34 int ceph_init_dentry(struct dentry *dentry)  in ceph_init_dentry()  argument
38 	if (dentry->d_fsdata)  in ceph_init_dentry()
45 	spin_lock(&dentry->d_lock);  in ceph_init_dentry()
46 	if (dentry->d_fsdata) {  in ceph_init_dentry()
52 	if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_NOSNAP)  in ceph_init_dentry()
53 		d_set_d_op(dentry, &ceph_dentry_ops);  in ceph_init_dentry()
54 	else if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_SNAPDIR)  in ceph_init_dentry()
55 		d_set_d_op(dentry, &ceph_snapdir_dentry_ops);  in ceph_init_dentry()
57 		d_set_d_op(dentry, &ceph_snap_dentry_ops);  in ceph_init_dentry()
59 	di->dentry = dentry;  in ceph_init_dentry()
61 	dentry->d_time = jiffies;  in ceph_init_dentry()
64 	dentry->d_fsdata = di;  in ceph_init_dentry()
65 	ceph_dentry_lru_add(dentry);  in ceph_init_dentry()
67 	spin_unlock(&dentry->d_lock);  in ceph_init_dentry()
71 struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry)  in ceph_get_dentry_parent_inode()  argument
75 	if (!dentry)  in ceph_get_dentry_parent_inode()
78 	spin_lock(&dentry->d_lock);  in ceph_get_dentry_parent_inode()
79 	if (!IS_ROOT(dentry)) {  in ceph_get_dentry_parent_inode()
80 		inode = d_inode(dentry->d_parent);  in ceph_get_dentry_parent_inode()
83 	spin_unlock(&dentry->d_lock);  in ceph_get_dentry_parent_inode()
124 	struct dentry *parent = file->f_path.dentry;  in __dcache_readdir()
127 	struct dentry *dentry, *last;  in __dcache_readdir()  local
132 	last = fi->dentry;  in __dcache_readdir()
133 	fi->dentry = NULL;  in __dcache_readdir()
152 	dentry = list_entry(p, struct dentry, d_child);  in __dcache_readdir()
153 	di = ceph_dentry(dentry);  in __dcache_readdir()
156 		     d_unhashed(dentry) ? "!hashed" : "hashed",  in __dcache_readdir()
162 		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);  in __dcache_readdir()
164 		    !d_unhashed(dentry) && d_really_is_positive(dentry) &&  in __dcache_readdir()
165 		    ceph_snap(d_inode(dentry)) != CEPH_SNAPDIR &&  in __dcache_readdir()
166 		    ceph_ino(d_inode(dentry)) != CEPH_INO_CEPH &&  in __dcache_readdir()
169 		dout(" skipping %p %pd at %llu (%llu)%s%s\n", dentry,  in __dcache_readdir()
170 		     dentry, di->offset,  in __dcache_readdir()
171 		     ctx->pos, d_unhashed(dentry) ? " unhashed" : "",  in __dcache_readdir()
172 		     !d_inode(dentry) ? " null" : "");  in __dcache_readdir()
173 		spin_unlock(&dentry->d_lock);  in __dcache_readdir()
175 		dentry = list_entry(p, struct dentry, d_child);  in __dcache_readdir()
176 		di = ceph_dentry(dentry);  in __dcache_readdir()
179 	dget_dlock(dentry);  in __dcache_readdir()
180 	spin_unlock(&dentry->d_lock);  in __dcache_readdir()
186 		dput(dentry);  in __dcache_readdir()
192 	     dentry, dentry, d_inode(dentry));  in __dcache_readdir()
193 	if (!dir_emit(ctx, dentry->d_name.name,  in __dcache_readdir()
194 		      dentry->d_name.len,  in __dcache_readdir()
195 		      ceph_translate_ino(dentry->d_sb, d_inode(dentry)->i_ino),  in __dcache_readdir()
196 		      d_inode(dentry)->i_mode >> 12)) {  in __dcache_readdir()
199 			fi->dentry = last;  in __dcache_readdir()
202 		dput(dentry);  in __dcache_readdir()
210 	last = dentry;  in __dcache_readdir()
271 		ino_t ino = parent_ino(file->f_path.dentry);  in ceph_readdir()
283 	if ((ctx->pos == 2 || fi->dentry) &&  in ceph_readdir()
299 	if (fi->dentry) {  in ceph_readdir()
300 		err = note_last_dentry(fi, fi->dentry->d_name.name,  in ceph_readdir()
301 				       fi->dentry->d_name.len);  in ceph_readdir()
304 		dput(fi->dentry);  in ceph_readdir()
305 		fi->dentry = NULL;  in ceph_readdir()
356 		req->r_dentry = dget(file->f_path.dentry);  in ceph_readdir()
483 	if (fi->dentry) {  in reset_readdir()
484 		dput(fi->dentry);  in reset_readdir()
485 		fi->dentry = NULL;  in reset_readdir()
543 			struct dentry *dentry, int err)  in ceph_handle_snapdir()  argument
545 	struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);  in ceph_handle_snapdir()
