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 <linux/namei.h>
51 #include <libcfs/linux/portals_compat25.h>
53 #include <linux/lustre_patchless_compat.h>
55 /* Some old kernels (like 2.6.9) may not define such SEEK_XXX. So the
56 * definition allows to compile lustre client on more OS platforms. */
63 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
66 unsigned int ia_attr_flags;
69 #define ll_iattr iattr
70 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
72 #ifdef HAVE_FS_STRUCT_RWLOCK
73 # define LOCK_FS_STRUCT(fs) cfs_write_lock(&(fs)->lock)
74 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
76 # define LOCK_FS_STRUCT(fs) cfs_spin_lock(&(fs)->lock)
77 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
80 #ifdef HAVE_FS_STRUCT_USE_PATH
81 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
82 struct dentry *dentry)
101 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
102 struct dentry *dentry)
104 struct dentry *old_pwd;
105 struct vfsmount *old_pwdmnt;
109 old_pwdmnt = fs->pwdmnt;
110 fs->pwdmnt = mntget(mnt);
111 fs->pwd = dget(dentry);
112 UNLOCK_FS_STRUCT(fs);
122 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
123 * ATTR_* attributes (see bug 13828)
125 #define ATTR_BLOCKS (1 << 27)
127 #if HAVE_INODE_I_MUTEX
128 #define UNLOCK_INODE_MUTEX(inode) \
129 do {cfs_mutex_unlock(&(inode)->i_mutex); } while(0)
130 #define LOCK_INODE_MUTEX(inode) \
131 do {cfs_mutex_lock(&(inode)->i_mutex); } while(0)
132 #define LOCK_INODE_MUTEX_PARENT(inode) \
133 do {cfs_mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
134 #define TRYLOCK_INODE_MUTEX(inode) cfs_mutex_trylock(&(inode)->i_mutex)
136 #define UNLOCK_INODE_MUTEX(inode) do cfs_up(&(inode)->i_sem); } while(0)
137 #define LOCK_INODE_MUTEX(inode) do cfs_down(&(inode)->i_sem); } while(0)
138 #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
139 #define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
140 #endif /* HAVE_INODE_I_MUTEX */
143 #define LL_SEQ_LOCK(seq) cfs_mutex_lock(&(seq)->lock)
144 #define LL_SEQ_UNLOCK(seq) cfs_mutex_unlock(&(seq)->lock)
146 #define LL_SEQ_LOCK(seq) cfs_down(&(seq)->sem)
147 #define LL_SEQ_UNLOCK(seq) cfs_up(&(seq)->sem)
150 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
151 #define d_child d_u.d_child
152 #define d_rcu d_u.d_rcu
155 #ifdef HAVE_DQUOTOFF_MUTEX
156 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_unlock(&(dqopt)->dqonoff_mutex)
157 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_lock(&(dqopt)->dqonoff_mutex)
159 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_up(&(dqopt)->dqonoff_sem)
160 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_down(&(dqopt)->dqonoff_sem)
161 #endif /* HAVE_DQUOTOFF_MUTEX */
163 #define current_ngroups current_cred()->group_info->ngroups
164 #define current_groups current_cred()->group_info->small_block
167 #define page_private(page) ((page)->private)
168 #define set_page_private(page, v) ((page)->private = (v))
175 #define lock_dentry(___dentry) cfs_spin_lock(&(___dentry)->d_lock)
176 #define unlock_dentry(___dentry) cfs_spin_unlock(&(___dentry)->d_lock)
178 #define ll_kernel_locked() kernel_locked()
181 * OBD need working random driver, thus all our
182 * initialization routines must be called after device
183 * driver initialization
187 #define module_init(a) late_initcall(a)
190 /* XXX our code should be using the 2.6 calls, not the other way around */
191 #ifdef HAVE_TRYLOCK_PAGE
192 #define TestSetPageLocked(page) (!trylock_page(page))
195 #define Page_Uptodate(page) PageUptodate(page)
196 #define ll_redirty_page(page) set_page_dirty(page)
198 #define KDEVT_INIT(val) (val)
200 #define LTIME_S(time) (time.tv_sec)
201 #define ll_path_lookup path_lookup
203 #ifdef HAVE_EXPORT_INODE_PERMISSION
204 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
206 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
209 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
210 #define ll_generic_permission(inode, mask, flags, check_acl) \
211 generic_permission(inode, mask, flags, check_acl)
213 #define ll_generic_permission(inode, mask, flags, check_acl) \
214 generic_permission(inode, mask, check_acl)
217 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
218 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
219 #define ll_call_writepage(inode, page) \
220 (inode)->i_mapping->a_ops->writepage(page, NULL)
221 #define ll_invalidate_inode_pages(inode) \
222 invalidate_inode_pages((inode)->i_mapping)
224 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
225 #define ll_dev_t dev_t
227 #define to_kdev_t(dev) (dev)
228 #define kdev_t_to_nr(dev) (dev)
229 #define val_to_kdev(dev) (dev)
231 #ifdef HAVE_BLKDEV_PUT_2ARGS
