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-rw-r--r--block/blk-mq.c52
1 files changed, 45 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 01d8735db8d..92284af4e0d 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1058,8 +1058,46 @@ static void blk_mq_hctx_notify(void *data, unsigned long action,
blk_mq_put_ctx(ctx);
}
-static void blk_mq_init_hw_commands(struct blk_mq_hw_ctx *hctx,
- void (*init)(void *, struct blk_mq_hw_ctx *,
+static int blk_mq_init_hw_commands(struct blk_mq_hw_ctx *hctx,
+ int (*init)(void *, struct blk_mq_hw_ctx *,
+ struct request *, unsigned int),
+ void *data)
+{
+ unsigned int i;
+ int ret = 0;
+
+ for (i = 0; i < hctx->queue_depth; i++) {
+ struct request *rq = hctx->rqs[i];
+
+ ret = init(data, hctx, rq, i);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+int blk_mq_init_commands(struct request_queue *q,
+ int (*init)(void *, struct blk_mq_hw_ctx *,
+ struct request *, unsigned int),
+ void *data)
+{
+ struct blk_mq_hw_ctx *hctx;
+ unsigned int i;
+ int ret = 0;
+
+ queue_for_each_hw_ctx(q, hctx, i) {
+ ret = blk_mq_init_hw_commands(hctx, init, data);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(blk_mq_init_commands);
+
+static void blk_mq_free_hw_commands(struct blk_mq_hw_ctx *hctx,
+ void (*free)(void *, struct blk_mq_hw_ctx *,
struct request *, unsigned int),
void *data)
{
@@ -1068,12 +1106,12 @@ static void blk_mq_init_hw_commands(struct blk_mq_hw_ctx *hctx,
for (i = 0; i < hctx->queue_depth; i++) {
struct request *rq = hctx->rqs[i];
- init(data, hctx, rq, i);
+ free(data, hctx, rq, i);
}
}
-void blk_mq_init_commands(struct request_queue *q,
- void (*init)(void *, struct blk_mq_hw_ctx *,
+void blk_mq_free_commands(struct request_queue *q,
+ void (*free)(void *, struct blk_mq_hw_ctx *,
struct request *, unsigned int),
void *data)
{
@@ -1081,9 +1119,9 @@ void blk_mq_init_commands(struct request_queue *q,
unsigned int i;
queue_for_each_hw_ctx(q, hctx, i)
- blk_mq_init_hw_commands(hctx, init, data);
+ blk_mq_free_hw_commands(hctx, free, data);
}
-EXPORT_SYMBOL(blk_mq_init_commands);
+EXPORT_SYMBOL(blk_mq_free_commands);
static void blk_mq_free_rq_map(struct blk_mq_hw_ctx *hctx)
{