1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2002, 2003 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * derived in small part from linux/fs/ext2/namei.c
23 * Copyright (C) 1991, 1992 Linus Torvalds
25 * Big-endian to little-endian byte-swapping/bitmaps by
26 * David S. Miller (davem@caip.rutgers.edu), 1995
27 * Directory entry file type support and forward compatibility hooks
28 * for B-tree directories by Theodore Ts'o (tytso@mit.edu), 1998
32 #include <linux/sched.h>
34 #include <linux/smp_lock.h>
35 #include <linux/quotaops.h>
36 #include <linux/highmem.h>
37 #include <linux/pagemap.h>
39 #define DEBUG_SUBSYSTEM S_LLITE
41 #include <linux/obd_support.h>
42 #include <linux/lustre_lite.h>
43 #include <linux/lustre_dlm.h>
44 #include "llite_internal.h"
48 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
49 static int ll_test_inode(struct inode *inode, unsigned long ino, void *opaque)
51 static int ll_test_inode(struct inode *inode, void *opaque)
54 static int last_ino, last_gen, last_count;
55 struct lustre_md *md = opaque;
57 if (!(md->body->valid & (OBD_MD_FLGENER | OBD_MD_FLID))) {
58 CERROR("MDS body missing inum or generation\n");
62 if (last_ino == md->body->ino && last_gen == md->body->generation &&
67 CDEBUG(D_VFSTRACE, "compared %u/%u %u times\n",
68 last_ino, last_gen, last_count);
70 last_ino = md->body->ino;
71 last_gen = md->body->generation;
73 "comparing inode %p ino %lu/%u to body %u/%u\n",
74 inode, inode->i_ino, inode->i_generation,
75 md->body->ino, md->body->generation);
78 if (inode->i_generation != md->body->generation)
81 /* Apply the attributes in 'opaque' to this inode */
82 ll_update_inode(inode, md->body, md->lsm);
86 extern struct dentry_operations ll_d_ops;
88 int ll_unlock(__u32 mode, struct lustre_handle *lockh)
92 ldlm_lock_decref(lockh, mode);
97 /* Get an inode by inode number (already instantiated by the intent lookup).
98 * Returns inode or NULL
100 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
101 int ll_set_inode(struct inode *inode, void *opaque)
103 ll_read_inode2(inode, opaque);
106 struct inode *ll_iget(struct super_block *sb, ino_t hash,
107 struct lustre_md *md)
112 inode = iget5_locked(sb, hash, ll_test_inode, ll_set_inode, md);
115 if (inode->i_state & I_NEW)
116 unlock_new_inode(inode);
117 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
118 inode->i_generation, inode);
124 struct inode *ll_iget(struct super_block *sb, ino_t hash,
125 struct lustre_md *md)
129 inode = iget4(sb, hash, ll_test_inode, md);
131 CDEBUG(D_VFSTRACE, "inode: %lu/%u(%p)\n", inode->i_ino,
132 inode->i_generation, inode);
137 int ll_mdc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
138 void *data, int flag)
141 struct lustre_handle lockh;
145 case LDLM_CB_BLOCKING:
146 ldlm_lock2handle(lock, &lockh);
147 rc = ldlm_cli_cancel(&lockh);
149 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
153 case LDLM_CB_CANCELING: {
154 struct inode *inode = ll_inode_from_lock(lock);
156 /* Invalidate all dentries associated with this inode */
160 clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
161 &(ll_i2info(inode)->lli_flags));
163 if (lock->l_resource->lr_name.name[0] != inode->i_ino ||
164 lock->l_resource->lr_name.name[1] != inode->i_generation) {
165 LDLM_ERROR(lock, "data mismatch with ino %lu/%u",
166 inode->i_ino, inode->i_generation);
168 if (S_ISDIR(inode->i_mode)) {
169 CDEBUG(D_INODE, "invalidating inode %lu\n",
172 ll_invalidate_inode_pages(inode);
175 if (inode->i_sb->s_root &&
176 inode != inode->i_sb->s_root->d_inode)
177 ll_unhash_aliases(inode);
188 int ll_mdc_cancel_unused(struct lustre_handle *conn, struct inode *inode,
189 int flags, void *opaque)
191 struct ldlm_res_id res_id =
192 { .name = {inode->i_ino, inode->i_generation} };
193 struct obd_device *obddev = class_conn2obd(conn);
195 RETURN(ldlm_cli_cancel_unused(obddev->obd_namespace, &res_id, flags,
200 void ll_prepare_mdc_op_data(struct mdc_op_data *data, struct inode *i1,
201 struct inode *i2, const char *name, int namelen,
206 ll_i2uctxt(&data->ctxt, i1, i2);
207 ll_inode2fid(&data->fid1, i1);
210 ll_inode2fid(&data->fid2, i2);
213 data->namelen = namelen;
214 data->create_mode = mode;
215 data->mod_time = LTIME_S(CURRENT_TIME);
218 /* Search "inode"'s alias list for a dentry that has the same name and parent as
219 * de. If found, return it. If not found, return de. */
220 struct dentry *ll_find_alias(struct inode *inode, struct dentry *de)
222 struct list_head *tmp;
224 spin_lock(&dcache_lock);
225 list_for_each(tmp, &inode->i_dentry) {
226 struct dentry *dentry = list_entry(tmp, struct dentry, d_alias);
228 /* We are called here with 'de' already on the aliases list. */
234 if (dentry->d_parent != de->d_parent)
237 if (dentry->d_name.len != de->d_name.len)
240 if (memcmp(dentry->d_name.name, de->d_name.name,
241 de->d_name.len) != 0)
244 if (!list_empty(&dentry->d_lru))
245 list_del_init(&dentry->d_lru);
247 hlist_del_init(&dentry->d_hash);
248 __d_rehash(dentry, 0); /* avoid taking dcache_lock inside */
249 spin_unlock(&dcache_lock);
250 atomic_inc(&dentry->d_count);
252 dentry->d_flags &= ~DCACHE_LUSTRE_INVALID;
256 spin_unlock(&dcache_lock);
261 static int lookup_it_finish(struct ptlrpc_request *request, int offset,
262 struct lookup_intent *it, void *data)
264 struct it_cb_data *icbd = data;
265 struct dentry **de = icbd->icbd_childp;
266 struct inode *parent = icbd->icbd_parent;
267 struct ll_sb_info *sbi = ll_i2sbi(parent);
268 struct dentry *dentry = *de, *saved = *de;
269 struct inode *inode = NULL;
272 /* NB 1 request reference will be taken away by ll_intent_lock()
274 if (!it_disposition(it, DISP_LOOKUP_NEG)) {
277 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, offset,
282 CDEBUG(D_DLMTRACE, "setting l_data to inode %p (%lu/%u)\n",
283 inode, inode->i_ino, inode->i_generation);
284 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
286 /* If this is a stat, get the authoritative file size */
287 if (it->it_op == IT_GETATTR && S_ISREG(inode->i_mode) &&
288 ll_i2info(inode)->lli_smd != NULL) {
289 struct ldlm_extent extent = {0, OBD_OBJECT_EOF};
290 struct lustre_handle lockh = {0};
291 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
294 LASSERT(lsm->lsm_object_id != 0);
296 /* bug 2334: drop MDS lock before acquiring OST lock */
297 ll_intent_drop_lock(it);
299 rc = ll_extent_lock(NULL, inode, lsm, LCK_PR, &extent,
301 if (rc != ELDLM_OK) {
305 ll_extent_unlock(NULL, inode, lsm, LCK_PR, &lockh);
308 dentry = *de = ll_find_alias(inode, dentry);
313 dentry->d_op = &ll_d_ops;
317 d_add(dentry, inode);
323 static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
324 struct lookup_intent *it, int flags)
326 struct dentry *save = dentry, *retval;
328 struct ll_uctxt ctxt;
329 struct it_cb_data icbd;
330 struct ptlrpc_request *req = NULL;
331 struct lookup_intent lookup_it = { .it_op = IT_LOOKUP };
335 if (dentry->d_name.len > EXT3_NAME_LEN)
336 RETURN(ERR_PTR(-ENAMETOOLONG));
338 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p),intent=%s\n",
339 dentry->d_name.name, parent->i_ino, parent->i_generation,
340 parent, LL_IT2STR(it));
342 if (d_mountpoint(dentry))
343 CERROR("Tell Peter, lookup on mtpt, it %s\n", LL_IT2STR(it));
345 ll_frob_intent(&it, &lookup_it);
347 icbd.icbd_childp = &dentry;
348 icbd.icbd_parent = parent;
349 ll_inode2fid(&pfid, parent);
350 ll_i2uctxt(&ctxt, parent, NULL);
352 rc = mdc_intent_lock(ll_i2mdcexp(parent), &ctxt, &pfid,
353 dentry->d_name.name, dentry->d_name.len, NULL, 0,
354 NULL, it, flags, &req, ll_mdc_blocking_ast);
356 GOTO(out, retval = ERR_PTR(rc));
358 rc = lookup_it_finish(req, 1, it, &icbd);
360 ll_intent_release(it);
361 GOTO(out, retval = ERR_PTR(rc));
364 ll_lookup_finish_locks(it, dentry);
