fs/nandfs/nandfs_segment.c

83 create_segment(struct nandfs_seginfo *seginfo)
93 	fsdev = seginfo->fsdev;
94 	prev = seginfo->curseg;
146 		seginfo->reiterate = 1;
166 	bzero(bp->b_data, seginfo->fsdev->nd_blocksize);
167 	bp->b_bufobj = &seginfo->fsdev->nd_devvp->v_bufobj;
181 		LIST_INSERT_HEAD(&seginfo->seg_list, seg, seg_link);
185 	seginfo->curseg = seg;
191 delete_segment(struct nandfs_seginfo *seginfo)
196 	LIST_FOREACH_SAFE(seg, &seginfo->seg_list, seg_link, tseg) {
212 create_seginfo(struct nandfs_device *fsdev, struct nandfs_seginfo **seginfo)
222 	*seginfo = info;
228 delete_seginfo(struct nandfs_seginfo *seginfo)
232 	nffsdev = seginfo->fsdev;
233 	delete_segment(seginfo);
235 	free(seginfo, M_DEVBUF);
241 nandfs_create_superroot_block(struct nandfs_seginfo *seginfo,
247 	bp = nandfs_geteblk(seginfo->fsdev->nd_blocksize, GB_NOWAIT_BD);
249 	bzero(bp->b_data, seginfo->fsdev->nd_blocksize);
250 	bp->b_bufobj = &seginfo->fsdev->nd_devvp->v_bufobj;
253 	if (!(seginfo->curseg) || !seginfo->curseg->num_blocks) {
254 		error = create_segment(seginfo);
263 	TAILQ_INSERT_TAIL(&seginfo->curseg->data, bp, b_cluster.cluster_entry);
265 	seginfo->curseg->nblocks++;
266 	seginfo->curseg->num_blocks--;
267 	seginfo->blocks++;
274 nandfs_add_superroot(struct nandfs_seginfo *seginfo)
283 	fsdev = seginfo->fsdev;
285 	error = nandfs_create_superroot_block(seginfo, &bp);
310 	bp->b_bufobj = &seginfo->fsdev->nd_devvp->v_bufobj;
320 nandfs_add_segsum_block(struct nandfs_seginfo *seginfo, struct buf **newbp)
327 	if (!(seginfo->curseg) || seginfo->curseg->num_blocks <= 1) {
328 		error = create_segment(seginfo);
334 		*newbp = TAILQ_FIRST(&seginfo->curseg->segsum);
338 	fsdev = seginfo->fsdev;
339 	blk = nandfs_block_to_dblock(fsdev, seginfo->curseg->start_block +
340 	    seginfo->curseg->segsum_blocks);
344 	bzero(bp->b_data, seginfo->fsdev->nd_blocksize);
345 	bp->b_bufobj = &seginfo->fsdev->nd_devvp->v_bufobj;
348 	TAILQ_INSERT_TAIL(&seginfo->curseg->segsum, bp,
350 	seginfo->curseg->num_blocks--;
352 	seginfo->curseg->segsum_blocks++;
353 	seginfo->curseg->bytes_left = seginfo->fsdev->nd_blocksize;
354 	seginfo->curseg->current_off = bp->b_data;
355 	seginfo->blocks++;
365 nandfs_add_blocks(struct nandfs_seginfo *seginfo, struct nandfs_node *node,
372 	if (!(seginfo->curseg) || !seginfo->curseg->num_blocks) {
373 		error = create_segment(seginfo);
381 	if (seginfo->curseg->bytes_left < sizeof(union nandfs_binfo)) {
382 		error = nandfs_add_segsum_block(seginfo, &seg_bp);
389 	binfo = (union nandfs_binfo *)seginfo->curseg->current_off;
404 	seginfo->curseg->bytes_left -= sizeof(union nandfs_binfo);
405 	seginfo->curseg->segsum_bytes += sizeof(union nandfs_binfo);
406 	seginfo->curseg->current_off = (char *)binfo;
408 	TAILQ_INSERT_TAIL(&seginfo->curseg->data, bp, b_cluster.cluster_entry);
410 	seginfo->curseg->nbinfos++;
411 	seginfo->curseg->nblocks++;
412 	seginfo->curseg->num_blocks--;
413 	seginfo->blocks++;
416 	    __func__, bp, seginfo->curseg->nblocks,
