[PATCH] block: blk_queue_bounce_limits can actually sleep

From: Arjan van de Ven
Date: Tue May 20 2008 - 09:36:44 EST

From: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
Subject: [PATCH] block: blk_queue_bounce_limits can actually sleep

blk_queue_bounce_limit can call init_emergency_isa_pool, which
does sleeping allocations... document it as such by adding might_sleep() to the driver

Signed-off-by: Arjan van de Ven <arjan@xxxxxxxxxxxxxxx>
block/blk-settings.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 8dd8641..c420a67 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -148,6 +148,7 @@ void blk_queue_bounce_limit(struct request_queue *q, u64 dma_addr)
q->bounce_pfn = b_pfn;
if (dma) {
+ might_sleep();
q->bounce_gfp = GFP_NOIO | GFP_DMA;
q->bounce_pfn = b_pfn;

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