560 			  struct metapath *mp, struct iomap *iomap)  in gfs2_hole_size()  argument
567 		iomap->length = args.blocks << inode->i_blkbits;  in gfs2_hole_size()
626 static int gfs2_iomap_alloc(struct inode *inode, struct iomap *iomap,  in gfs2_iomap_alloc()  argument
634 	size_t dblks = iomap->length >> inode->i_blkbits;  in gfs2_iomap_alloc()
730 			iomap->addr = bn << inode->i_blkbits;  in gfs2_iomap_alloc()
731 			iomap->flags |= IOMAP_F_MERGED | IOMAP_F_NEW;  in gfs2_iomap_alloc()
736 	} while (iomap->addr == IOMAP_NULL_ADDR);  in gfs2_iomap_alloc()
738 	iomap->type = IOMAP_MAPPED;  in gfs2_iomap_alloc()
739 	iomap->length = (u64)dblks << inode->i_blkbits;  in gfs2_iomap_alloc()
806 			  unsigned flags, struct iomap *iomap,  in gfs2_iomap_get()  argument
829 	iomap->private = dibh;  in gfs2_iomap_get()
837 			iomap->length = max_size;  in gfs2_iomap_get()
845 					iomap->offset = pos;  in gfs2_iomap_get()
846 					iomap->length = length;  in gfs2_iomap_get()
850 			iomap->length = size;  in gfs2_iomap_get()
852 		iomap->addr = (ip->i_no_addr << inode->i_blkbits) +  in gfs2_iomap_get()
854 		iomap->type = IOMAP_INLINE;  in gfs2_iomap_get()
855 		iomap->inline_data = dibh->b_data + sizeof(struct gfs2_dinode);  in gfs2_iomap_get()
861 	iomap->offset = lblock << inode->i_blkbits;  in gfs2_iomap_get()
864 	iomap->length = len << inode->i_blkbits;  in gfs2_iomap_get()
890 	iomap->addr = be64_to_cpu(*ptr) << inode->i_blkbits;  in gfs2_iomap_get()
891 	iomap->length = len << inode->i_blkbits;  in gfs2_iomap_get()
892 	iomap->type = IOMAP_MAPPED;  in gfs2_iomap_get()
893 	iomap->flags |= IOMAP_F_MERGED;  in gfs2_iomap_get()
895 		iomap->flags |= IOMAP_F_GFS2_BOUNDARY;  in gfs2_iomap_get()
898 	iomap->bdev = inode->i_sb->s_bdev;  in gfs2_iomap_get()
906 	iomap->addr = IOMAP_NULL_ADDR;  in gfs2_iomap_get()
907 	iomap->type = IOMAP_HOLE;  in gfs2_iomap_get()
912 			ret = gfs2_hole_size(inode, lblock, len, mp, iomap);  in gfs2_iomap_get()
914 			iomap->length = size - pos;  in gfs2_iomap_get()
923 		if (alloc_size < iomap->length)  in gfs2_iomap_get()
924 			iomap->length = alloc_size;  in gfs2_iomap_get()
927 			ret = gfs2_hole_size(inode, lblock, len, mp, iomap);  in gfs2_iomap_get()
974 				struct iomap *iomap)  in gfs2_iomap_journaled_page_done()  argument
983 				  struct iomap *iomap)  in gfs2_iomap_begin_write()  argument
999 	ret = gfs2_iomap_get(inode, pos, length, flags, iomap, &mp);  in gfs2_iomap_begin_write()
1003 	alloc_required = unstuff || iomap->type == IOMAP_HOLE;  in gfs2_iomap_begin_write()
1006 		gfs2_write_calc_reserv(ip, iomap->length, &data_blocks,  in gfs2_iomap_begin_write()
1033 	ret = gfs2_trans_begin(sdp, rblocks, iomap->length >> inode->i_blkbits);  in gfs2_iomap_begin_write()
