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
42 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
43 #error sorry, lustre requires at least linux kernel 2.6.9 or later
46 #include <linux/fs_struct.h>
47 #include <linux/namei.h>
48 #include <libcfs/linux/portals_compat25.h>
50 #include <linux/lustre_patchless_compat.h>
52 /* Some old kernels (like 2.6.9) may not define such SEEK_XXX. So the
53 * definition allows to compile lustre client on more OS platforms. */
60 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
63 unsigned int ia_attr_flags;
66 #define ll_iattr iattr
67 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
69 #ifdef HAVE_FS_STRUCT_RWLOCK
70 # define LOCK_FS_STRUCT(fs) cfs_write_lock(&(fs)->lock)
71 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
73 # define LOCK_FS_STRUCT(fs) cfs_spin_lock(&(fs)->lock)
74 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
77 #ifdef HAVE_FS_STRUCT_USE_PATH
78 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
79 struct dentry *dentry)
98 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
99 struct dentry *dentry)
101 struct dentry *old_pwd;
102 struct vfsmount *old_pwdmnt;
106 old_pwdmnt = fs->pwdmnt;
107 fs->pwdmnt = mntget(mnt);
108 fs->pwd = dget(dentry);
109 UNLOCK_FS_STRUCT(fs);
119 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
120 * ATTR_* attributes (see bug 13828)
122 #define ATTR_BLOCKS (1 << 27)
124 #if HAVE_INODE_I_MUTEX
125 #define UNLOCK_INODE_MUTEX(inode) \
126 do {cfs_mutex_unlock(&(inode)->i_mutex); } while(0)
127 #define LOCK_INODE_MUTEX(inode) \
128 do {cfs_mutex_lock(&(inode)->i_mutex); } while(0)
129 #define LOCK_INODE_MUTEX_PARENT(inode) \
130 do {cfs_mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
131 #define TRYLOCK_INODE_MUTEX(inode) cfs_mutex_trylock(&(inode)->i_mutex)
133 #define UNLOCK_INODE_MUTEX(inode) do cfs_up(&(inode)->i_sem); } while(0)
134 #define LOCK_INODE_MUTEX(inode) do cfs_down(&(inode)->i_sem); } while(0)
135 #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
136 #define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
137 #endif /* HAVE_INODE_I_MUTEX */
139 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
140 #define d_child d_u.d_child
141 #define d_rcu d_u.d_rcu
144 #ifdef HAVE_DQUOTOFF_MUTEX
145 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_unlock(&(dqopt)->dqonoff_mutex)
146 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_lock(&(dqopt)->dqonoff_mutex)
148 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_up(&(dqopt)->dqonoff_sem)
149 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_down(&(dqopt)->dqonoff_sem)
150 #endif /* HAVE_DQUOTOFF_MUTEX */
152 #define current_ngroups current_cred()->group_info->ngroups
153 #define current_groups current_cred()->group_info->small_block
156 #define page_private(page) ((page)->private)
157 #define set_page_private(page, v) ((page)->private = (v))
160 #define ll_kernel_locked() kernel_locked()
163 * OBD need working random driver, thus all our
164 * initialization routines must be called after device
165 * driver initialization
169 #define module_init(a) late_initcall(a)
172 /* XXX our code should be using the 2.6 calls, not the other way around */
173 #ifdef HAVE_TRYLOCK_PAGE
174 #define TestSetPageLocked(page) (!trylock_page(page))
177 #define Page_Uptodate(page) PageUptodate(page)
178 #define ll_redirty_page(page) set_page_dirty(page)
180 #define KDEVT_INIT(val) (val)
182 #define LTIME_S(time) (time.tv_sec)
183 #define ll_path_lookup path_lookup
185 #ifdef HAVE_EXPORT_INODE_PERMISSION
186 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
188 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
191 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
192 #define ll_generic_permission(inode, mask, flags, check_acl) \
193 generic_permission(inode, mask, flags, check_acl)
195 #define ll_generic_permission(inode, mask, flags, check_acl) \
196 generic_permission(inode, mask, check_acl)
199 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
200 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
201 #define ll_call_writepage(inode, page) \
202 (inode)->i_mapping->a_ops->writepage(page, NULL)
203 #define ll_invalidate_inode_pages(inode) \
204 invalidate_inode_pages((inode)->i_mapping)
206 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
207 #define ll_dev_t dev_t
209 #define to_kdev_t(dev) (dev)
210 #define kdev_t_to_nr(dev) (dev)
211 #define val_to_kdev(dev) (dev)
213 #ifdef HAVE_BLKDEV_PUT_2ARGS
214 #define ll_blkdev_put(a, b) blkdev_put(a, b)
216 #define ll_blkdev_put(a, b) blkdev_put(a)
219 #ifdef HAVE_DENTRY_OPEN_4ARGS
220 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
222 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
225 #include <linux/writeback.h>
227 static inline int cfs_cleanup_group_info(void)
229 struct group_info *ginfo;
231 ginfo = groups_alloc(0);
235 set_current_groups(ginfo);
236 put_group_info(ginfo);
241 #define __set_page_ll_data(page, llap) \
243 page_cache_get(page); \
244 SetPagePrivate(page); \
245 set_page_private(page, (unsigned long)llap); \
247 #define __clear_page_ll_data(page) \
249 ClearPagePrivate(page); \
250 set_page_private(page, 0); \
251 page_cache_release(page); \
256 #include <linux/proc_fs.h>
258 #define CheckWriteback(page, cmd) \
259 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
