Typedef at include/linux/blk_types.h, line 20 References: block/blk-crypto-fallback.c, line 55 drivers/md/bcache/request.c, line 684 drivers/md/bcache/request.c, line 1071 drivers/md/dm-bio-record.h, line 25 drivers/md/dm-cache-target.c, line 216 drivers/md/dm-cache-target.c, line 220 drivers/md/dm-clone-target.c, line 534 drivers/md/dm-snap.c, line 234 drivers/md/dm-thin.c, line 827 drivers/md/dm-thin.c, line 1256 drivers/md/dm-thin.c, line 1257 drivers/md/dm-verity.h, line 75 fs/btrfs/check-integrity.c, line 155 fs/btrfs/disk-io.c, line 74 fs/btrfs/extent_io.c, line 3302 fs/btrfs/extent_io.c, line 3373 fs/btrfs/volumes.h, line 349 fs/f2fs/f2fs.h, line 1793 fs/gfs2/lops.c, line 265 fs/gfs2/lops.c, line 297 fs/jfs/jfs_logmgr.c, line 181 fs/nfs/blocklayout/blocklayout.c, line 120 fs/nfs/blocklayout/blocklayout.c, line 143 include/linux/blk_types.h, line 20 include/linux/blk_types.h, line 230 include/linux/swap.h, line 423 mm/page_io.c, line 286