1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * Copyright (c) 2011 Whamcloud, Inc.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
40 #ifndef _LINUX_COMPAT25_H
41 #define _LINUX_COMPAT25_H
45 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
46 #error sorry, lustre requires at least linux kernel 2.6.9 or later
49 #include <linux/fs_struct.h>
50 #include <libcfs/linux/portals_compat25.h>
52 #include <linux/lustre_patchless_compat.h>
54 /* Some old kernels (like 2.6.9) may not define such SEEK_XXX. So the
55 * definition allows to compile lustre client on more OS platforms. */
62 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
65 unsigned int ia_attr_flags;
68 #define ll_iattr iattr
69 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
71 #ifdef HAVE_FS_STRUCT_USE_PATH
72 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
73 struct dentry *dentry)
80 write_lock(&fs->lock);
84 write_unlock(&fs->lock);
92 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
93 struct dentry *dentry)
95 struct dentry *old_pwd;
96 struct vfsmount *old_pwdmnt;
98 cfs_write_lock(&fs->lock);
100 old_pwdmnt = fs->pwdmnt;
101 fs->pwdmnt = mntget(mnt);
102 fs->pwd = dget(dentry);
103 cfs_write_unlock(&fs->lock);
113 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
114 * ATTR_* attributes (see bug 13828)
116 #define ATTR_BLOCKS (1 << 27)
118 #if HAVE_INODE_I_MUTEX
119 #define UNLOCK_INODE_MUTEX(inode) \
120 do {cfs_mutex_unlock(&(inode)->i_mutex); } while(0)
121 #define LOCK_INODE_MUTEX(inode) \
122 do {cfs_mutex_lock(&(inode)->i_mutex); } while(0)
123 #define LOCK_INODE_MUTEX_PARENT(inode) \
124 do {cfs_mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
125 #define TRYLOCK_INODE_MUTEX(inode) cfs_mutex_trylock(&(inode)->i_mutex)
127 #define UNLOCK_INODE_MUTEX(inode) do cfs_up(&(inode)->i_sem); } while(0)
128 #define LOCK_INODE_MUTEX(inode) do cfs_down(&(inode)->i_sem); } while(0)
129 #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
130 #define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
131 #endif /* HAVE_INODE_I_MUTEX */
134 #define LL_SEQ_LOCK(seq) cfs_mutex_lock(&(seq)->lock)
135 #define LL_SEQ_UNLOCK(seq) cfs_mutex_unlock(&(seq)->lock)
137 #define LL_SEQ_LOCK(seq) cfs_down(&(seq)->sem)
138 #define LL_SEQ_UNLOCK(seq) cfs_up(&(seq)->sem)
141 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
142 #define d_child d_u.d_child
143 #define d_rcu d_u.d_rcu
146 #ifdef HAVE_DQUOTOFF_MUTEX
147 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_unlock(&(dqopt)->dqonoff_mutex)
148 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_lock(&(dqopt)->dqonoff_mutex)
150 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_up(&(dqopt)->dqonoff_sem)
151 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_down(&(dqopt)->dqonoff_sem)
152 #endif /* HAVE_DQUOTOFF_MUTEX */
154 #define current_ngroups current_cred()->group_info->ngroups
155 #define current_groups current_cred()->group_info->small_block
158 #define page_private(page) ((page)->private)
159 #define set_page_private(page, v) ((page)->private = (v))
166 #define lock_dentry(___dentry) cfs_spin_lock(&(___dentry)->d_lock)
167 #define unlock_dentry(___dentry) cfs_spin_unlock(&(___dentry)->d_lock)
169 #define ll_kernel_locked() kernel_locked()
172 * OBD need working random driver, thus all our
173 * initialization routines must be called after device
174 * driver initialization
178 #define module_init(a) late_initcall(a)
181 /* XXX our code should be using the 2.6 calls, not the other way around */
182 #ifdef HAVE_TRYLOCK_PAGE
183 #define TestSetPageLocked(page) (!trylock_page(page))
186 #define Page_Uptodate(page) PageUptodate(page)
187 #define ll_redirty_page(page) set_page_dirty(page)
189 #define KDEVT_INIT(val) (val)
191 #define LTIME_S(time) (time.tv_sec)
192 #define ll_path_lookup path_lookup
194 #ifdef HAVE_EXPORT_INODE_PERMISSION
195 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
197 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
200 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
201 #define ll_generic_permission(inode, mask, flags, check_acl) \
202 generic_permission(inode, mask, flags, check_acl)
204 #define ll_generic_permission(inode, mask, flags, check_acl) \
205 generic_permission(inode, mask, check_acl)
208 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
209 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
210 #define ll_call_writepage(inode, page) \
211 (inode)->i_mapping->a_ops->writepage(page, NULL)
212 #define ll_invalidate_inode_pages(inode) \