260 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
262 #ifdef HAVE_PAGE_LIST
263 static inline int mapping_has_pages(struct address_space *mapping)
267 ll_pgcache_lock(mapping);
268 if (cfs_list_empty(&mapping->dirty_pages) &&
269 cfs_list_empty(&mapping->clean_pages) &&
270 cfs_list_empty(&mapping->locked_pages)) {
273 ll_pgcache_unlock(mapping);
278 static inline int mapping_has_pages(struct address_space *mapping)
280 return mapping->nrpages > 0;
284 #ifdef HAVE_KIOBUF_KIO_BLOCKS
285 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
287 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
290 #ifdef HAVE_SECURITY_PLUG
291 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
292 vfs_symlink(dir, dentry, mnt, path, mode)
294 #ifdef HAVE_4ARGS_VFS_SYMLINK
295 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
296 vfs_symlink(dir, dentry, path, mode)
298 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
299 vfs_symlink(dir, dentry, path)
305 #define container_of(ptr, type, member) ({ \
306 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
307 (type *)( (char *)__mptr - offsetof(type,member) );})
310 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
311 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
312 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
314 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
315 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
316 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
318 #include <linux/mpage.h> /* for generic_writepages */
320 #ifndef HAVE_ATOMIC_MNT_COUNT
321 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
324 unsigned int count = 0;
327 for_each_possible_cpu(cpu) {
328 count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
333 return mnt->mnt_count;
337 # define mnt_get_count(mnt) cfs_atomic_read(&mnt->mnt_count)
340 #ifdef HAVE_STATFS_DENTRY_PARAM
341 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
343 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
346 #ifndef HAVE_SB_TIME_GRAN
347 #ifndef HAVE_S_TIME_GRAN
348 #error Need s_time_gran patch!
350 static inline u32 get_sb_time_gran(struct super_block *sb)
352 return sb->s_time_gran;
356 #ifdef HAVE_RW_TREE_LOCK
357 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
358 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
360 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
361 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
364 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
365 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
368 int ll_unregister_blkdev(unsigned int dev, const char *name)
370 unregister_blkdev(dev, name);
375 #ifdef HAVE_INVALIDATE_BDEV_2ARG
376 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
378 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
381 #ifdef HAVE_INODE_BLKSIZE
382 #define ll_inode_blksize(a) (a)->i_blksize
384 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
387 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
388 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
390 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
393 #ifndef HAVE_D_OBTAIN_ALIAS
394 /* The old d_alloc_anon() didn't free the inode reference on error
395 * like d_obtain_alias(). Hide that difference/inconvenience here. */
396 static inline struct dentry *d_obtain_alias(struct inode *inode)
398 struct dentry *anon = d_alloc_anon(inode);
402 anon = ERR_PTR(-ENOMEM);
409 /* add a lustre compatible layer for crypto API */
410 #include <linux/crypto.h>
411 #ifdef HAVE_ASYNC_BLOCK_CIPHER
412 #define ll_crypto_hash crypto_hash
413 #define ll_crypto_cipher crypto_blkcipher
414 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
415 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
416 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
417 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
418 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
419 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
420 crypto_blkcipher_setkey(tfm, key, keylen)
421 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
422 crypto_blkcipher_set_iv(tfm, src, len)
423 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
424 crypto_blkcipher_get_iv(tfm, dst, len)
425 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
426 crypto_blkcipher_encrypt(desc, dst, src, bytes)
427 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
428 crypto_blkcipher_decrypt(desc, dst, src, bytes)
429 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
430 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
431 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
432 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
435 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
438 struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
440 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
443 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
444 u8 *key, unsigned int *keylen,
445 struct scatterlist *sg,
446 unsigned int size, u8 *result)
448 struct hash_desc desc;
452 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
454 CERROR("failed to hash setkey: %d\n", rv);
457 return crypto_hash_digest(&desc, sg, size, result);
460 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
462 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
465 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
