merge_bvec_fn 248 include/linux/blkdev.h typedef int (merge_bvec_fn) (struct request_queue *, struct bvec_merge_data *, merge_bvec_fn 330 include/linux/blkdev.h merge_bvec_fn *merge_bvec_fn; merge_bvec_fn 1036 include/linux/blkdev.h extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *);