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| author | John Garry <john.garry@huawei.com> | 2020-08-19 17:20:26 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-03 23:20:47 +0200 |
| commit | bccf5e26d99c28980bd6ced474422a1b18402263 (patch) | |
| tree | 27af81c6aa730aea28de03b248624a55e6972563 /block/blk-core.c | |
| parent | blk-mq: Relocate hctx_may_queue() (diff) | |
| download | linux-bccf5e26d99c28980bd6ced474422a1b18402263.tar.xz linux-bccf5e26d99c28980bd6ced474422a1b18402263.zip | |
blk-mq: Record nr_active_requests per queue for when using shared sbitmap
The per-hctx nr_active value can no longer be used to fairly assign a share
of tag depth per request queue for when using a shared sbitmap, as it does
not consider that the tags are shared tags over all hctx's.
For this case, record the nr_active_requests per request_queue, and make
the judgement based on that value.
Co-developed-with: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Tested-by: Don Brace<don.brace@microsemi.com> #SCSI resv cmds patches used
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 9f2a99abeeb9..093649bd252e 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -543,6 +543,8 @@ struct request_queue *blk_alloc_queue(int node_id) q->backing_dev_info->capabilities = BDI_CAP_CGROUP_WRITEBACK; q->node = node_id; + atomic_set(&q->nr_active_requests_shared_sbitmap, 0); + timer_setup(&q->backing_dev_info->laptop_mode_wb_timer, laptop_mode_timer_fn, 0); timer_setup(&q->timeout, blk_rq_timed_out_timer, 0); |