467 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
470 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
471 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
472 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
473 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
474 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
475 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
476 #else /* HAVE_ASYNC_BLOCK_CIPHER */
477 #include <linux/scatterlist.h>
478 #define ll_crypto_hash crypto_tfm
479 #define ll_crypto_cipher crypto_tfm
480 #ifndef HAVE_STRUCT_HASH_DESC
482 struct ll_crypto_hash *tfm;
486 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
487 struct blkcipher_desc {
488 struct ll_crypto_cipher *tfm;
493 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
494 crypto_cipher_setkey(tfm, key, keylen)
495 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
496 crypto_cipher_set_iv(tfm, src, len)
497 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
498 crypto_cipher_get_iv(tfm, dst, len)
499 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
500 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
501 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
502 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
503 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
504 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
505 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
506 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
509 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
512 struct ll_crypto_cipher *rtn;
513 char buf[CRYPTO_MAX_ALG_NAME + 1];
514 const char *pan = algname;
517 if (strncmp("cbc(", algname, 4) == 0)
518 flag |= CRYPTO_TFM_MODE_CBC;
519 else if (strncmp("ecb(", algname, 4) == 0)
520 flag |= CRYPTO_TFM_MODE_ECB;
522 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
524 memcpy(buf, algname + 4, vp - algname - 4);
525 buf[vp - algname - 4] = '\0';
531 rtn = crypto_alloc_tfm(pan, flag);
532 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
536 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
538 char buf[CRYPTO_MAX_ALG_NAME + 1];
539 const char *pan = alg;
541 if (strncmp("hmac(", alg, 5) == 0) {
542 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
544 memcpy(buf, alg+ 5, vp - alg- 5);
545 buf[vp - alg - 5] = 0x00;
549 return crypto_alloc_tfm(pan, 0);
551 static inline int ll_crypto_hash_init(struct hash_desc *desc)
553 crypto_digest_init(desc->tfm); return 0;
555 static inline int ll_crypto_hash_update(struct hash_desc *desc,
556 struct scatterlist *sg,
559 struct scatterlist *sl = sg;
562 * This way is very weakness. We must ensure that
563 * the sum of sg[0..i]->length isn't greater than nbytes.
564 * In the upstream kernel the crypto_hash_update() also
565 * via the nbytes computed the count of sg[...].
566 * The old style is more safely. but it gone.
568 for (count = 0; nbytes > 0; count ++, sl ++) {
569 nbytes -= sl->length;
571 crypto_digest_update(desc->tfm, sg, count); return 0;
573 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
575 crypto_digest_final(desc->tfm, out); return 0;
577 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
578 u8 *key, unsigned int *keylen,
579 struct scatterlist *sg,
583 struct scatterlist *sl = sg;
585 for (count = 0; nbytes > 0; count ++, sl ++) {
586 nbytes -= sl->length;
588 crypto_hmac(tfm, key, keylen, sg, count, out);
592 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
593 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
594 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
595 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
596 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
597 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
598 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
599 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
600 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
601 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
603 #ifdef HAVE_FILE_REMOVE_SUID
604 # define ll_remove_suid(file, mnt) file_remove_suid(file)
606 # ifdef HAVE_SECURITY_PLUG
607 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
609 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
613 #ifdef HAVE_SECURITY_PLUG
614 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
615 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
616 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
617 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
618 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
619 vfs_mknod(dir,entry,mnt,mode,dev)
620 #define ll_security_inode_unlink(dir,entry,mnt) \
621 security_inode_unlink(dir,entry,mnt)
622 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
623 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
625 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
626 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
627 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
628 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
629 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
630 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
631 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
632 vfs_rename(old,old_dir,new,new_dir)
633 #endif /* HAVE_SECURITY_PLUG */
635 #ifdef for_each_possible_cpu
636 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
