lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[SCSI] mpt2sas: Use of get_free_pages for huge memorary allocation.

Browse Source 
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>
This commit is contained in:
Kashyap, Desai
2010-03-17 16:22:52 +05:30
committed by James Bottomley
parent f891dcfdc1
commit 89009fbb7d
2 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/scsi/mpt2sas/mpt2sas_base.h
View File

@ -676,7 +676,8 @@ struct MPT2SAS_ADAPTER {
dma_addr_t request_dma;
u32 request_dma_sz;
struct request_tracker *scsi_lookup;
spinlock_t scsi_lookup_lock;
ulong scsi_lookup_pages;
spinlock_t scsi_lookup_lock;
struct list_head free_list;
int pending_io_count;
wait_queue_head_t reset_wq;
@ -688,7 +689,7 @@ struct MPT2SAS_ADAPTER {
u16 max_sges_in_chain_message;
u16 chains_needed_per_io;
u16 chain_offset_value_for_main_message;
u16 chain_depth;
u32 chain_depth;
/* hi-priority queue */
u16 hi_priority_smid;