367 GOTO(out, retval = NULL);
369 GOTO(out, retval = dentry);
372 ptlrpc_req_finished(req);
376 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
377 static struct dentry *ll_lookup_nd(struct inode *parent, struct dentry *dentry,
378 struct nameidata *nd)
383 if (nd && nd->flags & LOOKUP_LAST && !(nd->flags & LOOKUP_LINK_NOTLAST))
384 de = ll_lookup_it(parent, dentry, &nd->intent, nd->flags);
386 de = ll_lookup_it(parent, dentry, NULL, 0);
392 /* We depend on "mode" being set with the proper file type/umask by now */
393 static struct inode *ll_create_node(struct inode *dir, const char *name,
394 int namelen, const void *data, int datalen,
395 int mode, __u64 extra,
396 struct lookup_intent *it)
398 struct inode *inode = NULL;
399 struct ptlrpc_request *request = NULL;
400 struct ll_sb_info *sbi = ll_i2sbi(dir);
404 LASSERT(it && it->d.lustre.it_disposition);
406 request = it->d.lustre.it_data;
407 rc = ll_prep_inode(sbi->ll_osc_exp, &inode, request, 1, dir->i_sb);
409 GOTO(out, inode = ERR_PTR(rc));
411 LASSERT(list_empty(&inode->i_dentry));
413 /* We asked for a lock on the directory, but were granted a
414 * lock on the inode. Since we finally have an inode pointer,
415 * stuff it in the lock. */
416 CDEBUG(D_DLMTRACE, "setting l_ast_data to inode %p (%lu/%u)\n",
417 inode, inode->i_ino, inode->i_generation);
418 mdc_set_lock_data(&it->d.lustre.it_lock_handle, inode);
421 ptlrpc_req_finished(request);
426 * By the time this is called, we already have created the directory cache
427 * entry for the new file, but it is so far negative - it has no inode.
429 * We defer creating the OBD object(s) until open, to keep the intent and
430 * non-intent code paths similar, and also because we do not have the MDS
431 * inode number before calling ll_create_node() (which is needed for LOV),
432 * so we would need to do yet another RPC to the MDS to store the LOV EA
433 * data on the MDS. If needed, we would pass the PACKED lmm as data and
434 * lmm_size in datalen (the MDS still has code which will handle that).
436 * If the create succeeds, we fill in the inode information
437 * with d_instantiate().
439 static int ll_create_it(struct inode *dir, struct dentry *dentry, int mode,
440 struct lookup_intent *it)
443 struct ptlrpc_request *request = it->d.lustre.it_data;
447 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p),intent=%s\n",
448 dentry->d_name.name, dir->i_ino, dir->i_generation, dir,
451 rc = it_open_error(DISP_OPEN_CREATE, it);
455 mdc_store_inode_generation(request, 2, 1);
456 inode = ll_create_node(dir, dentry->d_name.name, dentry->d_name.len,
457 NULL, 0, mode, 0, it);
459 RETURN(PTR_ERR(inode));
462 d_instantiate(dentry, inode);
466 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
467 static int ll_create_nd(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
469 return ll_create_it(dir, dentry, mode, &nd->intent);
473 static int ll_mknod_raw(struct nameidata *nd, int mode, dev_t rdev)
475 struct ptlrpc_request *request = NULL;
476 struct inode *dir = nd->dentry->d_inode;
477 const char *name = nd->last.name;
478 int len = nd->last.len;
479 struct ll_sb_info *sbi = ll_i2sbi(dir);
480 struct mdc_op_data op_data;
484 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p)\n",
485 name, dir->i_ino, dir->i_generation, dir);
487 if (dir->i_nlink >= EXT3_LINK_MAX)
490 mode &= ~current->fs->umask;
492 switch (mode & S_IFMT) {
495 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
500 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
501 err = mdc_create(sbi->ll_mdc_exp, &op_data, NULL, 0, mode,
502 current->fsuid, current->fsgid,
504 ptlrpc_req_finished(request);
515 static int ll_mknod(struct inode *dir, struct dentry *child, int mode,
518 struct ptlrpc_request *request = NULL;
519 struct inode *inode = NULL;
520 const char *name = child->d_name.name;
521 int len = child->d_name.len;