546 	struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */  in ceph_handle_snapdir()
551 	    strcmp(dentry->d_name.name,  in ceph_handle_snapdir()
555 		     dentry, dentry, inode);  in ceph_handle_snapdir()
556 		BUG_ON(!d_unhashed(dentry));  in ceph_handle_snapdir()
557 		d_add(dentry, inode);  in ceph_handle_snapdir()
574 struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,  in ceph_finish_lookup()
575 				  struct dentry *dentry, int err)  in ceph_finish_lookup()  argument
582 			     dentry, d_inode(dentry));  in ceph_finish_lookup()
583 			if (d_really_is_positive(dentry)) {  in ceph_finish_lookup()
584 				d_drop(dentry);  in ceph_finish_lookup()
587 				d_add(dentry, NULL);  in ceph_finish_lookup()
592 		dentry = ERR_PTR(err);  in ceph_finish_lookup()
593 	else if (dentry != req->r_dentry)  in ceph_finish_lookup()
594 		dentry = dget(req->r_dentry);   /* we got spliced */  in ceph_finish_lookup()
596 		dentry = NULL;  in ceph_finish_lookup()
597 	return dentry;  in ceph_finish_lookup()
600 static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)  in is_root_ceph_dentry()  argument
603 		strncmp(dentry->d_name.name, ".ceph", 5) == 0;  in is_root_ceph_dentry()
610 static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,  in ceph_lookup()  argument
620 	     dir, dentry, dentry);  in ceph_lookup()
622 	if (dentry->d_name.len > NAME_MAX)  in ceph_lookup()
625 	err = ceph_init_dentry(dentry);  in ceph_lookup()
630 	if (d_really_is_negative(dentry)) {  in ceph_lookup()
632 		struct ceph_dentry_info *di = ceph_dentry(dentry);  in ceph_lookup()
636 		if (strncmp(dentry->d_name.name,  in ceph_lookup()
638 			    dentry->d_name.len) &&  in ceph_lookup()
639 		    !is_root_ceph_dentry(dir, dentry) &&  in ceph_lookup()
645 			d_add(dentry, NULL);  in ceph_lookup()
657 	req->r_dentry = dget(dentry);  in ceph_lookup()
663 	err = ceph_handle_snapdir(req, dentry, err);  in ceph_lookup()
664 	dentry = ceph_finish_lookup(req, dentry, err);  in ceph_lookup()
666 	dout("lookup result=%p\n", dentry);  in ceph_lookup()
667 	return dentry;  in ceph_lookup()
674 int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)  in ceph_handle_notrace_create()  argument
676 	struct dentry *result = ceph_lookup(dir, dentry, 0);  in ceph_handle_notrace_create()
697 static int ceph_mknod(struct inode *dir, struct dentry *dentry,  in ceph_mknod()  argument
714 	     dir, dentry, mode, rdev);  in ceph_mknod()
720 	req->r_dentry = dget(dentry);  in ceph_mknod()
733 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_mknod()
737 		ceph_init_inode_acls(d_inode(dentry), &acls);  in ceph_mknod()
739 		d_drop(dentry);  in ceph_mknod()
744 static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in ceph_create()  argument
747 	return ceph_mknod(dir, dentry, mode, 0);  in ceph_create()
750 static int ceph_symlink(struct inode *dir, struct dentry *dentry,  in ceph_symlink()  argument
761 	dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);  in ceph_symlink()
774 	req->r_dentry = dget(dentry);  in ceph_symlink()
780 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_symlink()
784 		d_drop(dentry);  in ceph_symlink()
788 static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in ceph_mkdir()  argument
801 		     dentry, dentry);  in ceph_mkdir()
803 		dout("mkdir dir %p dn %p mode 0%ho\n", dir, dentry, mode);  in ceph_mkdir()
820 	req->r_dentry = dget(dentry);  in ceph_mkdir()
834 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_mkdir()
838 		ceph_init_inode_acls(d_inode(dentry), &acls);  in ceph_mkdir()
840 		d_drop(dentry);  in ceph_mkdir()
845 static int ceph_link(struct dentry *old_dentry, struct inode *dir,  in ceph_link()
846 		     struct dentry *dentry)  in ceph_link()  argument
857 	     old_dentry, dentry);  in ceph_link()
860 		d_drop(dentry);  in ceph_link()
863 	req->r_dentry = dget(dentry);  in ceph_link()
873 		d_drop(dentry);  in ceph_link()
876 		d_instantiate(dentry, d_inode(old_dentry));  in ceph_link()