232 #define ll_blkdev_put(a, b) blkdev_put(a, b)
234 #define ll_blkdev_put(a, b) blkdev_put(a)
237 #ifdef HAVE_DENTRY_OPEN_4ARGS
238 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
240 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
243 #include <linux/writeback.h>
245 static inline int cfs_cleanup_group_info(void)
247 struct group_info *ginfo;
249 ginfo = groups_alloc(0);
253 set_current_groups(ginfo);
254 put_group_info(ginfo);
259 #define __set_page_ll_data(page, llap) \
261 page_cache_get(page); \
262 SetPagePrivate(page); \
263 set_page_private(page, (unsigned long)llap); \
265 #define __clear_page_ll_data(page) \
267 ClearPagePrivate(page); \
268 set_page_private(page, 0); \
269 page_cache_release(page); \
274 #include <linux/proc_fs.h>
276 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH)
277 #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock)
278 extern void __d_rehash(struct dentry *dentry, int lock);
281 #ifdef HAVE_CAN_SLEEP_ARG
282 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
283 flock_lock_file_wait(file, lock, can_sleep)
285 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
286 flock_lock_file_wait(file, lock)
289 #define CheckWriteback(page, cmd) \
290 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
291 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
293 #ifdef HAVE_PAGE_LIST
294 static inline int mapping_has_pages(struct address_space *mapping)
298 ll_pgcache_lock(mapping);
299 if (cfs_list_empty(&mapping->dirty_pages) &&
300 cfs_list_empty(&mapping->clean_pages) &&
301 cfs_list_empty(&mapping->locked_pages)) {
304 ll_pgcache_unlock(mapping);
309 static inline int mapping_has_pages(struct address_space *mapping)
311 return mapping->nrpages > 0;
315 #ifdef HAVE_KIOBUF_KIO_BLOCKS
316 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
318 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
321 #ifdef HAVE_SECURITY_PLUG
322 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
323 vfs_symlink(dir, dentry, mnt, path, mode)
325 #ifdef HAVE_4ARGS_VFS_SYMLINK
326 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
327 vfs_symlink(dir, dentry, path, mode)
329 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
330 vfs_symlink(dir, dentry, path)
333 #define ll_set_dflags(dentry, flags) do { \
334 cfs_spin_lock(&dentry->d_lock); \
335 dentry->d_flags |= flags; \
336 cfs_spin_unlock(&dentry->d_lock); \
341 #define container_of(ptr, type, member) ({ \
342 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
343 (type *)( (char *)__mptr - offsetof(type,member) );})
346 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
347 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
348 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
350 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
351 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
352 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
354 #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP
355 #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y))
358 #include <linux/mpage.h> /* for generic_writepages */
359 #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
360 #include <linux/backing-dev.h> /* for mapping->backing_dev_info */
361 static inline int filemap_fdatawrite_range(struct address_space *mapping,
362 loff_t start, loff_t end)
365 struct writeback_control wbc = {
366 .sync_mode = WB_SYNC_ALL,
367 .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
370 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
371 wbc.range_start = start;
378 #ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
379 if (!mapping_cap_writeback_dirty(mapping))
382 if (mapping->backing_dev_info->memory_backed)
385 /* do_writepages() */
386 else if (mapping->a_ops->writepages)
387 rc = mapping->a_ops->writepages(mapping, &wbc);
389 rc = generic_writepages(mapping, &wbc);
393 int filemap_fdatawrite_range(struct address_space *mapping,
394 loff_t start, loff_t end);
395 #endif /* HAVE_FILEMAP_FDATAWRITE_RANGE */
397 #ifdef HAVE_VFS_KERN_MOUNT
398 static inline struct vfsmount *
399 ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
401 struct file_system_type *type = get_fs_type(fstype);
402 struct vfsmount *mnt;
404 return ERR_PTR(-ENODEV);
405 mnt = vfs_kern_mount(type, flags, name, data);
406 cfs_module_put(type->owner);
410 #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
413 #ifndef HAVE_ATOMIC_MNT_COUNT
414 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
417 unsigned int count = 0;
420 for_each_possible_cpu(cpu) {
421 count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
426 return mnt->mnt_count;
430 # define mnt_get_count(mnt) cfs_atomic_read(&mnt->mnt_count)
