[SCSI] mpt2sas: Use of get_free_pages for huge memorary allocation.
use the get_free_pages API for larger contigious physical memory chunk.
Also, the ioc->chain_depth need to be changed from
a 16bit to 32bit variable because the number of chains will exceed 64k
when the queue depth is large.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 2e6e45a..9ad4b48 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1901,7 +1901,7 @@
ioc->config_page, ioc->config_page_dma);
}
- kfree(ioc->scsi_lookup);
+ free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
kfree(ioc->hpr_lookup);
kfree(ioc->internal_lookup);
}
@@ -2113,11 +2113,13 @@
ioc->name, (unsigned long long) ioc->request_dma));
total_sz += sz;
- ioc->scsi_lookup = kcalloc(ioc->scsiio_depth,
- sizeof(struct request_tracker), GFP_KERNEL);
+ sz = ioc->scsiio_depth * sizeof(struct request_tracker);
+ ioc->scsi_lookup_pages = get_order(sz);
+ ioc->scsi_lookup = (struct request_tracker *)__get_free_pages(
+ GFP_KERNEL, ioc->scsi_lookup_pages);
if (!ioc->scsi_lookup) {
- printk(MPT2SAS_ERR_FMT "scsi_lookup: kcalloc failed\n",
- ioc->name);
+ printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
+ "sz(%d)\n", ioc->name, (int)sz);
goto out;
}