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-rw-r--r--block/blk-core.c11
-rw-r--r--block/blk-mq-tag.c11
-rw-r--r--block/blk-mq.c20
-rw-r--r--block/blk-mq.h11
-rw-r--r--drivers/block/mtip32xx/mtip32xx.c2
-rw-r--r--drivers/block/null_blk.c2
-rw-r--r--drivers/nvme/host/lightnvm.c2
-rw-r--r--drivers/nvme/host/pci.c11
-rw-r--r--fs/block_dev.c4
-rw-r--r--include/linux/blk-mq.h8
-rw-r--r--include/linux/blkdev.h2
11 files changed, 42 insertions, 42 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index c88a946eca49..5ec996036e16 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -630,7 +630,7 @@ struct request_queue *blk_alloc_queue(gfp_t gfp_mask)
}
EXPORT_SYMBOL(blk_alloc_queue);
-int blk_queue_enter(struct request_queue *q, gfp_t gfp)
+int blk_queue_enter(struct request_queue *q, bool nowait)
{
while (true) {
int ret;
@@ -638,7 +638,7 @@ int blk_queue_enter(struct request_queue *q, gfp_t gfp)
if (percpu_ref_tryget_live(&q->q_usage_counter))
return 0;
- if (!gfpflags_allow_blocking(gfp))
+ if (nowait)
return -EBUSY;
ret = wait_event_interruptible(q->mq_freeze_wq,
@@ -1276,7 +1276,9 @@ static struct request *blk_old_get_request(struct request_queue *q, int rw,
struct request *blk_get_request(struct request_queue *q, int rw, gfp_t gfp_mask)
{
if (q->mq_ops)
- return blk_mq_alloc_request(q, rw, gfp_mask, false);
+ return blk_mq_alloc_request(q, rw,
+ (gfp_mask & __GFP_DIRECT_RECLAIM) ?
+ 0 : BLK_MQ_REQ_NOWAIT);
else
return blk_old_get_request(q, rw, gfp_mask);
}
@@ -2044,8 +2046,7 @@ blk_qc_t generic_make_request(struct bio *bio)
do {
struct request_queue *q = bdev_get_queue(bio->bi_bdev);
- if (likely(blk_queue_enter(q, __GFP_DIRECT_RECLAIM) == 0)) {
-
+ if (likely(blk_queue_enter(q, false) == 0)) {
ret = q->make_request_fn(q, bio);
blk_queue_exit(q);
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index a07ca3488d96..abdbb47405cb 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -268,7 +268,7 @@ static int bt_get(struct blk_mq_alloc_data *data,
if (tag != -1)
return tag;
- if (!gfpflags_allow_blocking(data->gfp))
+ if (data->flags & BLK_MQ_REQ_NOWAIT)
return -1;
bs = bt_wait_ptr(bt, hctx);
@@ -303,7 +303,7 @@ static int bt_get(struct blk_mq_alloc_data *data,
data->ctx = blk_mq_get_ctx(data->q);
data->hctx = data->q->mq_ops->map_queue(data->q,
data->ctx->cpu);
- if (data->reserved) {
+ if (data->flags & BLK_MQ_REQ_RESERVED) {
bt = &data->hctx->tags->breserved_tags;
} else {
last_tag = &data->ctx->last_tag;
@@ -349,10 +349,9 @@ static unsigned int __blk_mq_get_reserved_tag(struct blk_mq_alloc_data *data)
unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data)
{
- if (!data->reserved)
- return __blk_mq_get_tag(data);
-
- return __blk_mq_get_reserved_tag(data);
+ if (data->flags & BLK_MQ_REQ_RESERVED)
+ return __blk_mq_get_reserved_tag(data);
+ return __blk_mq_get_tag(data);
}
static struct bt_wait_state *bt_wake_ptr(struct blk_mq_bitmap_tags *bt)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 6d6f8feb48c0..93a4e1956915 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -229,8 +229,8 @@ __blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw)
return NULL;
}
-struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp,
- bool reserved)
+struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
+ unsigned int flags)
{
struct blk_mq_ctx *ctx;
struct blk_mq_hw_ctx *hctx;
@@ -238,24 +238,22 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp,
