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()
145 	struct dentry *parent = file->f_path.dentry;  in __dcache_readdir()
147 	struct dentry *dentry, *last = NULL;  in __dcache_readdir()  local
149 	unsigned nsize = PAGE_CACHE_SIZE / sizeof(struct dentry *);  in __dcache_readdir()
160 		ptr_pos = cache_ctl.index * sizeof(struct dentry *);  in __dcache_readdir()
194 			dentry = cache_ctl.dentries[cache_ctl.index % nsize];  in __dcache_readdir()
196 			dentry = NULL;  in __dcache_readdir()
198 		if (dentry && !lockref_get_not_dead(&dentry->d_lockref))  in __dcache_readdir()
199 			dentry = NULL;  in __dcache_readdir()
201 		if (!dentry)  in __dcache_readdir()
205 		di = ceph_dentry(dentry);  in __dcache_readdir()
206 		spin_lock(&dentry->d_lock);  in __dcache_readdir()
208 		    d_really_is_positive(dentry) &&  in __dcache_readdir()
209 		    ceph_snap(d_inode(dentry)) != CEPH_SNAPDIR &&  in __dcache_readdir()
210 		    ceph_ino(d_inode(dentry)) != CEPH_INO_CEPH &&  in __dcache_readdir()
214 		spin_unlock(&dentry->d_lock);  in __dcache_readdir()
218 			     dentry, dentry, d_inode(dentry));  in __dcache_readdir()
220 			if (!dir_emit(ctx, dentry->d_name.name,  in __dcache_readdir()
221 				      dentry->d_name.len,  in __dcache_readdir()
222 				      ceph_translate_ino(dentry->d_sb,  in __dcache_readdir()
223 							 d_inode(dentry)->i_ino),  in __dcache_readdir()
224 				      d_inode(dentry)->i_mode >> 12)) {  in __dcache_readdir()
225 				dput(dentry);  in __dcache_readdir()
233 			last = dentry;  in __dcache_readdir()
235 			dput(dentry);  in __dcache_readdir()
239 		ptr_pos += sizeof(struct dentry *);  in __dcache_readdir()
282 		ino_t ino = parent_ino(file->f_path.dentry);  in ceph_readdir()
353 		req->r_dentry = dget(file->f_path.dentry);  in ceph_readdir()
473 				     sizeof(struct dentry*));  in ceph_readdir()
553 			struct dentry *dentry, int err)  in ceph_handle_snapdir()  argument
555 	struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);  in ceph_handle_snapdir()
556 	struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */  in ceph_handle_snapdir()
561 	    strcmp(dentry->d_name.name,  in ceph_handle_snapdir()
565 		     dentry, dentry, inode);  in ceph_handle_snapdir()
566 		BUG_ON(!d_unhashed(dentry));  in ceph_handle_snapdir()
567 		d_add(dentry, inode);  in ceph_handle_snapdir()
584 struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,  in ceph_finish_lookup()
585 				  struct dentry *dentry, int err)  in ceph_finish_lookup()  argument
592 			     dentry, d_inode(dentry));  in ceph_finish_lookup()
593 			if (d_really_is_positive(dentry)) {  in ceph_finish_lookup()
594 				d_drop(dentry);  in ceph_finish_lookup()
597 				d_add(dentry, NULL);  in ceph_finish_lookup()
602 		dentry = ERR_PTR(err);  in ceph_finish_lookup()
603 	else if (dentry != req->r_dentry)  in ceph_finish_lookup()
604 		dentry = dget(req->r_dentry);   /* we got spliced */  in ceph_finish_lookup()
606 		dentry = NULL;  in ceph_finish_lookup()
607 	return dentry;  in ceph_finish_lookup()
610 static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)  in is_root_ceph_dentry()  argument
613 		strncmp(dentry->d_name.name, ".ceph", 5) == 0;  in is_root_ceph_dentry()
620 static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,  in ceph_lookup()  argument
630 	     dir, dentry, dentry);  in ceph_lookup()