213 invalidate_inode_pages((inode)->i_mapping)
215 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
216 #define ll_dev_t dev_t
218 #define to_kdev_t(dev) (dev)
219 #define kdev_t_to_nr(dev) (dev)
220 #define val_to_kdev(dev) (dev)
222 #ifdef HAVE_BLKDEV_PUT_2ARGS
223 #define ll_blkdev_put(a, b) blkdev_put(a, b)
225 #define ll_blkdev_put(a, b) blkdev_put(a)
228 #ifdef HAVE_DENTRY_OPEN_4ARGS
229 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
231 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
234 #include <linux/writeback.h>
236 static inline int cfs_cleanup_group_info(void)
238 struct group_info *ginfo;
240 ginfo = groups_alloc(0);
244 set_current_groups(ginfo);
245 put_group_info(ginfo);
250 #define __set_page_ll_data(page, llap) \
252 page_cache_get(page); \
253 SetPagePrivate(page); \
254 set_page_private(page, (unsigned long)llap); \
256 #define __clear_page_ll_data(page) \
258 ClearPagePrivate(page); \
259 set_page_private(page, 0); \
260 page_cache_release(page); \
265 #include <linux/proc_fs.h>
267 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH)
268 #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock)
269 extern void __d_rehash(struct dentry *dentry, int lock);
272 #ifdef HAVE_CAN_SLEEP_ARG
273 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
274 flock_lock_file_wait(file, lock, can_sleep)
276 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
277 flock_lock_file_wait(file, lock)
280 #define CheckWriteback(page, cmd) \
281 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
282 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
284 #ifdef HAVE_PAGE_LIST
285 static inline int mapping_has_pages(struct address_space *mapping)
289 ll_pgcache_lock(mapping);
290 if (cfs_list_empty(&mapping->dirty_pages) &&
291 cfs_list_empty(&mapping->clean_pages) &&
292 cfs_list_empty(&mapping->locked_pages)) {
295 ll_pgcache_unlock(mapping);
300 static inline int mapping_has_pages(struct address_space *mapping)
302 return mapping->nrpages > 0;
306 #ifdef HAVE_KIOBUF_KIO_BLOCKS
307 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
309 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
312 #ifdef HAVE_SECURITY_PLUG
313 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
314 vfs_symlink(dir, dentry, mnt, path, mode)
316 #ifdef HAVE_4ARGS_VFS_SYMLINK
317 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
318 vfs_symlink(dir, dentry, path, mode)
320 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
321 vfs_symlink(dir, dentry, path)
324 #define ll_set_dflags(dentry, flags) do { \
325 cfs_spin_lock(&dentry->d_lock); \
326 dentry->d_flags |= flags; \
327 cfs_spin_unlock(&dentry->d_lock); \
332 #define container_of(ptr, type, member) ({ \
333 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
334 (type *)( (char *)__mptr - offsetof(type,member) );})
337 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
338 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
339 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
341 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
342 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
343 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
345 #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP
346 #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y))
349 #include <linux/mpage.h> /* for generic_writepages */
350 #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
351 #include <linux/backing-dev.h> /* for mapping->backing_dev_info */
352 static inline int filemap_fdatawrite_range(struct address_space *mapping,
353 loff_t start, loff_t end)
356 struct writeback_control wbc = {
357 .sync_mode = WB_SYNC_ALL,
358 .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
361 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
362 wbc.range_start = start;
369 #ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
370 if (!mapping_cap_writeback_dirty(mapping))
373 if (mapping->backing_dev_info->memory_backed)
376 /* do_writepages() */
377 else if (mapping->a_ops->writepages)
378 rc = mapping->a_ops->writepages(mapping, &wbc);
380 rc = generic_writepages(mapping, &wbc);
384 int filemap_fdatawrite_range(struct address_space *mapping,
385 loff_t start, loff_t end);
386 #endif /* HAVE_FILEMAP_FDATAWRITE_RANGE */
388 #ifdef HAVE_VFS_KERN_MOUNT
389 static inline struct vfsmount *
390 ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
392 struct file_system_type *type = get_fs_type(fstype);
393 struct vfsmount *mnt;
395 return ERR_PTR(-ENODEV);
