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block: make blk_init_free_list and elevator_init idempotent
[linux-drm-fsl-dcu.git]
/
block
/
blk-core.c
diff --git
a/block/blk-core.c
b/block/blk-core.c
index 826d0707890238acd91c52234d3e1550bd264552..f84cce42fc58da2dc0bc48186cbd9f6bd1d7dfc3 100644
(file)
--- a/
block/blk-core.c
+++ b/
block/blk-core.c
@@
-467,6
+467,9
@@
static int blk_init_free_list(struct request_queue *q)
{
struct request_list *rl = &q->rq;
+ if (unlikely(rl->rq_pool))
+ return 0;
+
rl->count[BLK_RW_SYNC] = rl->count[BLK_RW_ASYNC] = 0;
rl->starved[BLK_RW_SYNC] = rl->starved[BLK_RW_ASYNC] = 0;
rl->elvpriv = 0;