tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

block, nvme: Introduce blk_mq_req_flags_t

Browse Source 
Several block layer and NVMe core functions accept a combination
of BLK_MQ_REQ_* flags through the 'flags' argument but there is
no verification at compile time whether the right type of block
layer flags is passed. Make it possible for sparse to verify this.
This patch does not change any functionality.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: linux-nvme@lists.infradead.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche
2017-11-09 10:49:59 -08:00
committed by Jens Axboe
parent 3a0a529971
commit 9a95e4ef70
8 changed files with 30 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
block/blk-core.c
+6 -6
View File
@@ -801,7 +801,7 @@ EXPORT_SYMBOL(blk_alloc_queue);
* @q: request queue pointer
* @flags: BLK_MQ_REQ_NOWAIT and/or BLK_MQ_REQ_PREEMPT
*/
int blk_queue_enter(struct request_queue *q, unsigned int flags)
int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags)
{
const bool preempt = flags & BLK_MQ_REQ_PREEMPT;
@@ -1225,7 +1225,7 @@ int blk_update_nr_requests(struct request_queue *q, unsigned int nr)
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
static struct request *__get_request(struct request_list *rl, unsigned int op,
struct bio *bio, unsigned int flags)
struct bio *bio, blk_mq_req_flags_t flags)
{
struct request_queue *q = rl->q;
struct request *rq;
@@ -1408,7 +1408,7 @@ rq_starved:
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
static struct request *get_request(struct request_queue *q, unsigned int op,
struct bio *bio, unsigned int flags)
struct bio *bio, blk_mq_req_flags_t flags)
{
const bool is_sync = op_is_sync(op);
DEFINE_WAIT(wait);
@@ -1458,7 +1458,7 @@ retry:
/* flags: BLK_MQ_REQ_PREEMPT and/or BLK_MQ_REQ_NOWAIT. */
static struct request *blk_old_get_request(struct request_queue *q,
unsigned int op, unsigned int flags)
unsigned int op, blk_mq_req_flags_t flags)
{
struct request *rq;
gfp_t gfp_mask = flags & BLK_MQ_REQ_NOWAIT ? GFP_ATOMIC :
@@ -1495,7 +1495,7 @@ static struct request *blk_old_get_request(struct request_queue *q,
* @flags: BLK_MQ_REQ_* flags, e.g. BLK_MQ_REQ_NOWAIT.
*/
struct request *blk_get_request_flags(struct request_queue *q, unsigned int op,
unsigned int flags)
blk_mq_req_flags_t flags)
{
struct request *req;
@@ -2291,7 +2291,7 @@ blk_qc_t generic_make_request(struct bio *bio)
current->bio_list = bio_list_on_stack;
do {
struct request_queue *q = bio->bi_disk->queue;
unsigned int flags = bio->bi_opf & REQ_NOWAIT ?
blk_mq_req_flags_t flags = bio->bi_opf & REQ_NOWAIT ?
BLK_MQ_REQ_NOWAIT : 0;
if (likely(blk_queue_enter(q, flags) == 0)) {
block/blk-mq.c
+2 -2
View File
@@ -383,7 +383,7 @@ static struct request *blk_mq_get_request(struct request_queue *q,
}
struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
unsigned int flags)
blk_mq_req_flags_t flags)
{
struct blk_mq_alloc_data alloc_data = { .flags = flags };
struct request *rq;
@@ -409,7 +409,7 @@ struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
EXPORT_SYMBOL(blk_mq_alloc_request);
struct request *blk_mq_alloc_request_hctx(struct request_queue *q,
unsigned int op, unsigned int flags, unsigned int hctx_idx)
unsigned int op, blk_mq_req_flags_t flags, unsigned int hctx_idx)
{
struct blk_mq_alloc_data alloc_data = { .flags = flags };
struct request *rq;
block/blk-mq.h
+1 -1
View File
@@ -111,7 +111,7 @@ static inline void blk_mq_put_ctx(struct blk_mq_ctx *ctx)
struct blk_mq_alloc_data {
/* input parameter */
struct request_queue *q;
unsigned int flags;
blk_mq_req_flags_t flags;
unsigned int shallow_depth;
/* input & output parameter */