struct blk_mq_alloc_data alloc_data;
int ret;
- ret = blk_queue_enter(q, gfp);
+ ret = blk_queue_enter(q, flags & BLK_MQ_REQ_NOWAIT);
if (ret)
return ERR_PTR(ret);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_DIRECT_RECLAIM,
- reserved, ctx, hctx);
+ blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
- if (!rq && (gfp & __GFP_DIRECT_RECLAIM)) {
+ if (!rq && !(flags & BLK_MQ_REQ_NOWAIT)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q, gfp, reserved, ctx,
- hctx);
+ blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
ctx = alloc_data.ctx;
}
@@ -1175,8 +1173,7 @@ static struct request *blk_mq_map_request(struct request_queue *q,
rw |= REQ_SYNC;
trace_block_getrq(q, bio, rw);
- blk_mq_set_alloc_data(&alloc_data, q, GFP_ATOMIC, false, ctx,
- hctx);
+ blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
if (unlikely(!rq)) {
__blk_mq_run_hw_queue(hctx);
@@ -1185,8 +1182,7 @@ static struct request *blk_mq_map_request(struct request_queue *q,
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- blk_mq_set_alloc_data(&alloc_data, q,
- __GFP_RECLAIM|__GFP_HIGH, false, ctx, hctx);
+ blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
rq = __blk_mq_alloc_request(&alloc_data, rw);
ctx = alloc_data.ctx;
hctx = alloc_data.hctx;
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 713820b47b31..eaede8e45c9c 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -96,8 +96,7 @@ static inline void blk_mq_put_ctx(struct blk_mq_ctx *ctx)
struct blk_mq_alloc_data {
/* input parameter */
struct request_queue *q;
- gfp_t gfp;
- bool reserved;
+ unsigned int flags;
/* input & output parameter */
struct blk_mq_ctx *ctx;
@@ -105,13 +104,11 @@ struct blk_mq_alloc_data {
};
static inline void blk_mq_set_alloc_data(struct blk_mq_alloc_data *data,
- struct request_queue *q, gfp_t gfp, bool reserved,
- struct blk_mq_ctx *ctx,
- struct blk_mq_hw_ctx *hctx)
+ struct request_queue *q, unsigned int flags,
+ struct blk_mq_ctx *ctx, struct blk_mq_hw_ctx *hctx)
{
data->q = q;
- data->gfp = gfp;
- data->reserved = reserved;
+ data->flags = flags;
data->ctx = ctx;
data->hctx = hctx;
}
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 3457ac8c03e2..10bd8d0a9d9c 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -173,7 +173,7 @@ static struct mtip_cmd *mtip_get_int_command(struct driver_data *dd)
{
struct request *rq;
- rq = blk_mq_alloc_request(dd->queue, 0, __GFP_RECLAIM, true);
+ rq = blk_mq_alloc_request(dd->queue, 0, BLK_MQ_REQ_RESERVED);
return blk_mq_rq_to_pdu(rq);
}
diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 5c8ba5484d86..fa742dddf3f8 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -464,7 +464,7 @@ static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
struct request *rq;
struct bio *bio = rqd->bio;
- rq = blk_mq_alloc_request(q, bio_rw(bio), GFP_KERNEL, 0);
+ rq = blk_mq_alloc_request(q, bio_rw(bio), 0);
if (IS_ERR(rq))
return -ENOMEM;
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 9202d1a468d0..d5622f9164ad 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -470,7 +470,7 @@ static int nvme_nvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
struct bio *bio = rqd->bio;
struct nvme_nvm_command *cmd;
- rq = blk_mq_alloc_request(q, bio_rw(bio), GFP_KERNEL, 0);
+ rq = blk_mq_alloc_request(q, bio_rw(bio), 0);
if (IS_ERR(rq))
return -ENOMEM;