433 #ifdef HAVE_STATFS_DENTRY_PARAM
434 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
436 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
439 #ifndef HAVE_SB_TIME_GRAN
440 #ifndef HAVE_S_TIME_GRAN
441 #error Need s_time_gran patch!
443 static inline u32 get_sb_time_gran(struct super_block *sb)
445 return sb->s_time_gran;
449 #ifdef HAVE_RW_TREE_LOCK
450 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
451 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
453 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
454 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
457 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
458 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
461 int ll_unregister_blkdev(unsigned int dev, const char *name)
463 unregister_blkdev(dev, name);
468 #ifdef HAVE_INVALIDATE_BDEV_2ARG
469 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
471 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
474 #ifdef HAVE_INODE_BLKSIZE
475 #define ll_inode_blksize(a) (a)->i_blksize
477 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
480 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
481 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
483 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
486 #ifndef HAVE_D_OBTAIN_ALIAS
487 /* The old d_alloc_anon() didn't free the inode reference on error
488 * like d_obtain_alias(). Hide that difference/inconvenience here. */
489 static inline struct dentry *d_obtain_alias(struct inode *inode)
491 struct dentry *anon = d_alloc_anon(inode);
495 anon = ERR_PTR(-ENOMEM);
502 /* add a lustre compatible layer for crypto API */
503 #include <linux/crypto.h>
504 #ifdef HAVE_ASYNC_BLOCK_CIPHER
505 #define ll_crypto_hash crypto_hash
506 #define ll_crypto_cipher crypto_blkcipher
507 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
508 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
509 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
510 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
511 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
512 #define ll_crypto_alloc_blkcipher(name, type, mask) \
513 crypto_alloc_blkcipher(name ,type, mask)
514 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
515 crypto_blkcipher_setkey(tfm, key, keylen)
516 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
517 crypto_blkcipher_set_iv(tfm, src, len)
518 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
519 crypto_blkcipher_get_iv(tfm, dst, len)
520 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
521 crypto_blkcipher_encrypt(desc, dst, src, bytes)
522 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
523 crypto_blkcipher_decrypt(desc, dst, src, bytes)
524 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
525 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
526 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
527 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
529 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
530 u8 *key, unsigned int *keylen,
531 struct scatterlist *sg,
532 unsigned int size, u8 *result)
534 struct hash_desc desc;
538 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
540 CERROR("failed to hash setkey: %d\n", rv);
543 return crypto_hash_digest(&desc, sg, size, result);
546 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
548 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
551 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
553 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
556 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
557 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
558 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
559 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
560 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
561 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
562 #else /* HAVE_ASYNC_BLOCK_CIPHER */
563 #include <linux/scatterlist.h>
564 #define ll_crypto_hash crypto_tfm
565 #define ll_crypto_cipher crypto_tfm
566 #ifndef HAVE_STRUCT_HASH_DESC
568 struct ll_crypto_hash *tfm;
572 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
573 struct blkcipher_desc {
574 struct ll_crypto_cipher *tfm;
579 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
580 crypto_cipher_setkey(tfm, key, keylen)
581 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
582 crypto_cipher_set_iv(tfm, src, len)
583 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
584 crypto_cipher_get_iv(tfm, dst, len)
585 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
586 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
587 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
