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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-02 14:34:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-02 14:34:52 -0700
commitf016a5405234709938b38e965e02950e51084ac3 (patch)
treeb1e592fad0290d49f30e7607e880ae31ce52f217 /block
parentd4fce2e20ffed59eb5db7780fcbbb0a21decef74 (diff)
parent632bfb6323799c087fcb4108dfe59518609667a7 (diff)
Merge tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe: "Single fix for a ->commit_rqs failure case" * tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block: blk-mq: call commit_rqs while list empty but error happen
Diffstat (limited to 'block')
-rw-r--r--block/blk-mq.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index b3d2785eefe9..cdced4aca2e8 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1412,6 +1412,11 @@ out:
hctx->dispatched[queued_to_index(queued)]++;
+ /* If we didn't flush the entire list, we could have told the driver
+ * there was more coming, but that turned out to be a lie.
+ */
+ if ((!list_empty(list) || errors) && q->mq_ops->commit_rqs && queued)
+ q->mq_ops->commit_rqs(hctx);
/*
* Any items that need requeuing? Stuff them into hctx->dispatch,
* that is where we will continue on next queue run.
@@ -1425,14 +1430,6 @@ out:
blk_mq_release_budgets(q, nr_budgets);
- /*
- * If we didn't flush the entire list, we could have told
- * the driver there was more coming, but that turned out to
- * be a lie.
- */
- if (q->mq_ops->commit_rqs && queued)
- q->mq_ops->commit_rqs(hctx);
-
spin_lock(&hctx->lock);
list_splice_tail_init(list, &hctx->dispatch);
spin_unlock(&hctx->lock);
@@ -2079,6 +2076,7 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
struct list_head *list)
{
int queued = 0;
+ int errors = 0;
while (!list_empty(list)) {
blk_status_t ret;
@@ -2095,6 +2093,7 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
break;
}
blk_mq_end_request(rq, ret);
+ errors++;
} else
queued++;
}
@@ -2104,7 +2103,8 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
* the driver there was more coming, but that turned out to
* be a lie.
*/
- if (!list_empty(list) && hctx->queue->mq_ops->commit_rqs && queued)
+ if ((!list_empty(list) || errors) &&
+ hctx->queue->mq_ops->commit_rqs && queued)
hctx->queue->mq_ops->commit_rqs(hctx);
}