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index f3b53af789ef..b8a02221233c 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1041,7 +1041,7 @@ int __nvme_submit_sync_cmd(struct request_queue *q, struct nvme_command *cmd,
struct request *req;
int ret;
- req = blk_mq_alloc_request(q, write, GFP_KERNEL, false);
+ req = blk_mq_alloc_request(q, write, 0);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -1094,7 +1094,8 @@ static int nvme_submit_async_admin_req(struct nvme_dev *dev)
struct nvme_cmd_info *cmd_info;
struct request *req;
- req = blk_mq_alloc_request(dev->admin_q, WRITE, GFP_ATOMIC, true);
+ req = blk_mq_alloc_request(dev->admin_q, WRITE,
+ BLK_MQ_REQ_NOWAIT | BLK_MQ_REQ_RESERVED);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -1119,7 +1120,7 @@ static int nvme_submit_admin_async_cmd(struct nvme_dev *dev,
struct request *req;
struct nvme_cmd_info *cmd_rq;
- req = blk_mq_alloc_request(dev->admin_q, WRITE, GFP_KERNEL, false);
+ req = blk_mq_alloc_request(dev->admin_q, WRITE, 0);
if (IS_ERR(req))
return PTR_ERR(req);
@@ -1320,8 +1321,8 @@ static void nvme_abort_req(struct request *req)
if (!dev->abort_limit)
return;
- abort_req = blk_mq_alloc_request(dev->admin_q, WRITE, GFP_ATOMIC,
- false);
+ abort_req = blk_mq_alloc_request(dev->admin_q, WRITE,
+ BLK_MQ_REQ_NOWAIT);
if (IS_ERR(abort_req))
return;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index c25639e907bd..aa1a45985889 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -395,7 +395,7 @@ int bdev_read_page(struct block_device *bdev, sector_t sector,
if (!ops->rw_page || bdev_get_integrity(bdev))
return result;
- result = blk_queue_enter(bdev->bd_queue, GFP_KERNEL);
+ result = blk_queue_enter(bdev->bd_queue, false);
if (result)
return result;
result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, READ);
@@ -432,7 +432,7 @@ int bdev_write_page(struct block_device *bdev, sector_t sector,
if (!ops->rw_page || bdev_get_integrity(bdev))
return -EOPNOTSUPP;
- result = blk_queue_enter(bdev->bd_queue, GFP_KERNEL);
+ result = blk_queue_enter(bdev->bd_queue, false);
if (result)
return result;
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index daf17d70aeca..7fc9296b5742 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -188,8 +188,14 @@ void blk_mq_insert_request(struct request *, bool, bool, bool);
void blk_mq_free_request(struct request *rq);
void blk_mq_free_hctx_request(struct blk_mq_hw_ctx *, struct request *rq);
bool blk_mq_can_queue(struct blk_mq_hw_ctx *);
+
+enum {
+ BLK_MQ_REQ_NOWAIT = (1 << 0), /* return when out of requests */
+ BLK_MQ_REQ_RESERVED = (1 << 1), /* allocate from reserved pool */
+};
+
struct request *blk_mq_alloc_request(struct request_queue *q, int rw,
- gfp_t gfp, bool reserved);
+ unsigned int flags);
struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag);
struct cpumask *blk_mq_tags_cpumask(struct blk_mq_tags *tags);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c0d2b7927c1f..e711f294934c 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -794,7 +794,7 @@ extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
struct scsi_ioctl_command __user *);
-extern int blk_queue_enter(struct request_queue *q, gfp_t gfp);
+extern int blk_queue_enter(struct request_queue *q, bool nowait);
extern void blk_queue_exit(struct request_queue *q);
extern void blk_start_queue(struct request_queue *q);
extern void blk_stop_queue(struct request_queue *q);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-24 10:56:55 +0300