396 mnt = vfs_kern_mount(type, flags, name, data);
397 cfs_module_put(type->owner);
401 #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
404 #ifdef HAVE_STATFS_DENTRY_PARAM
405 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
407 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
410 #ifndef HAVE_SB_TIME_GRAN
411 #ifndef HAVE_S_TIME_GRAN
412 #error Need s_time_gran patch!
414 static inline u32 get_sb_time_gran(struct super_block *sb)
416 return sb->s_time_gran;
420 #ifdef HAVE_RW_TREE_LOCK
421 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
422 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
424 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
425 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
428 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
429 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
432 int ll_unregister_blkdev(unsigned int dev, const char *name)
434 unregister_blkdev(dev, name);
439 #ifdef HAVE_INVALIDATE_BDEV_2ARG
440 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
442 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
445 #ifdef HAVE_INODE_BLKSIZE
446 #define ll_inode_blksize(a) (a)->i_blksize
448 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
451 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
452 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
454 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
457 #ifndef HAVE_D_OBTAIN_ALIAS
458 /* The old d_alloc_anon() didn't free the inode reference on error
459 * like d_obtain_alias(). Hide that difference/inconvenience here. */
460 static inline struct dentry *d_obtain_alias(struct inode *inode)
462 struct dentry *anon = d_alloc_anon(inode);
466 anon = ERR_PTR(-ENOMEM);
473 /* add a lustre compatible layer for crypto API */
474 #include <linux/crypto.h>
475 #ifdef HAVE_ASYNC_BLOCK_CIPHER
476 #define ll_crypto_hash crypto_hash
477 #define ll_crypto_cipher crypto_blkcipher
478 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
479 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
480 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
481 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
482 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
483 #define ll_crypto_alloc_blkcipher(name, type, mask) \
484 crypto_alloc_blkcipher(name ,type, mask)
485 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
486 crypto_blkcipher_setkey(tfm, key, keylen)
487 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
488 crypto_blkcipher_set_iv(tfm, src, len)
489 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
490 crypto_blkcipher_get_iv(tfm, dst, len)
491 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
492 crypto_blkcipher_encrypt(desc, dst, src, bytes)
493 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
494 crypto_blkcipher_decrypt(desc, dst, src, bytes)
495 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
496 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
497 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
498 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
500 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
501 u8 *key, unsigned int *keylen,
502 struct scatterlist *sg,
503 unsigned int size, u8 *result)
505 struct hash_desc desc;
509 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
511 CERROR("failed to hash setkey: %d\n", rv);
514 return crypto_hash_digest(&desc, sg, size, result);
517 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
519 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
522 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
524 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
527 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
528 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
529 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
530 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
531 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
532 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
533 #else /* HAVE_ASYNC_BLOCK_CIPHER */
534 #include <linux/scatterlist.h>
535 #define ll_crypto_hash crypto_tfm
536 #define ll_crypto_cipher crypto_tfm
537 #ifndef HAVE_STRUCT_HASH_DESC
539 struct ll_crypto_hash *tfm;
543 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
544 struct blkcipher_desc {
545 struct ll_crypto_cipher *tfm;
550 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
551 crypto_cipher_setkey(tfm, key, keylen)
552 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
