1. Removed the upper boundary restriction for the module parameter max_sgl_entries. Earlier, the max_sgl_entries was capped at the SCSI_MAX_SG_SEGMENTS kernel definition. With this change, the user would be able to set the max_sgl_entries to any value.
2. Added a print for the message log whenever the user sets the max_sgl_entries to a value greater than SCSI_MAX_SG_SEGMENTS to warn about the kernel definition overriding.
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@xxxxxxxxxxxxx>
---
drivers/scsi/mpt2sas/mpt2sas_base.c | 9 ++++++---
drivers/scsi/mpt3sas/mpt3sas_base.c | 5 ++++-
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 13d1d5b..adb99e5 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -2492,9 +2492,12 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
/* command line tunables for max sgl entries */
if (max_sgl_entries != -1) {
- ioc->shost->sg_tablesize = (max_sgl_entries <
- MPT2SAS_SG_DEPTH) ? max_sgl_entries :
- MPT2SAS_SG_DEPTH;
+ if (max_sgl_entries > MPT2SAS_SG_DEPTH)
+ printk(MPT2SAS_WARN_FMT
+ "setting max_sgl_entries(%d), overriding kernel"
+ " defined SCSI_MAX_SG_SEGMENTS(%d)\n", ioc->name,
+ max_sgl_entries, MPT2SAS_SG_DEPTH);
+ ioc->shost->sg_tablesize = max_sgl_entries;
} else {
ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index f1918cf..35d4780 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2667,7 +2667,10 @@ _base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
if (sg_tablesize < MPT3SAS_MIN_PHYS_SEGMENTS)
sg_tablesize = MPT3SAS_MIN_PHYS_SEGMENTS;
else if (sg_tablesize > MPT3SAS_MAX_PHYS_SEGMENTS)
- sg_tablesize = MPT3SAS_MAX_PHYS_SEGMENTS;
+ pr_warn(MPT3SAS_FMT
+ "setting max_sgl_entries(%d), overriding kernel"
+ " defined SCSI_MAX_SG_SEGMENTS(%d)\n", ioc->name,
+ max_sgl_entries, MPT3SAS_MAX_PHYS_SEGMENTS);
ioc->shost->sg_tablesize = sg_tablesize;
ioc->hi_priority_depth = facts->HighPriorityCredit;
--
2.0.2
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