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NEX-8972 Async-delete side-effect that may cause unmount EBUSY
Reviewed by: Alek Pinchuk <alek@nexenta.com>
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
NEX-3762 Appliance crashes with a NULL pointer dereference during a zpool export when a zfs_vn_rele_taskq thread attempts to check a bogus rwlock from rw_write_held
Reviewed by: Josef 'Jeff' Sipek <josef.sipek@nexenta.com>
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--- old/usr/src/uts/common/fs/zfs/sys/zfs_dir.h
+++ new/usr/src/uts/common/fs/zfs/sys/zfs_dir.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
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14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 + * Copyright 2016 Nexenta Systems Inc. All rights reserved.
24 25 */
25 26
26 27 #ifndef _SYS_FS_ZFS_DIR_H
27 28 #define _SYS_FS_ZFS_DIR_H
28 29
29 30 #include <sys/pathname.h>
30 31 #include <sys/dmu.h>
31 32 #include <sys/zfs_znode.h>
32 33
33 34 #ifdef __cplusplus
34 35 extern "C" {
35 36 #endif
36 37
37 38 /* zfs_dirent_lock() flags */
38 39 #define ZNEW 0x0001 /* entry should not exist */
39 40 #define ZEXISTS 0x0002 /* entry should exist */
40 41 #define ZSHARED 0x0004 /* shared access (zfs_dirlook()) */
41 42 #define ZXATTR 0x0008 /* we want the xattr dir */
42 43 #define ZRENAMING 0x0010 /* znode is being renamed */
43 44 #define ZCILOOK 0x0020 /* case-insensitive lookup requested */
44 45 #define ZCIEXACT 0x0040 /* c-i requires c-s match (rename) */
45 46 #define ZHAVELOCK 0x0080 /* z_name_lock is already held */
46 47
47 48 /* mknode flags */
48 49 #define IS_ROOT_NODE 0x01 /* create a root node */
49 50 #define IS_XATTR 0x02 /* create an extended attribute node */
50 51
51 52 extern int zfs_dirent_lock(zfs_dirlock_t **, znode_t *, char *, znode_t **,
52 53 int, int *, pathname_t *);
53 54 extern void zfs_dirent_unlock(zfs_dirlock_t *);
54 55 extern int zfs_link_create(zfs_dirlock_t *, znode_t *, dmu_tx_t *, int);
55 56 extern int zfs_link_destroy(zfs_dirlock_t *, znode_t *, dmu_tx_t *, int,
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56 57 boolean_t *);
57 58 extern int zfs_dirlook(znode_t *, char *, vnode_t **, int, int *,
58 59 pathname_t *);
59 60 extern void zfs_mknode(znode_t *, vattr_t *, dmu_tx_t *, cred_t *,
60 61 uint_t, znode_t **, zfs_acl_ids_t *);
61 62 extern void zfs_rmnode(znode_t *);
62 63 extern void zfs_dl_name_switch(zfs_dirlock_t *dl, char *new, char **old);
63 64 extern boolean_t zfs_dirempty(znode_t *);
64 65 extern void zfs_unlinked_add(znode_t *, dmu_tx_t *);
65 66 extern void zfs_unlinked_drain(zfsvfs_t *zfsvfs);
67 +extern void zfs_unlinked_drain_stop_wait(zfsvfs_t *zfsvfs);
66 68 extern int zfs_sticky_remove_access(znode_t *, znode_t *, cred_t *cr);
67 69 extern int zfs_get_xattrdir(znode_t *, vnode_t **, cred_t *, int);
68 70 extern int zfs_make_xattrdir(znode_t *, vattr_t *, vnode_t **, cred_t *);
69 71
70 72 #ifdef __cplusplus
71 73 }
72 74 #endif
73 75
74 76 #endif /* _SYS_FS_ZFS_DIR_H */
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