553 crypto_cipher_set_iv(tfm, src, len)
554 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
555 crypto_cipher_get_iv(tfm, dst, len)
556 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
557 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
558 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
559 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
560 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
561 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
562 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
563 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
566 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
569 char buf[CRYPTO_MAX_ALG_NAME + 1];
570 const char *pan = algname;
573 if (strncmp("cbc(", algname, 4) == 0)
574 flag |= CRYPTO_TFM_MODE_CBC;
575 else if (strncmp("ecb(", algname, 4) == 0)
576 flag |= CRYPTO_TFM_MODE_ECB;
578 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
580 memcpy(buf, algname + 4, vp - algname - 4);
581 buf[vp - algname - 4] = '\0';
587 return crypto_alloc_tfm(pan, flag);
591 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
593 char buf[CRYPTO_MAX_ALG_NAME + 1];
594 const char *pan = alg;
596 if (strncmp("hmac(", alg, 5) == 0) {
597 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
599 memcpy(buf, alg+ 5, vp - alg- 5);
600 buf[vp - alg - 5] = 0x00;
604 return crypto_alloc_tfm(pan, 0);
606 static inline int ll_crypto_hash_init(struct hash_desc *desc)
608 crypto_digest_init(desc->tfm); return 0;
610 static inline int ll_crypto_hash_update(struct hash_desc *desc,
611 struct scatterlist *sg,
614 struct scatterlist *sl = sg;
617 * This way is very weakness. We must ensure that
618 * the sum of sg[0..i]->length isn't greater than nbytes.
619 * In the upstream kernel the crypto_hash_update() also
620 * via the nbytes computed the count of sg[...].
621 * The old style is more safely. but it gone.
623 for (count = 0; nbytes > 0; count ++, sl ++) {
624 nbytes -= sl->length;
626 crypto_digest_update(desc->tfm, sg, count); return 0;
628 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
630 crypto_digest_final(desc->tfm, out); return 0;
632 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
633 u8 *key, unsigned int *keylen,
634 struct scatterlist *sg,
638 struct scatterlist *sl = sg;
640 for (count = 0; nbytes > 0; count ++, sl ++) {
641 nbytes -= sl->length;
643 crypto_hmac(tfm, key, keylen, sg, count, out);
647 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
648 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
649 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
650 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
651 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
652 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
653 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
654 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
655 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
656 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
658 #ifndef HAVE_SYNCHRONIZE_RCU
659 /* Linux 2.6.32 provides define when !CONFIG_TREE_PREEMPT_RCU */
660 #ifndef synchronize_rcu
661 #define synchronize_rcu() synchronize_kernel()
665 #ifdef HAVE_FILE_REMOVE_SUID
666 # define ll_remove_suid(file, mnt) file_remove_suid(file)
668 # ifdef HAVE_SECURITY_PLUG
669 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
671 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
675 #ifdef HAVE_SECURITY_PLUG
676 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
677 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
678 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
679 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
680 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
681 vfs_mknod(dir,entry,mnt,mode,dev)
682 #define ll_security_inode_unlink(dir,entry,mnt) \
683 security_inode_unlink(dir,entry,mnt)
684 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
685 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
687 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
688 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
689 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
690 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
691 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
692 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
693 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
694 vfs_rename(old,old_dir,new,new_dir)
695 #endif /* HAVE_SECURITY_PLUG */
697 #ifdef for_each_possible_cpu
