[PATCH] block: blk_queue_bounce_limits can actually sleep

[Arjan van de Ven]

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;
 #endif
 	if (dma) {
+		might_sleep();
 		init_emergency_isa_pool();
 		q->bounce_gfp = GFP_NOIO | GFP_DMA;
 		q->bounce_pfn = b_pfn;
-- 
1.5.4.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/