4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2014, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef _LUSTRE_COMPAT_H
34 #define _LUSTRE_COMPAT_H
36 #include <linux/fs_struct.h>
37 #include <linux/namei.h>
38 #include <linux/pagemap.h>
39 #include <linux/bio.h>
41 #include <libcfs/libcfs.h>
42 #include <lustre_patchless_compat.h>
44 #ifdef HAVE_FS_STRUCT_RWLOCK
45 # define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
46 # define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
48 # define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
49 # define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
52 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
53 struct dentry *dentry)
71 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
72 * ATTR_* attributes (see bug 13828)
74 #define ATTR_BLOCKS (1 << 27)
76 #define current_ngroups current_cred()->group_info->ngroups
77 #define current_groups current_cred()->group_info->small_block
80 * OBD need working random driver, thus all our
81 * initialization routines must be called after device
82 * driver initialization
86 #define module_init(a) late_initcall(a)
89 #ifndef MODULE_ALIAS_FS
90 #define MODULE_ALIAS_FS(name)
93 #define LTIME_S(time) (time.tv_sec)
95 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
96 # define ll_generic_permission(inode, mask, flags, check_acl) \
97 generic_permission(inode, mask)
98 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
99 # define ll_generic_permission(inode, mask, flags, check_acl) \
100 generic_permission(inode, mask, flags, check_acl)
102 # define ll_generic_permission(inode, mask, flags, check_acl) \
103 generic_permission(inode, mask, check_acl)
106 #ifdef HAVE_4ARGS_VFS_SYMLINK
107 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
108 vfs_symlink(dir, dentry, path, mode)
110 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
111 vfs_symlink(dir, dentry, path)
114 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
115 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
116 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
118 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
119 generic_file_llseek_size(file, offset, origin, maxbytes);
122 #ifdef HAVE_INODE_DIO_WAIT
123 /* inode_dio_wait(i) use as-is for write lock */
124 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
126 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
127 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
130 #ifndef FS_HAS_FIEMAP
131 #define FS_HAS_FIEMAP (0)
134 #ifndef HAVE_SIMPLE_SETATTR
135 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
138 #ifndef SLAB_DESTROY_BY_RCU
139 #define SLAB_DESTROY_BY_RCU 0
142 #ifndef HAVE_DQUOT_SUSPEND
143 # define ll_vfs_dq_init vfs_dq_init
144 # define ll_vfs_dq_drop vfs_dq_drop
145 # define ll_vfs_dq_transfer vfs_dq_transfer
146 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
148 # define ll_vfs_dq_init dquot_initialize
149 # define ll_vfs_dq_drop dquot_drop
150 # define ll_vfs_dq_transfer dquot_transfer
151 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
154 #ifndef HAVE_BLKDEV_GET_BY_DEV
155 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
158 #ifdef HAVE_BVEC_ITER
159 #define bio_idx(bio) (bio->bi_iter.bi_idx)
160 #define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
161 #define bvl_to_page(bvl) (bvl.bv_page)
163 #define bio_idx(bio) (bio->bi_idx)
164 #define bio_set_sector(bio, sector) (bio->bi_sector = sector)
165 #define bio_sectors(bio) ((bio)->bi_size >> 9)
166 #ifndef HAVE_BIO_END_SECTOR
167 #define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
169 #define bvl_to_page(bvl) (bvl->bv_page)
172 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
173 #define blk_queue_max_segments(rq, seg) \
174 do { blk_queue_max_phys_segments(rq, seg); \
175 blk_queue_max_hw_segments(rq, seg); } while (0)
177 #define queue_max_phys_segments(rq) queue_max_segments(rq)
178 #define queue_max_hw_segments(rq) queue_max_segments(rq)
181 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
182 #define ll_kmap_atomic(a, b) kmap_atomic(a)
183 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
185 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
186 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
189 #ifndef HAVE_CLEAR_INODE
190 #define clear_inode(i) end_writeback(i)
193 #ifndef HAVE_DENTRY_D_CHILD
194 #define d_child d_u.d_child
197 #ifdef HAVE_DENTRY_D_U_D_ALIAS
198 #define d_alias d_u.d_alias
201 #ifndef DATA_FOR_LLITE_IS_LIST
202 #define ll_d_hlist_node hlist_node
203 #define ll_d_hlist_empty(list) hlist_empty(list)
204 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
205 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
206 # ifdef HAVE_HLIST_FOR_EACH_3ARG
207 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
208 p = NULL; hlist_for_each_entry(dentry, i_dentry, d_alias)
210 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
211 hlist_for_each_entry(dentry, p, i_dentry, d_alias)
213 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
215 #define ll_d_hlist_node list_head
216 #define ll_d_hlist_empty(list) list_empty(list)
217 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
218 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
219 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
220 list_for_each_entry(dentry, i_dentry, d_alias)
221 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
222 #endif /* !DATA_FOR_LLITE_IS_LIST */
228 # define NO_QUOTA (-EDQUOT)
232 #define SEEK_DATA 3 /* seek to the next data */
235 #define SEEK_HOLE 4 /* seek to the next hole */
238 #ifndef FMODE_UNSIGNED_OFFSET
239 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
242 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
243 # define ext2_set_bit __test_and_set_bit_le
244 # define ext2_clear_bit __test_and_clear_bit_le
245 # define ext2_test_bit test_bit_le
246 # define ext2_find_first_zero_bit find_first_zero_bit_le
247 # define ext2_find_next_zero_bit find_next_zero_bit_le
250 #ifdef ATTR_TIMES_SET
251 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
253 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
256 #ifndef XATTR_NAME_POSIX_ACL_ACCESS
257 # define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
260 #ifndef XATTR_NAME_POSIX_ACL_DEFAULT
261 # define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
264 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
265 # define lm_compare_owner fl_compare_owner
269 * After 3.1, kernel's nameidata.intent.open.flags is different
270 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
271 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
272 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
274 #include <linux/version.h>
275 static inline int ll_namei_to_lookup_intent_flag(int flag)
277 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
278 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
283 #ifdef HAVE_QC_MAKE_REQUEST_FN
284 # define ll_mrf_ret blk_qc_t
285 # define LL_MRF_RETURN(rc) RETURN(BLK_QC_T_NONE)
287 # ifdef HAVE_VOID_MAKE_REQUEST_FN
288 # define ll_mrf_ret void
289 # define LL_MRF_RETURN(rc)
291 # define ll_mrf_ret int
292 # define LL_MRF_RETURN(rc) RETURN(rc)
296 #include <linux/fs.h>
297 #ifndef HAVE_PROTECT_I_NLINK
298 static inline void set_nlink(struct inode *inode, unsigned int nlink)
300 inode->i_nlink = nlink;
304 #ifdef HAVE_INODEOPS_USE_UMODE_T
305 # define ll_umode_t umode_t
307 # define ll_umode_t int
310 #include <linux/dcache.h>
311 #ifndef HAVE_D_MAKE_ROOT
312 static inline struct dentry *d_make_root(struct inode *root)
314 struct dentry *res = d_alloc_root(root);
316 if (res == NULL && root)
323 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
324 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
326 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
329 #ifdef HAVE_FILE_F_INODE
330 # define set_file_inode(file, inode) (file)->f_inode = inode
332 # define set_file_inode(file, inode)
335 #ifndef HAVE_FILE_INODE
336 static inline struct inode *file_inode(const struct file *file)
338 return file->f_path.dentry->d_inode;
342 #ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
343 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
345 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
348 #ifdef HAVE_VFS_RENAME_5ARGS
349 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
350 #elif defined HAVE_VFS_RENAME_6ARGS
351 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
353 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
356 #ifdef HAVE_VFS_UNLINK_3ARGS
357 #define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
359 #define ll_vfs_unlink(a, b) vfs_unlink(a, b)
362 #ifndef HAVE_INODE_LOCK
363 # define inode_lock(inode) mutex_lock(&(inode)->i_mutex)
364 # define inode_unlock(inode) mutex_unlock(&(inode)->i_mutex)
365 # define inode_trylock(inode) mutex_trylock(&(inode)->i_mutex)
368 #ifndef HAVE_RADIX_EXCEPTION_ENTRY
369 static inline int radix_tree_exceptional_entry(void *arg)
375 #ifndef HAVE_TRUNCATE_INODE_PAGES_FINAL
376 static inline void truncate_inode_pages_final(struct address_space *map)
378 truncate_inode_pages(map, 0);
379 /* Workaround for LU-118 */
381 spin_lock_irq(&map->tree_lock);
382 spin_unlock_irq(&map->tree_lock);
383 } /* Workaround end */
388 #define SIZE_MAX (~(size_t)0)
391 #ifdef HAVE_SECURITY_IINITSEC_CALLBACK
392 # define ll_security_inode_init_security(inode, dir, name, value, len, \
393 initxattrs, dentry) \
394 security_inode_init_security(inode, dir, &((dentry)->d_name), \
396 #elif defined HAVE_SECURITY_IINITSEC_QSTR
397 # define ll_security_inode_init_security(inode, dir, name, value, len, \
398 initxattrs, dentry) \
399 security_inode_init_security(inode, dir, &((dentry)->d_name), \
401 #else /* !HAVE_SECURITY_IINITSEC_CALLBACK && !HAVE_SECURITY_IINITSEC_QSTR */
402 # define ll_security_inode_init_security(inode, dir, name, value, len, \
403 initxattrs, dentry) \
404 security_inode_init_security(inode, dir, name, value, len)
407 #ifndef bio_for_each_segment_all /* since kernel version 3.9 */
408 #ifdef HAVE_BVEC_ITER
409 #define bio_for_each_segment_all(bv, bio, it) \
410 for (it = 0, bv = (bio)->bi_io_vec; it < (bio)->bi_vcnt; it++, bv++)
412 #define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
416 #endif /* _LUSTRE_COMPAT_H */