13 #define AFS_MIN_DYNROOT_CELL_INO 4 /* Allow for ., .., @cell, .@cell */
96 	struct afs_cell *cell = NULL;  in afs_dynroot_lookup_cell()  local
111 	cell = afs_lookup_cell(net, name, len, NULL, false,  in afs_dynroot_lookup_cell()
113 	if (IS_ERR(cell)) {  in afs_dynroot_lookup_cell()
114 		ret = PTR_ERR(cell);  in afs_dynroot_lookup_cell()
118 	inode = afs_iget_pseudo_dir(dir->i_sb, cell->dynroot_ino * 2 + dotted);  in afs_dynroot_lookup_cell()
124 	dentry->d_fsdata = cell;  in afs_dynroot_lookup_cell()
128 	afs_unuse_cell(cell, afs_cell_trace_unuse_lookup_dynroot);  in afs_dynroot_lookup_cell()
152 	    memcmp(dentry->d_name.name, "@cell", 5) == 0)  in afs_dynroot_lookup()
156 	    memcmp(dentry->d_name.name, ".@cell", 6) == 0)  in afs_dynroot_lookup()
168 	struct afs_cell *cell = dentry->d_fsdata;  in afs_dynroot_d_release()  local
170 	afs_unuse_cell(cell, afs_cell_trace_unuse_dynroot_mntpt);  in afs_dynroot_d_release()
174  * Keep @cell symlink dentries around, but only keep cell autodirs when they're
181 	if (name->len == 5 && memcmp(name->name, "@cell", 5) == 0)  in afs_dynroot_delete_dentry()
183 	if (name->len == 6 && memcmp(name->name, ".@cell", 6) == 0)  in afs_dynroot_delete_dentry()
196 	struct afs_cell *cell = arg;  in afs_atcell_delayed_put_cell()  local
198 	afs_put_cell(cell, afs_cell_trace_put_atcell);  in afs_atcell_delayed_put_cell()
202  * Read @cell or .@cell symlinks.
208 	struct afs_cell *cell;  in afs_atcell_get_link()  local
218 		cell = rcu_dereference(net->ws_cell);  in afs_atcell_get_link()
220 			name = cell->name - 1;  in afs_atcell_get_link()
222 			name = cell->name;  in afs_atcell_get_link()
229 	cell = rcu_dereference_protected(net->ws_cell, lockdep_is_held(&net->cells_lock));  in afs_atcell_get_link()
231 		name = cell->name - 1;  in afs_atcell_get_link()
233 		name = cell->name;  in afs_atcell_get_link()
234 	afs_get_cell(cell, afs_cell_trace_get_atcell);  in afs_atcell_get_link()
235 	set_delayed_call(done, afs_atcell_delayed_put_cell, cell);  in afs_atcell_get_link()
246  * Create an inode for the @cell or .@cell symlinks.
280  * Transcribe the cell database into readdir content under the RCU read lock.
281  * Each cell produces two entries, one prefixed with a dot and one not.
285 	const struct afs_cell *cell;  in afs_dynroot_readdir_cells()  local
293 		cell = idr_get_next(&net->cells_dyn_ino, &ix);  in afs_dynroot_readdir_cells()
294 		if (!cell)  in afs_dynroot_readdir_cells()
296 		if (READ_ONCE(cell->state) == AFS_CELL_REMOVING ||  in afs_dynroot_readdir_cells()
297 		    READ_ONCE(cell->state) == AFS_CELL_DEAD) {  in afs_dynroot_readdir_cells()
307 		_debug("pos %llu -> cell %u", ctx->pos, cell->dynroot_ino);  in afs_dynroot_readdir_cells()
310 			if (!dir_emit(ctx, cell->name, cell->name_len,  in afs_dynroot_readdir_cells()
311 				      cell->dynroot_ino, DT_DIR))  in afs_dynroot_readdir_cells()
316 			if (!dir_emit(ctx, cell->name - 1, cell->name_len + 1,  in afs_dynroot_readdir_cells()
317 				      cell->dynroot_ino + 1, DT_DIR))  in afs_dynroot_readdir_cells()
327  * dotted and undotted, along with @cell and .@cell links if configured.
339 		    !dir_emit(ctx, "@cell", 5, 2, DT_LNK))  in afs_dynroot_readdir()
345 		    !dir_emit(ctx, ".@cell", 6, 3, DT_LNK))  in afs_dynroot_readdir()