698 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
699 #elif defined(for_each_cpu)
700 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
703 #ifdef HAVE_BIO_ENDIO_2ARG
704 #define cfs_bio_io_error(a,b) bio_io_error((a))
705 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
707 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
708 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
711 #ifdef HAVE_FS_STRUCT_USE_PATH
712 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
713 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
714 #define cfs_path_put(nd) path_put(&(nd)->path)
716 #define cfs_fs_pwd(fs) ((fs)->pwd)
717 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
718 #define cfs_path_put(nd) path_release(nd)
722 static inline int abs(int x)
724 return (x < 0) ? -x : x;
729 static inline long labs(long x)
731 return (x < 0) ? -x : x;
733 #endif /* HAVE_REGISTER_SHRINKER */
735 #ifdef HAVE_INVALIDATE_INODE_PAGES
736 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
739 #ifdef HAVE_INODE_IPRIVATE
740 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
742 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
745 #ifndef SLAB_DESTROY_BY_RCU
746 #define CFS_SLAB_DESTROY_BY_RCU 0
748 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
751 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
752 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
754 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
757 #ifdef HAVE_SB_ANY_QUOTA_ACTIVE
758 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
760 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
764 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
766 if (sb->s_qcop->quota_on) {
767 return sb->s_qcop->quota_on(sb, off, ver, name
768 #ifdef HAVE_QUOTA_ON_5ARGS
777 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
779 if (sb->s_qcop->quota_off) {
780 return sb->s_qcop->quota_off(sb, off
781 #ifdef HAVE_QUOTA_OFF_3ARGS
790 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
791 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
794 #ifndef HAVE_VFS_DQ_OFF
795 # define ll_vfs_dq_init DQUOT_INIT
796 # define ll_vfs_dq_drop DQUOT_DROP
797 # define ll_vfs_dq_transfer DQUOT_TRANSFER
798 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
800 # define ll_vfs_dq_init vfs_dq_init
801 # define ll_vfs_dq_drop vfs_dq_drop
802 # define ll_vfs_dq_transfer vfs_dq_transfer
803 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
807 #define ll_bdi_init(bdi) bdi_init(bdi)
808 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
810 #define ll_bdi_init(bdi) 0
811 #define ll_bdi_destroy(bdi) do { } while(0)
814 #ifdef HAVE_NEW_BACKING_DEV_INFO
815 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
817 # define ll_bdi_wb_cnt(bdi) 1
820 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
821 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
824 #ifndef HAVE_BLKDEV_GET_BY_DEV
825 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
828 #ifndef HAVE_REQUEST_QUEUE_LIMITS
829 #define queue_max_sectors(rq) ((rq)->max_sectors)
830 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
831 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
832 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
835 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
836 #define blk_queue_max_segments(rq, seg) \
837 do { blk_queue_max_phys_segments(rq, seg); \
838 blk_queue_max_hw_segments(rq, seg); } while (0)
840 #define queue_max_phys_segments(rq) queue_max_segments(rq)
841 #define queue_max_hw_segments(rq) queue_max_segments(rq)
845 #ifndef HAVE_BI_HW_SEGMENTS
846 #define bio_hw_segments(q, bio) 0
849 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
850 #define pagevec_lru_add_file pagevec_lru_add
853 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
854 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
855 add_to_page_cache_lru(pg, mapping, off, gfp)
856 #define ll_pagevec_init(pv, cold) do {} while (0)
857 #define ll_pagevec_add(pv, pg) (0)
858 #define ll_pagevec_lru_add_file(pv) do {} while (0)
860 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
861 add_to_page_cache(pg, mapping, off, gfp)
862 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
863 #define ll_pagevec_add(pv, pg) pagevec_add(pv, pg)
864 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
867 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
868 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
869 #define HAVE_NODE_TO_CPUMASK
872 #endif /* __KERNEL__ */
873 #endif /* _COMPAT25_H */