905 static int ceph_unlink(struct inode *dir, struct dentry *dentry)  in ceph_unlink()  argument
909 	struct inode *inode = d_inode(dentry);  in ceph_unlink()
916 		dout("rmsnap dir %p '%pd' dn %p\n", dir, dentry, dentry);  in ceph_unlink()
920 		     dir, dentry, inode);  in ceph_unlink()
921 		op = d_is_dir(dentry) ?  in ceph_unlink()
930 	req->r_dentry = dget(dentry);  in ceph_unlink()
938 		d_delete(dentry);  in ceph_unlink()
944 static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,  in ceph_rename()
945 		       struct inode *new_dir, struct dentry *new_dentry)  in ceph_rename()
1006 void ceph_invalidate_dentry_lease(struct dentry *dentry)  in ceph_invalidate_dentry_lease()  argument
1008 	spin_lock(&dentry->d_lock);  in ceph_invalidate_dentry_lease()
1009 	dentry->d_time = jiffies;  in ceph_invalidate_dentry_lease()
1010 	ceph_dentry(dentry)->lease_shared_gen = 0;  in ceph_invalidate_dentry_lease()
1011 	spin_unlock(&dentry->d_lock);  in ceph_invalidate_dentry_lease()
1018 static int dentry_lease_is_valid(struct dentry *dentry)  in dentry_lease_is_valid()  argument
1029 	spin_lock(&dentry->d_lock);  in dentry_lease_is_valid()
1030 	di = ceph_dentry(dentry);  in dentry_lease_is_valid()
1039 		    time_before(jiffies, dentry->d_time) &&  in dentry_lease_is_valid()
1045 				dir = d_inode(dentry->d_parent);  in dentry_lease_is_valid()
1053 	spin_unlock(&dentry->d_lock);  in dentry_lease_is_valid()
1056 		ceph_mdsc_lease_send_msg(session, dir, dentry,  in dentry_lease_is_valid()
1060 	dout("dentry_lease_is_valid - dentry %p = %d\n", dentry, valid);  in dentry_lease_is_valid()
1067 static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)  in dir_lease_is_valid()  argument
1070 	struct ceph_dentry_info *di = ceph_dentry(dentry);  in dir_lease_is_valid()
1078 	     dir, (unsigned)ci->i_shared_gen, dentry,  in dir_lease_is_valid()
1086 static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)  in ceph_d_revalidate()  argument
1094 	dout("d_revalidate %p '%pd' inode %p offset %lld\n", dentry,  in ceph_d_revalidate()
1095 	     dentry, d_inode(dentry), ceph_dentry(dentry)->offset);  in ceph_d_revalidate()
1097 	dir = ceph_get_dentry_parent_inode(dentry);  in ceph_d_revalidate()
1101 		dout("d_revalidate %p '%pd' inode %p is SNAPPED\n", dentry,  in ceph_d_revalidate()
1102 		     dentry, d_inode(dentry));  in ceph_d_revalidate()
1104 	} else if (d_really_is_positive(dentry) &&  in ceph_d_revalidate()
1105 		   ceph_snap(d_inode(dentry)) == CEPH_SNAPDIR) {  in ceph_d_revalidate()
1107 	} else if (dentry_lease_is_valid(dentry) ||  in ceph_d_revalidate()
1108 		   dir_lease_is_valid(dir, dentry)) {  in ceph_d_revalidate()
1109 		if (d_really_is_positive(dentry))  in ceph_d_revalidate()
1110 			valid = ceph_is_any_caps(d_inode(dentry));  in ceph_d_revalidate()
1115 	dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid");  in ceph_d_revalidate()
1117 		ceph_dentry_lru_touch(dentry);  in ceph_d_revalidate()
1128 static void ceph_d_release(struct dentry *dentry)  in ceph_d_release()  argument
1130 	struct ceph_dentry_info *di = ceph_dentry(dentry);  in ceph_d_release()
1132 	dout("d_release %p\n", dentry);  in ceph_d_release()
1133 	ceph_dentry_lru_del(dentry);  in ceph_d_release()
1137 	dentry->d_fsdata = NULL;  in ceph_d_release()
1140 static int ceph_snapdir_d_revalidate(struct dentry *dentry,  in ceph_snapdir_d_revalidate()  argument
1156 static void ceph_d_prune(struct dentry *dentry)  in ceph_d_prune()  argument
1158 	dout("ceph_d_prune %p\n", dentry);  in ceph_d_prune()
1161 	if (IS_ROOT(dentry))  in ceph_d_prune()
1165 	if (d_unhashed(dentry))  in ceph_d_prune()
1172 	ceph_dir_clear_complete(d_inode(dentry->d_parent));  in ceph_d_prune()
1291 void ceph_dentry_lru_add(struct dentry *dn)  in ceph_dentry_lru_add()
1304 void ceph_dentry_lru_touch(struct dentry *dn)  in ceph_dentry_lru_touch()
1317 void ceph_dentry_lru_del(struct dentry *dn)  in ceph_dentry_lru_del()
1334 unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)  in ceph_dentry_hash()