diff options
Diffstat (limited to 'block/blk.h')
| -rw-r--r-- | block/blk.h | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/block/blk.h b/block/blk.h index 3b53e44b967e..8b3591aee0a5 100644 --- a/block/blk.h +++ b/block/blk.h @@ -6,6 +6,7 @@ #include <linux/blk-mq.h> #include <linux/part_stat.h> #include <linux/blk-crypto.h> +#include <linux/memblock.h> /* for max_pfn/max_low_pfn */ #include <xen/xen.h> #include "blk-crypto-internal.h" #include "blk-mq.h" @@ -311,18 +312,20 @@ static inline void blk_throtl_bio_endio(struct bio *bio) { } static inline void blk_throtl_stat_add(struct request *rq, u64 time) { } #endif -#ifdef CONFIG_BOUNCE -extern int init_emergency_isa_pool(void); -extern void blk_queue_bounce(struct request_queue *q, struct bio **bio); -#else -static inline int init_emergency_isa_pool(void) +void __blk_queue_bounce(struct request_queue *q, struct bio **bio); + +static inline bool blk_queue_may_bounce(struct request_queue *q) { - return 0; + return IS_ENABLED(CONFIG_BOUNCE) && + q->limits.bounce == BLK_BOUNCE_HIGH && + max_low_pfn >= max_pfn; } + static inline void blk_queue_bounce(struct request_queue *q, struct bio **bio) { + if (unlikely(blk_queue_may_bounce(q) && bio_has_data(*bio))) + __blk_queue_bounce(q, bio); } -#endif /* CONFIG_BOUNCE */ #ifdef CONFIG_BLK_CGROUP_IOLATENCY extern int blk_iolatency_init(struct request_queue *q); @@ -346,7 +349,6 @@ char *disk_name(struct gendisk *hd, int partno, char *buf); #define ADDPART_FLAG_NONE 0 #define ADDPART_FLAG_RAID 1 #define ADDPART_FLAG_WHOLEDISK 2 -void delete_partition(struct block_device *part); int bdev_add_partition(struct block_device *bdev, int partno, sector_t start, sector_t length); int bdev_del_partition(struct block_device *bdev, int partno); |