search for: blk_def_max_sectors

Hi, For virtio block device, actually there is no a hard limit for max request size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);. But it doesn't work, because there is a default upper limitation BLK_DEF_MAX_SECTORS (1280 sectors). So this series want to add a new helper blk_queue_max_hw_sectors_no_limit to set a proper max reqeust size. Weiping Zhang (2): blk-setting: add new helper blk_queue_max_hw_sectors_no_limit virtio_blk: add new module parameter to set max request size block/blk-settings.c...

Hi, For virtio block device, actually there is no a hard limit for max request size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);. But it doesn't work, because there is a default upper limitation BLK_DEF_MAX_SECTORS (1280 sectors). So this series want to add a new helper blk_queue_max_hw_sectors_no_limit to set a proper max reqeust size. Weiping Zhang (2): blk-setting: add new helper blk_queue_max_hw_sectors_no_limit virtio_blk: add new module parameter to set max request size block/blk-settings.c...

On 4/5/18 4:09 AM, Weiping Zhang wrote: > Hi, > > For virtio block device, actually there is no a hard limit for max request > size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);. > But it doesn't work, because there is a default upper limitation > BLK_DEF_MAX_SECTORS (1280 sectors). So this series want to add a new helper > blk_queue_max_hw_sectors_no_limit to set a proper max reqeust size. > > Weiping Zhang (2): > blk-setting: add new helper blk_queue_max_hw_sectors_no_limit > virtio_blk: add new module parameter to set max request size &gt...

...;s_bdev, block << (sb->s_blocksize_bits - 9), nr_blocks << (sb->s_blocksize_bits - 9), gfp_mask); } extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm); enum blk_default_limits { BLK_MAX_SEGMENTS = 128, BLK_SAFE_MAX_SECTORS = 255, BLK_DEF_MAX_SECTORS = 1024, BLK_MAX_SEGMENT_SIZE = 65536, BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL, }; #define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist) static inline unsigned long queue_bounce_pfn(struct request_queue *q) { return q->limits.bounce_pfn; } static inline unsigned...

...;s_bdev, block << (sb->s_blocksize_bits - 9), nr_blocks << (sb->s_blocksize_bits - 9), gfp_mask); } extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm); enum blk_default_limits { BLK_MAX_SEGMENTS = 128, BLK_SAFE_MAX_SECTORS = 255, BLK_DEF_MAX_SECTORS = 1024, BLK_MAX_SEGMENT_SIZE = 65536, BLK_SEG_BOUNDARY_MASK = 0xFFFFFFFFUL, }; #define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist) static inline unsigned long queue_bounce_pfn(struct request_queue *q) { return q->limits.bounce_pfn; } static inline unsigned...