588 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
589 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
590 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
591 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
592 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
595 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
598 char buf[CRYPTO_MAX_ALG_NAME + 1];
599 const char *pan = algname;
602 if (strncmp("cbc(", algname, 4) == 0)
603 flag |= CRYPTO_TFM_MODE_CBC;
604 else if (strncmp("ecb(", algname, 4) == 0)
605 flag |= CRYPTO_TFM_MODE_ECB;
607 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
609 memcpy(buf, algname + 4, vp - algname - 4);
610 buf[vp - algname - 4] = '\0';
616 return crypto_alloc_tfm(pan, flag);
620 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
622 char buf[CRYPTO_MAX_ALG_NAME + 1];
623 const char *pan = alg;
625 if (strncmp("hmac(", alg, 5) == 0) {
626 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
628 memcpy(buf, alg+ 5, vp - alg- 5);
629 buf[vp - alg - 5] = 0x00;
633 return crypto_alloc_tfm(pan, 0);
635 static inline int ll_crypto_hash_init(struct hash_desc *desc)
637 crypto_digest_init(desc->tfm); return 0;
639 static inline int ll_crypto_hash_update(struct hash_desc *desc,
640 struct scatterlist *sg,
643 struct scatterlist *sl = sg;
646 * This way is very weakness. We must ensure that
647 * the sum of sg[0..i]->length isn't greater than nbytes.
648 * In the upstream kernel the crypto_hash_update() also
649 * via the nbytes computed the count of sg[...].
650 * The old style is more safely. but it gone.
652 for (count = 0; nbytes > 0; count ++, sl ++) {
653 nbytes -= sl->length;
655 crypto_digest_update(desc->tfm, sg, count); return 0;
657 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
659 crypto_digest_final(desc->tfm, out); return 0;
661 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
662 u8 *key, unsigned int *keylen,
663 struct scatterlist *sg,
667 struct scatterlist *sl = sg;
669 for (count = 0; nbytes > 0; count ++, sl ++) {
670 nbytes -= sl->length;
672 crypto_hmac(tfm, key, keylen, sg, count, out);
676 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
677 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
678 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
679 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
680 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
681 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
682 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
683 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
684 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
685 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
687 #ifndef HAVE_SYNCHRONIZE_RCU
688 /* Linux 2.6.32 provides define when !CONFIG_TREE_PREEMPT_RCU */
689 #ifndef synchronize_rcu
690 #define synchronize_rcu() synchronize_kernel()
694 #ifdef HAVE_FILE_REMOVE_SUID
695 # define ll_remove_suid(file, mnt) file_remove_suid(file)
697 # ifdef HAVE_SECURITY_PLUG
698 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
700 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
704 #ifdef HAVE_SECURITY_PLUG
705 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
706 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
707 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
708 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
709 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
710 vfs_mknod(dir,entry,mnt,mode,dev)
711 #define ll_security_inode_unlink(dir,entry,mnt) \
712 security_inode_unlink(dir,entry,mnt)
713 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
714 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
716 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
717 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
718 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
719 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
720 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
721 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
722 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
723 vfs_rename(old,old_dir,new,new_dir)
724 #endif /* HAVE_SECURITY_PLUG */
726 #ifdef for_each_possible_cpu
727 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
728 #elif defined(for_each_cpu)
729 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
732 #ifdef HAVE_BIO_ENDIO_2ARG
733 #define cfs_bio_io_error(a,b) bio_io_error((a))
734 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
736 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
737 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
740 #ifdef HAVE_FS_STRUCT_USE_PATH
