From 92c4231aef720bd5e1d634d2f7335f31277318da Mon Sep 17 00:00:00 2001 From: Mike Miller Date: Wed, 6 Dec 2006 20:35:06 -0800 Subject: [PATCH] [PATCH] cciss: set sector_size to 2048 for performance Change the blk_queue_max_sectors from 512 to 2048. This helps increase performance. [akpm@osdl.org: s/sector_size/max_sectors/] Signed-off-by: Mike Miller Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/cciss.c | 12 +++++++++--- drivers/block/cciss.h | 1 + 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index a17223c43aeb..e61279f6f26e 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -269,6 +269,7 @@ static int cciss_proc_get_info(char *buffer, char **start, off_t offset, "Firmware Version: %c%c%c%c\n" "IRQ: %d\n" "Logical drives: %d\n" + "Max sectors: %d\n" "Current Q depth: %d\n" "Current # commands on controller: %d\n" "Max Q depth since init: %d\n" @@ -279,7 +280,9 @@ static int cciss_proc_get_info(char *buffer, char **start, off_t offset, (unsigned long)h->board_id, h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3], (unsigned int)h->intr[SIMPLE_MODE_INT], - h->num_luns, h->Qdepth, h->commands_outstanding, + h->num_luns, + h->cciss_max_sectors, + h->Qdepth, h->commands_outstanding, h->maxQsinceinit, h->max_outstanding, h->maxSG); pos += size; @@ -1395,7 +1398,7 @@ static void cciss_update_drive_info(int ctlr, int drv_index) /* This is a limit in the driver and could be eliminated. */ blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); - blk_queue_max_sectors(disk->queue, 512); + blk_queue_max_sectors(disk->queue, h->cciss_max_sectors); blk_queue_softirq_done(disk->queue, cciss_softirq_done); @@ -3347,6 +3350,9 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); cciss_procinit(i); + + hba[i]->cciss_max_sectors = 2048; + hba[i]->busy_initializing = 0; for (j = 0; j < NWD; j++) { /* mfm */ @@ -3371,7 +3377,7 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, /* This is a limit in the driver and could be eliminated. */ blk_queue_max_phys_segments(q, MAXSGENTRIES); - blk_queue_max_sectors(q, 512); + blk_queue_max_sectors(q, hba[i]->cciss_max_sectors); blk_queue_softirq_done(q, cciss_softirq_done); diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h index 0d765f9237be..c3df673f860b 100644 --- a/drivers/block/cciss.h +++ b/drivers/block/cciss.h @@ -77,6 +77,7 @@ struct ctlr_info unsigned int intr[4]; unsigned int msix_vector; unsigned int msi_vector; + int cciss_max_sectors; BYTE cciss_read; BYTE cciss_write; BYTE cciss_read_capacity;