Commit 186fb9cf authored by Stephen M. Cameron's avatar Stephen M. Cameron Committed by Jens Axboe
Browse files

cciss: limit commands allocated on reset_devices 



This is to conserve memory in a memory-limited kdump scenario

Signed-off-by: default avatarStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent f442e64b

drivers/block/cciss.c

+5 −0
Original line number Diff line number Diff line
@@ -4079,6 +4079,11 @@ static int __devinit cciss_find_cfgtables(ctlr_info_t *h) 
static void __devinit cciss_get_max_perf_mode_cmds(struct ctlr_info *h)

{

	h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));



	/* Limit commands in memory limited kdump scenario. */

	if (reset_devices && h->max_commands > 32)

		h->max_commands = 32;



	if (h->max_commands < 16) {

		dev_warn(&h->pdev->dev, "Controller reports "

			"max supported commands of %d, an obvious lie. "