741 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
742 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
743 #define cfs_path_put(nd) path_put(&(nd)->path)
745 #define cfs_fs_pwd(fs) ((fs)->pwd)
746 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
747 #define cfs_path_put(nd) path_release(nd)
751 static inline int abs(int x)
753 return (x < 0) ? -x : x;
758 static inline long labs(long x)
760 return (x < 0) ? -x : x;
762 #endif /* HAVE_REGISTER_SHRINKER */
764 #ifdef HAVE_INVALIDATE_INODE_PAGES
765 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
768 #ifdef HAVE_INODE_IPRIVATE
769 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
771 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
774 #ifndef SLAB_DESTROY_BY_RCU
775 #define CFS_SLAB_DESTROY_BY_RCU 0
777 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
780 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
781 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
783 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
786 #ifdef DQUOT_USAGE_ENABLED
787 #define ll_sb_any_quota_active(sb) sb_any_quota_loaded(sb)
788 #elif defined(HAVE_SB_ANY_QUOTA_ACTIVE)
789 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
791 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
795 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
799 if (sb->s_qcop->quota_on) {
800 #ifdef HAVE_QUOTA_ON_USE_PATH
803 rc = kern_path(name, LOOKUP_FOLLOW, &path);
807 rc = sb->s_qcop->quota_on(sb, off, ver
808 #ifdef HAVE_QUOTA_ON_USE_PATH
813 #ifdef HAVE_QUOTA_ON_5ARGS
817 #ifdef HAVE_QUOTA_ON_USE_PATH
826 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
828 if (sb->s_qcop->quota_off) {
829 return sb->s_qcop->quota_off(sb, off
830 #ifdef HAVE_QUOTA_OFF_3ARGS
839 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
840 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
843 #ifndef HAVE_VFS_DQ_OFF
844 # define ll_vfs_dq_init DQUOT_INIT
845 # define ll_vfs_dq_drop DQUOT_DROP
846 # define ll_vfs_dq_transfer DQUOT_TRANSFER
847 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
849 # define ll_vfs_dq_init vfs_dq_init
850 # define ll_vfs_dq_drop vfs_dq_drop
851 # define ll_vfs_dq_transfer vfs_dq_transfer
852 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
856 #define ll_bdi_init(bdi) bdi_init(bdi)
857 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
859 #define ll_bdi_init(bdi) 0
860 #define ll_bdi_destroy(bdi) do { } while(0)
863 #ifdef HAVE_NEW_BACKING_DEV_INFO
864 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
866 # define ll_bdi_wb_cnt(bdi) 1
869 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
870 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
873 #ifndef HAVE_BLKDEV_GET_BY_DEV
874 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
877 #ifndef HAVE_REQUEST_QUEUE_LIMITS
878 #define queue_max_sectors(rq) ((rq)->max_sectors)
879 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
880 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
881 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
884 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
885 #define blk_queue_max_segments(rq, seg) \
886 do { blk_queue_max_phys_segments(rq, seg); \
887 blk_queue_max_hw_segments(rq, seg); } while (0)
889 #define queue_max_phys_segments(rq) queue_max_segments(rq)
890 #define queue_max_hw_segments(rq) queue_max_segments(rq)
894 #ifndef HAVE_BI_HW_SEGMENTS
895 #define bio_hw_segments(q, bio) 0
898 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
899 #define pagevec_lru_add_file pagevec_lru_add
902 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
903 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
904 add_to_page_cache_lru(pg, mapping, off, gfp)
905 #define ll_pagevec_init(pv, cold) do {} while (0)
906 #define ll_pagevec_add(pv, pg) (0)
907 #define ll_pagevec_lru_add_file(pv) do {} while (0)
909 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
910 add_to_page_cache(pg, mapping, off, gfp)
911 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
912 #define ll_pagevec_add(pv, pg) pagevec_add(pv, pg)
913 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
916 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
917 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
918 #define HAVE_NODE_TO_CPUMASK
925 # define NO_QUOTA (-EDQUOT)
928 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
929 # define ext2_set_bit __test_and_set_bit_le
930 # define ext2_clear_bit __test_and_clear_bit_le
931 # define ext2_test_bit test_bit_le
932 # define ext2_find_first_zero_bit find_first_zero_bit_le
933 # define ext2_find_next_zero_bit find_next_zero_bit_le
936 #endif /* __KERNEL__ */
937 #endif /* _COMPAT25_H */