sdb;
unsigned int unchecked_isa_dma = cmd->flags & SCMD_UNCHECKED_ISA_DMA;
+ unsigned long jiffies_at_alloc = cmd->jiffies_at_alloc;
/* zero out the cmd, except for the embedded scsi_request */
memset((char *)cmd + sizeof(cmd->req), 0,
@@ -1164,7 +1165,7 @@ void scsi_init_command(struct scsi_devic
cmd->prot_sdb = prot;
cmd->flags = unchecked_isa_dma;
INIT_DELAYED_WORK(&cmd->abort_work, scmd_eh_abort_handler);
- cmd->jiffies_at_alloc = jiffies;
+ cmd->jiffies_at_alloc = jiffies_at_alloc;
scsi_add_cmd_to_list(cmd);
}
@@ -2119,6 +2120,7 @@ static int scsi_init_rq(struct request_q
if (!cmd->sense_buffer)
goto fail;
cmd->req.sense = cmd->sense_buffer;
+ cmd->jiffies_at_alloc = jiffies;
if (scsi_host_get_prot(shost) >= SHOST_DIX_TYPE0_PROTECTION) {
cmd->prot_sdb = kmem_cache_zalloc(scsi_sdb_cache, gfp);
