sys/kern/vfs_cluster.c

92 cluster_read(struct vnode *vp, u_quad_t filesize, daddr_t lblkno, long size,
116 	if (((u_quad_t)(lblkno + maxra + 1) * size) > filesize)
117 		maxra = (filesize / size) - lblkno;
122 	*bpp = reqbp = bp = getblk(vp, lblkno, size, 0, 0, gbflags);
125 	origblkno = lblkno;
145 				rbp = gbincore(&vp->v_bufobj, lblkno+i);
166 			lblkno += i;
204 	    		error = VOP_BMAP(vp, lblkno, NULL,
222 			bp = cluster_rbuild(vp, filesize, lblkno,
224 			lblkno += (bp->b_bufsize / size);
228 			lblkno += 1;
258 	while (lblkno < (origblkno + maxra)) {
259 		error = VOP_BMAP(vp, lblkno, NULL, &blkno, &ncontig, NULL);
273 			rbp = cluster_rbuild(vp, filesize, lblkno, blkno,
275 			lblkno += (rbp->b_bufsize / size);
281 			rbp = getblk(vp, lblkno, size, 0, 0, gbflags);
282 			lblkno += 1;