diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blk-integrity.h | 5 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 18 |
2 files changed, 18 insertions, 5 deletions
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h index fd3f3c8c0fcd..ea6d7d322ae3 100644 --- a/include/linux/blk-integrity.h +++ b/include/linux/blk-integrity.h @@ -8,11 +8,6 @@ struct request; -/* - * Maximum contiguous integrity buffer allocation. - */ -#define BLK_INTEGRITY_MAX_SIZE SZ_2M - enum blk_integrity_flags { BLK_INTEGRITY_NOVERIFY = 1 << 0, BLK_INTEGRITY_NOGENERATE = 1 << 1, diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index dec0acaed6e6..11857ae13d10 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1881,6 +1881,24 @@ static inline int bio_split_rw_at(struct bio *bio, return bio_split_io_at(bio, lim, segs, max_bytes, lim->dma_alignment); } +/* + * Maximum contiguous integrity buffer allocation. + */ +#define BLK_INTEGRITY_MAX_SIZE SZ_2M + +/* + * Maximum size of I/O that needs a block layer integrity buffer. Limited + * by the number of intervals for which we can fit the integrity buffer into + * the buffer size. Because the buffer is a single segment it is also limited + * by the maximum segment size. + */ +static inline unsigned int max_integrity_io_size(struct queue_limits *lim) +{ + return min_t(unsigned int, lim->max_segment_size, + (BLK_INTEGRITY_MAX_SIZE / lim->integrity.metadata_size) << + lim->integrity.interval_exp); +} + #define DEFINE_IO_COMP_BATCH(name) struct io_comp_batch name = { } #endif /* _LINUX_BLKDEV_H */ |