1042 		brelse(iomap->private);  in gfs2_iomap_begin_write()
1043 		iomap->private = NULL;  in gfs2_iomap_begin_write()
1044 		ret = gfs2_iomap_get(inode, iomap->offset, iomap->length,  in gfs2_iomap_begin_write()
1045 				     flags, iomap, &mp);  in gfs2_iomap_begin_write()
1050 	if (iomap->type == IOMAP_HOLE) {  in gfs2_iomap_begin_write()
1051 		ret = gfs2_iomap_alloc(inode, iomap, flags, &mp);  in gfs2_iomap_begin_write()
1055 			punch_hole(ip, iomap->offset, iomap->length);  in gfs2_iomap_begin_write()
1061 		iomap->page_done = gfs2_iomap_journaled_page_done;  in gfs2_iomap_begin_write()
1073 	if (iomap->private)  in gfs2_iomap_begin_write()
1074 		brelse(iomap->private);  in gfs2_iomap_begin_write()
1081 			    unsigned flags, struct iomap *iomap)  in gfs2_iomap_begin()  argument
1087 	iomap->flags |= IOMAP_F_BUFFER_HEAD;  in gfs2_iomap_begin()
1091 		ret = gfs2_iomap_begin_write(inode, pos, length, flags, iomap);  in gfs2_iomap_begin()
1093 		ret = gfs2_iomap_get(inode, pos, length, flags, iomap, &mp);  in gfs2_iomap_begin()
1100 		    iomap->type != IOMAP_MAPPED)  in gfs2_iomap_begin()
1103 	trace_gfs2_iomap_end(ip, iomap, ret);  in gfs2_iomap_begin()
1108 			  ssize_t written, unsigned flags, struct iomap *iomap)  in gfs2_iomap_end()  argument
1113 	struct buffer_head *dibh = iomap->private;  in gfs2_iomap_end()
1118 	if (iomap->type != IOMAP_INLINE) {  in gfs2_iomap_end()
1135 	if (length != written && (iomap->flags & IOMAP_F_NEW)) {  in gfs2_iomap_end()
1190 	struct iomap iomap = { };  in gfs2_block_map()  local
1199 		ret = gfs2_iomap_get(inode, pos, length, IOMAP_WRITE, &iomap, &mp);  in gfs2_block_map()
1200 		if (!ret && iomap.type == IOMAP_HOLE)  in gfs2_block_map()
1201 			ret = gfs2_iomap_alloc(inode, &iomap, IOMAP_WRITE, &mp);  in gfs2_block_map()
1204 		ret = gfs2_iomap_get(inode, pos, length, 0, &iomap, &mp);  in gfs2_block_map()
1210 	if (iomap.length > bh_map->b_size) {  in gfs2_block_map()
1211 		iomap.length = bh_map->b_size;  in gfs2_block_map()
1212 		iomap.flags &= ~IOMAP_F_GFS2_BOUNDARY;  in gfs2_block_map()
1214 	if (iomap.addr != IOMAP_NULL_ADDR)  in gfs2_block_map()
1215 		map_bh(bh_map, inode->i_sb, iomap.addr >> inode->i_blkbits);  in gfs2_block_map()
1216 	bh_map->b_size = iomap.length;  in gfs2_block_map()
1217 	if (iomap.flags & IOMAP_F_GFS2_BOUNDARY)  in gfs2_block_map()
1219 	if (iomap.flags & IOMAP_F_NEW)  in gfs2_block_map()
1424 			 struct iomap *iomap)  in gfs2_iomap_get_alloc()  argument
1429 	ret = gfs2_iomap_get(inode, pos, length, IOMAP_WRITE, iomap, &mp);  in gfs2_iomap_get_alloc()
1430 	if (!ret && iomap->type == IOMAP_HOLE)  in gfs2_iomap_get_alloc()
1431 		ret = gfs2_iomap_alloc(inode, iomap, IOMAP_WRITE, &mp);  in gfs2_iomap_get_alloc()