417 	    seginfo->curseg->num_blocks));
422 nandfs_iterate_dirty_buf(struct vnode *vp, struct nandfs_seginfo *seginfo,
446 			nandfs_add_blocks(seginfo, node, bp);
455     struct nandfs_seginfo *seginfo)
471 		nandfs_iterate_dirty_buf(vp, seginfo, hold);
477 nandfs_iterate_dirty_vnodes(struct mount *mp, struct nandfs_seginfo *seginfo)
506 			error = nandfs_iterate_dirty_buf(vp, seginfo, 0);
627 nandfs_seginfo_assign_pblk(struct nandfs_seginfo *seginfo)
632 	LIST_FOREACH(nfsseg, &seginfo->seg_list, seg_link) {
863 clean_seginfo(struct nandfs_seginfo *seginfo, uint8_t unlock)
867 	DPRINTF(SYNC, ("%s: seginfo %p\n", __func__, seginfo));
869 	LIST_FOREACH(seg, &seginfo->seg_list, seg_link) {
875 save_seginfo(struct nandfs_seginfo *seginfo, uint8_t unlock)
882 	fsdev = seginfo->fsdev;
884 	DPRINTF(SYNC, ("%s: seginfo %p\n", __func__, seginfo));
886 	LIST_FOREACH(seg, &seginfo->seg_list, seg_link) {
910 		clean_seginfo(seginfo, unlock);
981 	struct nandfs_seginfo *seginfo = NULL;
1007 	create_seginfo(fsdev, &seginfo);
1018 		error = nandfs_iterate_dirty_buf(vp, seginfo, 0);
1020 			clean_seginfo(seginfo, 0);
1021 			delete_seginfo(seginfo);
1035 			clean_seginfo(seginfo, 0);
1036 			delete_seginfo(seginfo);
1048 	if (seginfo->blocks) {
1054 			clean_seginfo(seginfo, 0);
1055 			delete_seginfo(seginfo);
1065 		nandfs_seginfo_assign_pblk(seginfo);
1069 		    &ifile->nn_inode, seginfo->blocks);
1071 			clean_seginfo(seginfo, 0);
1072 			delete_seginfo(seginfo);
1082 		LIST_FOREACH(seg, &seginfo->seg_list, seg_link)
1087 		error = save_seginfo(seginfo, 0);
1089 			clean_seginfo(seginfo, 0);
1090 			delete_seginfo(seginfo);
1103 	delete_seginfo(seginfo);
1121 	struct nandfs_seginfo *seginfo = NULL;
1132 	create_seginfo(fsdev, &seginfo);
1145 	nandfs_iterate_system_vnode(gc, seginfo);
1146 	nandfs_iterate_dirty_vnodes(nmp->nm_vfs_mountp, seginfo);
1147 	nandfs_iterate_system_vnode(ifile, seginfo);
1148 	nandfs_iterate_system_vnode(su, seginfo);
1151 	if (seginfo->blocks || flags) {
1156 			clean_seginfo(seginfo, 0);
1157 			delete_seginfo(seginfo);
1162 		nandfs_iterate_system_vnode(cp, seginfo);
1163 		nandfs_iterate_system_vnode(su, seginfo);
1165 		nandfs_iterate_system_vnode(dat, seginfo);
1168 		seginfo->reiterate = 0;
1169 		nandfs_iterate_system_vnode(su, seginfo);
1171 		nandfs_iterate_system_vnode(dat, seginfo);
1173 		if (seginfo->reiterate)
1175 		if (!(seginfo->curseg) || !seginfo->curseg->num_blocks) {
1176 			error = create_segment(seginfo);
1178 				clean_seginfo(seginfo, 0);
1179 				delete_seginfo(seginfo);
1186 		nandfs_seginfo_assign_pblk(seginfo);
1189 		error = nandfs_add_superroot(seginfo);
1191 			clean_seginfo(seginfo, 0);
1192 			delete_seginfo(seginfo);
1195 		KASSERT(!(seginfo->reiterate), ("reiteration after superroot"));
1199 		    &ifile->nn_inode, seginfo->blocks);
1201 		LIST_FOREACH(seg, &seginfo->seg_list, seg_link)
1206 		error = save_seginfo(seginfo, 1);
1208 			clean_seginfo(seginfo, 1);
1209 			delete_seginfo(seginfo);
1223 	delete_seginfo(seginfo);