522 struct ll_sb_info *sbi = ll_i2sbi(dir);
523 struct mdc_op_data op_data;
527 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p)\n",
528 name, dir->i_ino, dir->i_generation, dir);
530 if (dir->i_nlink >= EXT3_LINK_MAX)
533 mode &= ~current->fs->umask;
535 switch (mode & S_IFMT) {
538 mode |= S_IFREG; /* for mode = 0 case, fallthrough */
543 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
544 err = mdc_create(sbi->ll_mdc_exp, &op_data, NULL, 0, mode,
545 current->fsuid, current->fsgid,
547 err = ll_prep_inode(sbi->ll_osc_exp, &inode, request, 0,
559 d_instantiate(child, inode);
561 ptlrpc_req_finished(request);
565 static int ll_symlink_raw(struct nameidata *nd, const char *tgt)
567 struct inode *dir = nd->dentry->d_inode;
568 const char *name = nd->last.name;
569 int len = nd->last.len;
570 struct ptlrpc_request *request = NULL;
571 struct ll_sb_info *sbi = ll_i2sbi(dir);
572 struct mdc_op_data op_data;
576 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p),target=%s\n",
577 name, dir->i_ino, dir->i_generation, dir, tgt);
579 if (dir->i_nlink >= EXT3_LINK_MAX)
582 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
583 err = mdc_create(sbi->ll_mdc_exp, &op_data,
584 tgt, strlen(tgt) + 1, S_IFLNK | S_IRWXUGO,
585 current->fsuid, current->fsgid, 0, &request);
586 ptlrpc_req_finished(request);
590 static int ll_link_raw(struct nameidata *srcnd, struct nameidata *tgtnd)
592 struct inode *src = srcnd->dentry->d_inode;
593 struct inode *dir = tgtnd->dentry->d_inode;
594 const char *name = tgtnd->last.name;
595 int len = tgtnd->last.len;
596 struct ptlrpc_request *request = NULL;
597 struct mdc_op_data op_data;
599 struct ll_sb_info *sbi = ll_i2sbi(dir);
602 CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p),dir=%lu/%u(%p),target=%s\n",
603 src->i_ino, src->i_generation, src,
604 dir->i_ino, dir->i_generation, dir, name);
606 ll_prepare_mdc_op_data(&op_data, src, dir, name, len, 0);
607 err = mdc_link(sbi->ll_mdc_exp, &op_data, &request);
608 ptlrpc_req_finished(request);
614 static int ll_mkdir_raw(struct nameidata *nd, int mode)
616 struct inode *dir = nd->dentry->d_inode;
617 const char *name = nd->last.name;
618 int len = nd->last.len;
619 struct ptlrpc_request *request = NULL;
620 struct ll_sb_info *sbi = ll_i2sbi(dir);
621 struct mdc_op_data op_data;
624 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p)\n",
625 name, dir->i_ino, dir->i_generation, dir);
627 if (dir->i_nlink >= EXT3_LINK_MAX)
630 mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
631 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
632 err = mdc_create(sbi->ll_mdc_exp, &op_data, NULL, 0, mode,
633 current->fsuid, current->fsgid, 0, &request);
634 ptlrpc_req_finished(request);
638 static int ll_rmdir_raw(struct nameidata *nd)
640 struct inode *dir = nd->dentry->d_inode;
641 const char *name = nd->last.name;
642 int len = nd->last.len;
643 struct ptlrpc_request *request = NULL;
644 struct mdc_op_data op_data;
647 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p)\n",
648 name, dir->i_ino, dir->i_generation, dir);
650 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, S_IFDIR);
651 rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
652 ptlrpc_req_finished(request);
656 int ll_objects_destroy(struct ptlrpc_request *request, struct inode *dir)
658 struct mds_body *body;
659 struct lov_mds_md *eadata;
660 struct lov_stripe_md *lsm = NULL;
661 struct obd_trans_info oti = { 0 };
666 /* req is swabbed so this is safe */
667 body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
669 if (!(body->valid & OBD_MD_FLEASIZE))
672 if (body->eadatasize == 0) {
673 CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
674 GOTO(out, rc = -EPROTO);
677 /* The MDS sent back the EA because we unlinked the last reference
678 * to this file. Use this EA to unlink the objects on the OST.