637 #elif defined(for_each_cpu)
638 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
641 #ifdef HAVE_BIO_ENDIO_2ARG
642 #define cfs_bio_io_error(a,b) bio_io_error((a))
643 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
645 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
646 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
649 #ifdef HAVE_FS_STRUCT_USE_PATH
650 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
651 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
652 #define cfs_path_put(nd) path_put(&(nd)->path)
654 #define cfs_fs_pwd(fs) ((fs)->pwd)
655 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
656 #define cfs_path_put(nd) path_release(nd)
660 static inline int abs(int x)
662 return (x < 0) ? -x : x;
667 static inline long labs(long x)
669 return (x < 0) ? -x : x;
671 #endif /* HAVE_REGISTER_SHRINKER */
673 #ifdef HAVE_INVALIDATE_INODE_PAGES
674 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
677 #ifdef HAVE_INODE_IPRIVATE
678 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
680 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
683 #ifndef HAVE_SIMPLE_SETATTR
684 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
687 #ifndef SLAB_DESTROY_BY_RCU
688 #define CFS_SLAB_DESTROY_BY_RCU 0
690 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
693 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
694 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
696 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
699 #ifdef HAVE_SB_ANY_QUOTA_LOADED
700 #define ll_sb_any_quota_active(sb) sb_any_quota_loaded(sb)
701 #elif defined(HAVE_SB_ANY_QUOTA_ACTIVE)
702 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
704 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
708 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
712 if (sb->s_qcop->quota_on) {
713 #ifdef HAVE_QUOTA_ON_USE_PATH
716 rc = kern_path(name, LOOKUP_FOLLOW, &path);
720 rc = sb->s_qcop->quota_on(sb, off, ver
721 #ifdef HAVE_QUOTA_ON_USE_PATH
726 #ifdef HAVE_QUOTA_ON_5ARGS
730 #ifdef HAVE_QUOTA_ON_USE_PATH
739 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
741 if (sb->s_qcop->quota_off) {
742 return sb->s_qcop->quota_off(sb, off
743 #ifdef HAVE_QUOTA_OFF_3ARGS
752 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
753 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
756 #ifndef HAVE_VFS_DQ_OFF
757 # define ll_vfs_dq_init DQUOT_INIT
758 # define ll_vfs_dq_drop DQUOT_DROP
759 # define ll_vfs_dq_transfer DQUOT_TRANSFER
760 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
762 # define ll_vfs_dq_init vfs_dq_init
763 # define ll_vfs_dq_drop vfs_dq_drop
764 # define ll_vfs_dq_transfer vfs_dq_transfer
765 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
769 #define ll_bdi_init(bdi) bdi_init(bdi)
770 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
772 #define ll_bdi_init(bdi) 0
773 #define ll_bdi_destroy(bdi) do { } while(0)
776 #ifdef HAVE_NEW_BACKING_DEV_INFO
777 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
779 # define ll_bdi_wb_cnt(bdi) 1
782 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
783 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
786 #ifndef HAVE_BLKDEV_GET_BY_DEV
787 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
790 #ifndef HAVE_REQUEST_QUEUE_LIMITS
791 #define queue_max_sectors(rq) ((rq)->max_sectors)
792 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
793 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
794 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
797 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
798 #define blk_queue_max_segments(rq, seg) \
799 do { blk_queue_max_phys_segments(rq, seg); \
800 blk_queue_max_hw_segments(rq, seg); } while (0)
802 #define queue_max_phys_segments(rq) queue_max_segments(rq)
803 #define queue_max_hw_segments(rq) queue_max_segments(rq)
807 #ifndef HAVE_BI_HW_SEGMENTS
808 #define bio_hw_segments(q, bio) 0
811 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
812 #define pagevec_lru_add_file pagevec_lru_add
815 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
816 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
817 add_to_page_cache_lru(pg, mapping, off, gfp)
818 #define ll_pagevec_init(pv, cold) do {} while (0)
819 #define ll_pagevec_add(pv, pg) (0)
820 #define ll_pagevec_lru_add_file(pv) do {} while (0)
822 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
823 add_to_page_cache(pg, mapping, off, gfp)
824 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
825 #define ll_pagevec_add(pv, pg) pagevec_add(pv, pg)
826 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
829 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
830 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
831 #define HAVE_NODE_TO_CPUMASK
838 # define NO_QUOTA (-EDQUOT)
841 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
842 # define ext2_set_bit __test_and_set_bit_le
843 # define ext2_clear_bit __test_and_clear_bit_le
844 # define ext2_test_bit test_bit_le
845 # define ext2_find_first_zero_bit find_first_zero_bit_le
846 # define ext2_find_next_zero_bit find_next_zero_bit_le
849 #ifdef ATTR_TIMES_SET
850 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
852 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
855 #ifndef HAVE_SELINUX_IS_ENABLED
856 static inline bool selinux_is_enabled(void)
862 #endif /* __KERNEL__ */
863 #endif /* _COMPAT25_H */