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cciss: limit commands allocated on reset_devices

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

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Stephen M. Cameron 2010-10-22 14:21:17 -05:00 committed by Jens Axboe
parent f442e64b93
commit 186fb9cf6a
1 changed files with 5 additions and 0 deletions
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5
drivers/block/cciss.c
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@ -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. "