diff options
| -rw-r--r-- | drivers/block/brd.c | 4 | ||||
| -rw-r--r-- | drivers/nvdimm/pmem.c | 1 | ||||
| -rw-r--r-- | drivers/s390/block/dcssblk.c | 1 | ||||
| -rw-r--r-- | fs/block_dev.c | 5 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 2 |
5 files changed, 10 insertions, 3 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c index f5b0d6f4e09fa..dd96a935fba04 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -509,7 +509,9 @@ static struct brd_device *brd_alloc(int i) blk_queue_max_discard_sectors(brd->brd_queue, UINT_MAX); brd->brd_queue->limits.discard_zeroes_data = 1; queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, brd->brd_queue); - +#ifdef CONFIG_BLK_DEV_RAM_DAX + queue_flag_set_unlocked(QUEUE_FLAG_DAX, brd->brd_queue); +#endif disk = brd->brd_disk = alloc_disk(max_part); if (!disk) goto out_free_queue; diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 608fc4464574e..53b701b2f73ee 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -283,6 +283,7 @@ static int pmem_attach_disk(struct device *dev, blk_queue_max_hw_sectors(q, UINT_MAX); blk_queue_bounce_limit(q, BLK_BOUNCE_ANY); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); + queue_flag_set_unlocked(QUEUE_FLAG_DAX, q); q->queuedata = pmem; disk = alloc_disk_node(0, nid); diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index bed53c46dd906..093e9e18e7e74 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -618,6 +618,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char dev_info->gd->driverfs_dev = &dev_info->dev; blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request); blk_queue_logical_block_size(dev_info->dcssblk_queue, 4096); + queue_flag_set_unlocked(QUEUE_FLAG_DAX, dev_info->dcssblk_queue); seg_byte_size = (dev_info->end - dev_info->start + 1); set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors diff --git a/fs/block_dev.c b/fs/block_dev.c index 71ccab1d22c61..d012be4ab9779 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -493,7 +493,7 @@ long bdev_direct_access(struct block_device *bdev, struct blk_dax_ctl *dax) if (size < 0) return size; - if (!ops->direct_access) + if (!blk_queue_dax(bdev_get_queue(bdev)) || !ops->direct_access) return -EOPNOTSUPP; if ((sector + DIV_ROUND_UP(size, 512)) > part_nr_sects_read(bdev->bd_part)) @@ -1287,7 +1287,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) bdev->bd_disk = disk; bdev->bd_queue = disk->queue; bdev->bd_contains = bdev; - if (IS_ENABLED(CONFIG_BLK_DEV_DAX) && disk->fops->direct_access) + if (IS_ENABLED(CONFIG_BLK_DEV_DAX) && + blk_queue_dax(disk->queue)) bdev->bd_inode->i_flags = S_DAX; else bdev->bd_inode->i_flags = 0; diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index d116d3b52c732..9d84c98b5c797 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -505,6 +505,7 @@ struct request_queue { #define QUEUE_FLAG_WC 23 /* Write back caching */ #define QUEUE_FLAG_FUA 24 /* device supports FUA writes */ #define QUEUE_FLAG_FLUSH_NQ 25 /* flush not queueuable */ +#define QUEUE_FLAG_DAX 26 /* device supports DAX */ #define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \ (1 << QUEUE_FLAG_STACKABLE) | \ @@ -594,6 +595,7 @@ static inline void queue_flag_clear(unsigned int flag, struct request_queue *q) #define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags) #define blk_queue_secdiscard(q) (blk_queue_discard(q) && \ test_bit(QUEUE_FLAG_SECDISCARD, &(q)->queue_flags)) +#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags) #define blk_noretry_request(rq) \ ((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \ |