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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _LINUX_COMPAT25_H
38 #define _LINUX_COMPAT25_H
40 #include <linux/fs_struct.h>
41 #include <linux/namei.h>
42 #include <libcfs/linux/portals_compat25.h>
44 #include <linux/lustre_patchless_compat.h>
46 #ifdef HAVE_FS_STRUCT_RWLOCK
47 # define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
48 # define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
50 # define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
51 # define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
54 #ifdef HAVE_FS_STRUCT_USE_PATH
55 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
56 struct dentry *dentry)
75 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
76 struct dentry *dentry)
78 struct dentry *old_pwd;
79 struct vfsmount *old_pwdmnt;
83 old_pwdmnt = fs->pwdmnt;
84 fs->pwdmnt = mntget(mnt);
85 fs->pwd = dget(dentry);
96 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
97 * ATTR_* attributes (see bug 13828)
99 #define ATTR_BLOCKS (1 << 27)
101 #define current_ngroups current_cred()->group_info->ngroups
102 #define current_groups current_cred()->group_info->small_block
105 * OBD need working random driver, thus all our
106 * initialization routines must be called after device
107 * driver initialization
111 #define module_init(a) late_initcall(a)
114 #ifndef HAVE_TRYLOCK_PAGE
115 #define trylock_page(page) (!TestSetPageLocked(page))
118 #define LTIME_S(time) (time.tv_sec)
120 #ifdef HAVE_EXPORT_INODE_PERMISSION
121 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
123 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
126 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
127 # define ll_generic_permission(inode, mask, flags, check_acl) \
128 generic_permission(inode, mask)
129 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
130 # define ll_generic_permission(inode, mask, flags, check_acl) \
131 generic_permission(inode, mask, flags, check_acl)
133 # define ll_generic_permission(inode, mask, flags, check_acl) \
134 generic_permission(inode, mask, check_acl)
137 #ifdef HAVE_BLKDEV_PUT_2ARGS
138 #define ll_blkdev_put(a, b) blkdev_put(a, b)
140 #define ll_blkdev_put(a, b) blkdev_put(a)
143 static inline struct file *ll_dentry_open(struct dentry *dentry,
144 struct vfsmount *mnt, int flags,
145 const struct cred *cred)
147 #ifdef HAVE_DENTRY_OPEN_USE_PATH
148 struct path path = { .mnt = mnt, .dentry = dentry };
149 return dentry_open(&path, flags, cred);
150 #elif defined HAVE_DENTRY_OPEN_4ARGS
151 return dentry_open(dentry, mnt, flags, cred);
153 return dentry_open(dentry, mnt, flags);
157 #ifdef HAVE_SECURITY_PLUG
158 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
159 vfs_symlink(dir, dentry, mnt, path, mode)
161 #ifdef HAVE_4ARGS_VFS_SYMLINK
162 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
163 vfs_symlink(dir, dentry, path, mode)
165 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
166 vfs_symlink(dir, dentry, path)
171 #ifdef HAVE_INODE_DIO_WAIT
172 /* inode_dio_wait(i) use as-is for write lock */
173 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
174 # define inode_dio_read(i) atomic_inc(&(i)->i_dio_count)
175 /* inode_dio_done(i) use as-is for read unlock */
177 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
178 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
179 # define inode_dio_read(i) down_read(&(i)->i_alloc_sem)
180 # define inode_dio_done(i) up_read(&(i)->i_alloc_sem)
183 #ifdef HAVE_RW_TREE_LOCK
184 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
185 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
187 #define TREE_READ_LOCK_IRQ(mapping) spin_lock_irq(&(mapping)->tree_lock)
188 #define TREE_READ_UNLOCK_IRQ(mapping) spin_unlock_irq(&(mapping)->tree_lock)
191 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
192 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
195 int ll_unregister_blkdev(unsigned int dev, const char *name)
197 unregister_blkdev(dev, name);
202 #ifdef HAVE_INVALIDATE_BDEV_2ARG
203 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
205 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
208 #ifndef FS_HAS_FIEMAP
209 #define FS_HAS_FIEMAP (0)
212 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
213 #define FS_RENAME_DOES_D_MOVE FS_ODD_RENAME
216 #ifndef HAVE_D_OBTAIN_ALIAS
217 /* The old d_alloc_anon() didn't free the inode reference on error
218 * like d_obtain_alias(). Hide that difference/inconvenience here. */
219 static inline struct dentry *d_obtain_alias(struct inode *inode)
221 struct dentry *anon = d_alloc_anon(inode);
225 anon = ERR_PTR(-ENOMEM);
232 /* add a lustre compatible layer for crypto API */
233 #include <linux/crypto.h>
234 #ifdef HAVE_ASYNC_BLOCK_CIPHER
235 #define ll_crypto_hash crypto_hash
236 #define ll_crypto_cipher crypto_blkcipher
237 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
238 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
239 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
240 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
241 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
242 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
243 crypto_blkcipher_setkey(tfm, key, keylen)
244 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
245 crypto_blkcipher_set_iv(tfm, src, len)
246 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
247 crypto_blkcipher_get_iv(tfm, dst, len)
248 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
249 crypto_blkcipher_encrypt(desc, dst, src, bytes)
250 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
251 crypto_blkcipher_decrypt(desc, dst, src, bytes)
252 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
253 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
254 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
255 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
258 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
261 struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
263 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
266 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
267 u8 *key, unsigned int *keylen,
268 struct scatterlist *sg,
269 unsigned int size, u8 *result)
271 struct hash_desc desc;
275 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
277 CERROR("failed to hash setkey: %d\n", rv);
280 return crypto_hash_digest(&desc, sg, size, result);
283 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
285 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
288 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
290 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
293 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
294 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
295 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
296 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
297 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
298 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
299 #else /* HAVE_ASYNC_BLOCK_CIPHER */
300 #include <linux/scatterlist.h>
301 #define ll_crypto_hash crypto_tfm
302 #define ll_crypto_cipher crypto_tfm
303 #ifndef HAVE_STRUCT_HASH_DESC
305 struct ll_crypto_hash *tfm;
309 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
310 struct blkcipher_desc {
311 struct ll_crypto_cipher *tfm;
316 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
317 crypto_cipher_setkey(tfm, key, keylen)
318 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
319 crypto_cipher_set_iv(tfm, src, len)
320 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
321 crypto_cipher_get_iv(tfm, dst, len)
322 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
323 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
324 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
325 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
326 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
327 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
328 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
329 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
332 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
335 struct ll_crypto_cipher *rtn;
336 char buf[CRYPTO_MAX_ALG_NAME + 1];
337 const char *pan = algname;
340 if (strncmp("cbc(", algname, 4) == 0)
341 flag |= CRYPTO_TFM_MODE_CBC;
342 else if (strncmp("ecb(", algname, 4) == 0)
343 flag |= CRYPTO_TFM_MODE_ECB;
345 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
347 memcpy(buf, algname + 4, vp - algname - 4);
348 buf[vp - algname - 4] = '\0';
354 rtn = crypto_alloc_tfm(pan, flag);
355 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
359 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
361 char buf[CRYPTO_MAX_ALG_NAME + 1];
362 const char *pan = alg;
364 if (strncmp("hmac(", alg, 5) == 0) {
365 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
367 memcpy(buf, alg+ 5, vp - alg- 5);
368 buf[vp - alg - 5] = 0x00;
372 return crypto_alloc_tfm(pan, 0);
374 static inline int ll_crypto_hash_init(struct hash_desc *desc)
376 crypto_digest_init(desc->tfm); return 0;
378 static inline int ll_crypto_hash_update(struct hash_desc *desc,
379 struct scatterlist *sg,
382 struct scatterlist *sl = sg;
385 * This way is very weakness. We must ensure that
386 * the sum of sg[0..i]->length isn't greater than nbytes.
387 * In the upstream kernel the crypto_hash_update() also
388 * via the nbytes computed the count of sg[...].
389 * The old style is more safely. but it gone.
391 for (count = 0; nbytes > 0; count ++, sl ++) {
392 nbytes -= sl->length;
394 crypto_digest_update(desc->tfm, sg, count); return 0;
396 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
398 crypto_digest_final(desc->tfm, out); return 0;
400 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
401 u8 *key, unsigned int *keylen,
402 struct scatterlist *sg,
406 struct scatterlist *sl = sg;
408 for (count = 0; nbytes > 0; count ++, sl ++) {
409 nbytes -= sl->length;
411 crypto_hmac(tfm, key, keylen, sg, count, out);
415 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
416 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
417 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
418 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
419 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
420 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
421 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
422 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
423 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
424 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
426 #ifdef HAVE_SECURITY_PLUG
427 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
428 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
429 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
430 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
431 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
432 vfs_mknod(dir,entry,mnt,mode,dev)
433 #define ll_security_inode_unlink(dir,entry,mnt) \
434 security_inode_unlink(dir,entry,mnt)
435 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
436 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
438 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
439 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
440 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
441 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
442 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
443 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
444 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
445 vfs_rename(old,old_dir,new,new_dir)
446 #endif /* HAVE_SECURITY_PLUG */
448 #ifdef for_each_possible_cpu
449 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
450 #elif defined(for_each_cpu)
451 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
454 #ifdef HAVE_BIO_ENDIO_2ARG
455 #define cfs_bio_io_error(a,b) bio_io_error((a))
456 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
458 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
459 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
462 #ifdef HAVE_FS_STRUCT_USE_PATH
463 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
464 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
465 #define cfs_path_put(nd) path_put(&(nd)->path)
467 #define cfs_fs_pwd(fs) ((fs)->pwd)
468 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
469 #define cfs_path_put(nd) path_release(nd)
472 #ifndef HAVE_SIMPLE_SETATTR
473 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
476 #ifndef SLAB_DESTROY_BY_RCU
477 #define SLAB_DESTROY_BY_RCU 0
480 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
481 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
484 #ifndef HAVE_SB_ANY_QUOTA_LOADED
485 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
486 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
488 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
493 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
497 if (sb->s_qcop->quota_on) {
498 #ifdef HAVE_QUOTA_ON_USE_PATH
501 rc = kern_path(name, LOOKUP_FOLLOW, &path);
505 rc = sb->s_qcop->quota_on(sb, off, ver
506 #ifdef HAVE_QUOTA_ON_USE_PATH
511 #ifdef HAVE_QUOTA_ON_5ARGS
515 #ifdef HAVE_QUOTA_ON_USE_PATH
524 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
526 if (sb->s_qcop->quota_off) {
527 return sb->s_qcop->quota_off(sb, off
528 #ifdef HAVE_QUOTA_OFF_3ARGS
537 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
538 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
541 #ifndef HAVE_VFS_DQ_OFF
542 # define ll_vfs_dq_init DQUOT_INIT
543 # define ll_vfs_dq_drop DQUOT_DROP
544 # define ll_vfs_dq_transfer DQUOT_TRANSFER
545 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
547 # define ll_vfs_dq_init vfs_dq_init
548 # define ll_vfs_dq_drop vfs_dq_drop
549 # define ll_vfs_dq_transfer vfs_dq_transfer
550 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
554 #define ll_bdi_init(bdi) bdi_init(bdi)
555 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
557 #define ll_bdi_init(bdi) 0
558 #define ll_bdi_destroy(bdi) do { } while(0)
561 #ifdef HAVE_NEW_BACKING_DEV_INFO
562 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
564 # define ll_bdi_wb_cnt(bdi) 1
567 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
568 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
571 #ifndef HAVE_BLKDEV_GET_BY_DEV
572 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
575 #ifndef HAVE_REQUEST_QUEUE_LIMITS
576 #define queue_max_sectors(rq) ((rq)->max_sectors)
577 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
578 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
579 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
582 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
583 #define blk_queue_max_segments(rq, seg) \
584 do { blk_queue_max_phys_segments(rq, seg); \
585 blk_queue_max_hw_segments(rq, seg); } while (0)
587 #define queue_max_phys_segments(rq) queue_max_segments(rq)
588 #define queue_max_hw_segments(rq) queue_max_segments(rq)
591 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
592 #define ll_kmap_atomic(a, b) kmap_atomic(a)
593 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
595 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
596 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
599 #ifndef HAVE_CLEAR_INODE
600 #define clear_inode(i) end_writeback(i)
603 #ifdef HAVE_DENTRY_D_ALIAS_HLIST
604 #define ll_d_hlist_node hlist_node
605 #define ll_d_hlist_empty(list) hlist_empty(list)
606 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
607 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
608 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
609 hlist_for_each_entry(dentry, p, i_dentry, alias)
611 #define ll_d_hlist_node list_head
612 #define ll_d_hlist_empty(list) list_empty(list)
613 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
614 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
615 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
616 p = NULL; list_for_each_entry(dentry, i_dentry, alias)
620 #ifndef HAVE_BI_HW_SEGMENTS
621 #define bio_hw_segments(q, bio) 0
624 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
625 #define pagevec_lru_add_file pagevec_lru_add
628 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
629 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
630 add_to_page_cache_lru(pg, mapping, off, gfp)
631 #define ll_pagevec_init(pv, cold) do {} while (0)
632 #define ll_pagevec_add(pv, pg) (0)
633 #define ll_pagevec_lru_add_file(pv) do {} while (0)
635 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
636 add_to_page_cache(pg, mapping, off, gfp)
637 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
638 #define ll_pagevec_add(pv, pg) \
642 page_cache_get(pg); \
643 __ret = pagevec_add(pv, pg); \
645 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
648 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
649 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
650 #define HAVE_NODE_TO_CPUMASK
657 # define NO_QUOTA (-EDQUOT)
661 #define SEEK_DATA 3 /* seek to the next data */
664 #define SEEK_HOLE 4 /* seek to the next hole */
667 #ifndef FMODE_UNSIGNED_OFFSET
668 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
671 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
672 # define ext2_set_bit __test_and_set_bit_le
673 # define ext2_clear_bit __test_and_clear_bit_le
674 # define ext2_test_bit test_bit_le
675 # define ext2_find_first_zero_bit find_first_zero_bit_le
676 # define ext2_find_next_zero_bit find_next_zero_bit_le
679 #ifdef ATTR_TIMES_SET
680 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
682 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
685 #ifndef HAVE_SELINUX_IS_ENABLED
686 static inline bool selinux_is_enabled(void)
692 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
693 # define lm_compare_owner fl_compare_owner
697 * After 3.1, kernel's nameidata.intent.open.flags is different
698 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
699 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
700 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
702 #include <linux/version.h>
703 static inline int ll_namei_to_lookup_intent_flag(int flag)
705 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
706 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
711 #ifdef HAVE_VOID_MAKE_REQUEST_FN
712 # define ll_mrf_ret void
713 # define LL_MRF_RETURN(rc)
715 # define ll_mrf_ret int
716 # define LL_MRF_RETURN(rc) RETURN(rc)
719 #include <linux/fs.h>
720 #ifndef HAVE_PROTECT_I_NLINK
721 static inline void set_nlink(struct inode *inode, unsigned int nlink)
723 inode->i_nlink = nlink;
727 #ifdef HAVE_INODEOPS_USE_UMODE_T
728 # define ll_umode_t umode_t
730 # define ll_umode_t int
733 #include <linux/dcache.h>
734 #ifndef HAVE_D_MAKE_ROOT
735 static inline struct dentry *d_make_root(struct inode *root)
737 struct dentry *res = d_alloc_root(root);
739 if (res == NULL && root)
746 #endif /* _COMPAT25_H */