679 * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
680 * check it is complete and sensible. */
681 eadata = lustre_swab_repbuf(request, 1, body->eadatasize, NULL);
682 LASSERT(eadata != NULL);
683 if (eadata == NULL) {
684 CERROR("Can't unpack MDS EA data\n");
685 GOTO(out, rc = -EPROTO);
688 rc = obd_unpackmd(ll_i2obdexp(dir), &lsm, eadata, body->eadatasize);
690 CERROR("obd_unpackmd: %d\n", rc);
693 LASSERT(rc >= sizeof(*lsm));
697 GOTO(out_free_memmd, rc = -ENOMEM);
699 oa->o_id = lsm->lsm_object_id;
700 oa->o_mode = body->mode & S_IFMT;
701 oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
703 if (body->valid & OBD_MD_FLCOOKIE) {
704 oa->o_valid |= OBD_MD_FLCOOKIE;
706 lustre_msg_buf(request->rq_repmsg, 2,
707 sizeof(struct llog_cookie) *
708 lsm->lsm_stripe_count);
709 if (oti.oti_logcookies == NULL) {
710 oa->o_valid &= ~OBD_MD_FLCOOKIE;
711 body->valid &= ~OBD_MD_FLCOOKIE;
715 rc = obd_destroy(ll_i2obdexp(dir), oa, lsm, &oti);
718 CERROR("obd destroy objid "LPX64" error %d\n",
719 lsm->lsm_object_id, rc);
721 obd_free_memmd(ll_i2obdexp(dir), &lsm);
726 static int ll_unlink_raw(struct nameidata *nd)
728 struct inode *dir = nd->dentry->d_inode;
729 const char *name = nd->last.name;
730 int len = nd->last.len;
731 struct ptlrpc_request *request = NULL;
732 struct mdc_op_data op_data;
735 CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%u(%p)\n",
736 name, dir->i_ino, dir->i_generation, dir);
738 ll_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
739 rc = mdc_unlink(ll_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
743 rc = ll_objects_destroy(request, dir);
745 ptlrpc_req_finished(request);
749 static int ll_rename_raw(struct nameidata *oldnd, struct nameidata *newnd)
751 struct inode *src = oldnd->dentry->d_inode;
752 struct inode *tgt = newnd->dentry->d_inode;
753 const char *oldname = oldnd->last.name;
754 int oldlen = oldnd->last.len;
755 const char *newname = newnd->last.name;
756 int newlen = newnd->last.len;
757 struct ptlrpc_request *request = NULL;
758 struct ll_sb_info *sbi = ll_i2sbi(src);
759 struct mdc_op_data op_data;
762 CDEBUG(D_VFSTRACE, "VFS Op:oldname=%s,src_dir=%lu/%u(%p),newname=%s,"
763 "tgt_dir=%lu/%u(%p)\n", oldname, src->i_ino, src->i_generation,
764 src, newname, tgt->i_ino, tgt->i_generation, tgt);
766 ll_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0);
767 err = mdc_rename(sbi->ll_mdc_exp, &op_data,
768 oldname, oldlen, newname, newlen, &request);
770 err = ll_objects_destroy(request, src);
773 ptlrpc_req_finished(request);
778 struct inode_operations ll_dir_inode_operations = {
779 link_raw: ll_link_raw,
780 unlink_raw: ll_unlink_raw,
781 symlink_raw: ll_symlink_raw,
782 mkdir_raw: ll_mkdir_raw,
783 rmdir_raw: ll_rmdir_raw,
784 mknod_raw: ll_mknod_raw,
786 rename_raw: ll_rename_raw,
788 setattr_raw: ll_setattr_raw,
789 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
790 create_it: ll_create_it,
791 lookup_it: ll_lookup_it,
792 revalidate_it: ll_inode_revalidate_it,
794 lookup: ll_lookup_nd,
795 create: ll_create_nd,
796 getattr_it: ll_getattr,