632 	if (dentry->d_name.len > NAME_MAX)  in ceph_lookup()
635 	err = ceph_init_dentry(dentry);  in ceph_lookup()
640 	if (d_really_is_negative(dentry)) {  in ceph_lookup()
642 		struct ceph_dentry_info *di = ceph_dentry(dentry);  in ceph_lookup()
646 		if (strncmp(dentry->d_name.name,  in ceph_lookup()
648 			    dentry->d_name.len) &&  in ceph_lookup()
649 		    !is_root_ceph_dentry(dir, dentry) &&  in ceph_lookup()
655 			d_add(dentry, NULL);  in ceph_lookup()
667 	req->r_dentry = dget(dentry);  in ceph_lookup()
673 	err = ceph_handle_snapdir(req, dentry, err);  in ceph_lookup()
674 	dentry = ceph_finish_lookup(req, dentry, err);  in ceph_lookup()
676 	dout("lookup result=%p\n", dentry);  in ceph_lookup()
677 	return dentry;  in ceph_lookup()
684 int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)  in ceph_handle_notrace_create()  argument
686 	struct dentry *result = ceph_lookup(dir, dentry, 0);  in ceph_handle_notrace_create()
707 static int ceph_mknod(struct inode *dir, struct dentry *dentry,  in ceph_mknod()  argument
724 	     dir, dentry, mode, rdev);  in ceph_mknod()
730 	req->r_dentry = dget(dentry);  in ceph_mknod()
743 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_mknod()
747 		ceph_init_inode_acls(d_inode(dentry), &acls);  in ceph_mknod()
749 		d_drop(dentry);  in ceph_mknod()
754 static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in ceph_create()  argument
757 	return ceph_mknod(dir, dentry, mode, 0);  in ceph_create()
760 static int ceph_symlink(struct inode *dir, struct dentry *dentry,  in ceph_symlink()  argument
771 	dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);  in ceph_symlink()
784 	req->r_dentry = dget(dentry);  in ceph_symlink()
790 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_symlink()
794 		d_drop(dentry);  in ceph_symlink()
798 static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in ceph_mkdir()  argument
811 		     dentry, dentry);  in ceph_mkdir()
813 		dout("mkdir dir %p dn %p mode 0%ho\n", dir, dentry, mode);  in ceph_mkdir()
830 	req->r_dentry = dget(dentry);  in ceph_mkdir()
844 		err = ceph_handle_notrace_create(dir, dentry);  in ceph_mkdir()
848 		ceph_init_inode_acls(d_inode(dentry), &acls);  in ceph_mkdir()
850 		d_drop(dentry);  in ceph_mkdir()
855 static int ceph_link(struct dentry *old_dentry, struct inode *dir,  in ceph_link()
856 		     struct dentry *dentry)  in ceph_link()  argument
867 	     old_dentry, dentry);  in ceph_link()
870 		d_drop(dentry);  in ceph_link()
873 	req->r_dentry = dget(dentry);  in ceph_link()
883 		d_drop(dentry);  in ceph_link()
886 		d_instantiate(dentry, d_inode(old_dentry));  in ceph_link()
915 static int ceph_unlink(struct inode *dir, struct dentry *dentry)  in ceph_unlink()  argument
919 	struct inode *inode = d_inode(dentry);  in ceph_unlink()
926 		dout("rmsnap dir %p '%pd' dn %p\n", dir, dentry, dentry);  in ceph_unlink()
930 		     dir, dentry, inode);  in ceph_unlink()
931 		op = d_is_dir(dentry) ?  in ceph_unlink()
940 	req->r_dentry = dget(dentry);  in ceph_unlink()
948 		d_delete(dentry);  in ceph_unlink()
954 static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,  in ceph_rename()
955 		       struct inode *new_dir, struct dentry *new_dentry)  in ceph_rename()
1015 void ceph_invalidate_dentry_lease(struct dentry *dentry)  in ceph_invalidate_dentry_lease()  argument
