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-rw-r--r--block/blk-cgroup.h8
-rw-r--r--block/blk-flush.c19
-rw-r--r--block/blk-mq.c16
3 files changed, 15 insertions, 28 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 1610b22edf09..86154eab9523 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -435,9 +435,9 @@ static inline uint64_t blkg_stat_read(struct blkg_stat *stat)
uint64_t v;
do {
- start = u64_stats_fetch_begin(&stat->syncp);
+ start = u64_stats_fetch_begin_bh(&stat->syncp);
v = stat->cnt;
- } while (u64_stats_fetch_retry(&stat->syncp, start));
+ } while (u64_stats_fetch_retry_bh(&stat->syncp, start));
return v;
}
@@ -508,9 +508,9 @@ static inline struct blkg_rwstat blkg_rwstat_read(struct blkg_rwstat *rwstat)
struct blkg_rwstat tmp;
do {
- start = u64_stats_fetch_begin(&rwstat->syncp);
+ start = u64_stats_fetch_begin_bh(&rwstat->syncp);
tmp = *rwstat;
- } while (u64_stats_fetch_retry(&rwstat->syncp, start));
+ } while (u64_stats_fetch_retry_bh(&rwstat->syncp, start));
return tmp;
}
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 331e627301ea..fb6f3c0ffa49 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -502,15 +502,6 @@ void blk_abort_flushes(struct request_queue *q)
}
}
-static void bio_end_flush(struct bio *bio, int err)
-{
- if (err)
- clear_bit(BIO_UPTODATE, &bio->bi_flags);
- if (bio->bi_private)
- complete(bio->bi_private);
- bio_put(bio);
-}
-
/**
* blkdev_issue_flush - queue a flush
* @bdev: blockdev to issue flush for
@@ -526,7 +517,6 @@ static void bio_end_flush(struct bio *bio, int err)
int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
sector_t *error_sector)
{
- DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q;
struct bio *bio;
int ret = 0;
@@ -548,13 +538,9 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
return -ENXIO;
bio = bio_alloc(gfp_mask, 0);
- bio->bi_end_io = bio_end_flush;
bio->bi_bdev = bdev;
- bio->bi_private = &wait;
- bio_get(bio);
- submit_bio(WRITE_FLUSH, bio);
- wait_for_completion_io(&wait);
+ ret = submit_bio_wait(WRITE_FLUSH, bio);
/*
* The driver must store the error location in ->bi_sector, if
@@ -564,9 +550,6 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
if (error_sector)
*error_sector = bio->bi_sector;
- if (!bio_flagged(bio, BIO_UPTODATE))
- ret = -EIO;
-
bio_put(bio);
return ret;
}
diff --git a/block/blk-mq.c b/block/blk-mq.c
index cdc629cf075b..c79126e11030 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -202,10 +202,12 @@ static struct request *blk_mq_alloc_request_pinned(struct request_queue *q,
if (rq) {
blk_mq_rq_ctx_init(q, ctx, rq, rw);
break;
- } else if (!(gfp & __GFP_WAIT))
- break;
+ }
blk_mq_put_ctx(ctx);
+ if (!(gfp & __GFP_WAIT))
+ break;
+
__blk_mq_run_hw_queue(hctx);
blk_mq_wait_for_tags(hctx->tags);
} while (1);
@@ -222,7 +224,8 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
return NULL;
rq = blk_mq_alloc_request_pinned(q, rw, gfp, reserved);
- blk_mq_put_ctx(rq->mq_ctx);
+ if (rq)
+ blk_mq_put_ctx(rq->mq_ctx);
return rq;
}
@@ -235,7 +238,8 @@ struct request *blk_mq_alloc_reserved_request(struct request_queue *q, int rw,
return NULL;
rq = blk_mq_alloc_request_pinned(q, rw, gfp, true);
- blk_mq_put_ctx(rq->mq_ctx);
+ if (rq)
+ blk_mq_put_ctx(rq->mq_ctx);
return rq;
}
EXPORT_SYMBOL(blk_mq_alloc_reserved_request);
@@ -308,12 +312,12 @@ void blk_mq_complete_request(struct request *rq, int error)
blk_account_io_completion(rq, bytes);
+ blk_account_io_done(rq);
+
if (rq->end_io)
rq->end_io(rq, error);
else
blk_mq_free_request(rq);
-
- blk_account_io_done(rq);
}
void __blk_mq_end_io(struct request *rq, int error)