diff options
Diffstat (limited to 'include/linux/blkdev_compat.h')
| -rw-r--r-- | include/linux/blkdev_compat.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/linux/blkdev_compat.h b/include/linux/blkdev_compat.h index 3707fad08..56a1bafe9 100644 --- a/include/linux/blkdev_compat.h +++ b/include/linux/blkdev_compat.h @@ -200,6 +200,53 @@ __blk_rq_bytes(struct request *req) #define blk_queue_stackable(q) ((q)->request_fn == NULL) #endif +/* + * 2.6.34 API change, + * The blk_queue_max_hw_sectors() function replaces blk_queue_max_sectors(). + */ +#ifndef HAVE_BLK_QUEUE_MAX_HW_SECTORS +#define blk_queue_max_hw_sectors __blk_queue_max_hw_sectors +static inline void +__blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_sectors) +{ + blk_queue_max_sectors(q, max_hw_sectors); +} +#endif + +/* + * 2.6.34 API change, + * The blk_queue_max_segments() function consolidates + * blk_queue_max_hw_segments() and blk_queue_max_phys_segments(). + */ +#ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS +#define blk_queue_max_segments __blk_queue_max_segments +static inline void +__blk_queue_max_segments(struct request_queue *q, unsigned short max_segments) +{ + blk_queue_max_phys_segments(q, max_segments); + blk_queue_max_hw_segments(q, max_segments); +} +#endif + +/* + * 2.6.30 API change, + * The blk_queue_physical_block_size() function was introduced to + * indicate the smallest I/O the device can write without incurring + * a read-modify-write penalty. For older kernels this is a no-op. + */ +#ifndef HAVE_BLK_QUEUE_PHYSICAL_BLOCK_SIZE +#define blk_queue_physical_block_size(q, x) ((void)(0)) +#endif + +/* + * 2.6.30 API change, + * The blk_queue_io_opt() function was added to indicate the optimal + * I/O size for the device. For older kernels this is a no-op. + */ +#ifndef HAVE_BLK_QUEUE_IO_OPT +#define blk_queue_io_opt(q, x) ((void)(0)) +#endif + #ifndef HAVE_GET_DISK_RO static inline int get_disk_ro(struct gendisk *disk) |