1017 	spin_lock(&dentry->d_lock);  in ceph_invalidate_dentry_lease()
1018 	dentry->d_time = jiffies;  in ceph_invalidate_dentry_lease()
1019 	ceph_dentry(dentry)->lease_shared_gen = 0;  in ceph_invalidate_dentry_lease()
1020 	spin_unlock(&dentry->d_lock);  in ceph_invalidate_dentry_lease()
1027 static int dentry_lease_is_valid(struct dentry *dentry)  in dentry_lease_is_valid()  argument
1038 	spin_lock(&dentry->d_lock);  in dentry_lease_is_valid()
1039 	di = ceph_dentry(dentry);  in dentry_lease_is_valid()
1048 		    time_before(jiffies, dentry->d_time) &&  in dentry_lease_is_valid()
1054 				dir = d_inode(dentry->d_parent);  in dentry_lease_is_valid()
1062 	spin_unlock(&dentry->d_lock);  in dentry_lease_is_valid()
1065 		ceph_mdsc_lease_send_msg(session, dir, dentry,  in dentry_lease_is_valid()
1069 	dout("dentry_lease_is_valid - dentry %p = %d\n", dentry, valid);  in dentry_lease_is_valid()
1076 static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)  in dir_lease_is_valid()  argument
1079 	struct ceph_dentry_info *di = ceph_dentry(dentry);  in dir_lease_is_valid()
1087 	     dir, (unsigned)ci->i_shared_gen, dentry,  in dir_lease_is_valid()
1095 static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)  in ceph_d_revalidate()  argument
1103 	dout("d_revalidate %p '%pd' inode %p offset %lld\n", dentry,  in ceph_d_revalidate()
1104 	     dentry, d_inode(dentry), ceph_dentry(dentry)->offset);  in ceph_d_revalidate()
1106 	dir = ceph_get_dentry_parent_inode(dentry);  in ceph_d_revalidate()
1110 		dout("d_revalidate %p '%pd' inode %p is SNAPPED\n", dentry,  in ceph_d_revalidate()
1111 		     dentry, d_inode(dentry));  in ceph_d_revalidate()
1113 	} else if (d_really_is_positive(dentry) &&  in ceph_d_revalidate()
1114 		   ceph_snap(d_inode(dentry)) == CEPH_SNAPDIR) {  in ceph_d_revalidate()
1116 	} else if (dentry_lease_is_valid(dentry) ||  in ceph_d_revalidate()
1117 		   dir_lease_is_valid(dir, dentry)) {  in ceph_d_revalidate()
1118 		if (d_really_is_positive(dentry))  in ceph_d_revalidate()
1119 			valid = ceph_is_any_caps(d_inode(dentry));  in ceph_d_revalidate()
1124 	dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid");  in ceph_d_revalidate()
1126 		ceph_dentry_lru_touch(dentry);  in ceph_d_revalidate()
1137 static void ceph_d_release(struct dentry *dentry)  in ceph_d_release()  argument
1139 	struct ceph_dentry_info *di = ceph_dentry(dentry);  in ceph_d_release()
1141 	dout("d_release %p\n", dentry);  in ceph_d_release()
1142 	ceph_dentry_lru_del(dentry);  in ceph_d_release()
1146 	dentry->d_fsdata = NULL;  in ceph_d_release()
1149 static int ceph_snapdir_d_revalidate(struct dentry *dentry,  in ceph_snapdir_d_revalidate()  argument
1165 static void ceph_d_prune(struct dentry *dentry)  in ceph_d_prune()  argument
1167 	dout("ceph_d_prune %p\n", dentry);  in ceph_d_prune()
1170 	if (IS_ROOT(dentry))  in ceph_d_prune()
1174 	if (d_unhashed(dentry))  in ceph_d_prune()
1181 	ceph_dir_clear_complete(d_inode(dentry->d_parent));  in ceph_d_prune()
1240 void ceph_dentry_lru_add(struct dentry *dn)  in ceph_dentry_lru_add()
1253 void ceph_dentry_lru_touch(struct dentry *dn)  in ceph_dentry_lru_touch()
1266 void ceph_dentry_lru_del(struct dentry *dn)  in ceph_dentry_lru_del()
1283 unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn)  in ceph_dentry_hash()