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blk-mq: remove REQ_ATOM_STARTED

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After the recent updates to use generation number and state based
synchronization, we can easily replace REQ_ATOM_STARTED usages by
adding an extra state to distinguish completed but not yet freed
state.

Add MQ_RQ_COMPLETE and replace REQ_ATOM_STARTED usages with
blk_mq_rq_state() tests.  REQ_ATOM_STARTED no longer has any users
left and is removed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Tejun Heo
2018-01-09 08:29:52 -08:00
committed by Jens Axboe
parent 634f9e4631
commit 5a61c36398
4 changed files with 10 additions and 33 deletions
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block/blk-mq-debugfs.c
+1 -3
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@@ -271,7 +271,6 @@ static const char *const cmd_flag_name[] = {
#define RQF_NAME(name) [ilog2((__force u32)RQF_##name)] = #name
static const char *const rqf_name[] = {
RQF_NAME(SORTED),
RQF_NAME(STARTED),
RQF_NAME(QUEUED),
RQF_NAME(SOFTBARRIER),
RQF_NAME(FLUSH_SEQ),
@@ -295,7 +294,6 @@ static const char *const rqf_name[] = {
#define RQAF_NAME(name) [REQ_ATOM_##name] = #name
static const char *const rqaf_name[] = {
RQAF_NAME(COMPLETE),
RQAF_NAME(STARTED),
RQAF_NAME(POLL_SLEPT),
};
#undef RQAF_NAME
@@ -409,7 +407,7 @@ static void hctx_show_busy_rq(struct request *rq, void *data, bool reserved)
const struct show_busy_params *params = data;
if (blk_mq_map_queue(rq->q, rq->mq_ctx->cpu) == params->hctx &&
test_bit(REQ_ATOM_STARTED, &rq->atomic_flags))
blk_mq_rq_state(rq) != MQ_RQ_IDLE)
__blk_mq_debugfs_rq_show(params->m,
list_entry_rq(&rq->queuelist));
}