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 * 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 <libcfs/linux/portals_compat25.h>
49 #include <linux/lustre_patchless_compat.h>
51 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
54 unsigned int ia_attr_flags;
57 #define ll_iattr iattr
58 #endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14) */
60 #ifdef HAVE_FS_STRUCT_USE_PATH
61 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
62 struct dentry *dentry)
69 write_lock(&fs->lock);
73 write_unlock(&fs->lock);
81 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
82 struct dentry *dentry)
84 struct dentry *old_pwd;
85 struct vfsmount *old_pwdmnt;
87 cfs_write_lock(&fs->lock);
89 old_pwdmnt = fs->pwdmnt;
90 fs->pwdmnt = mntget(mnt);
91 fs->pwd = dget(dentry);
92 cfs_write_unlock(&fs->lock);
102 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
103 * ATTR_* attributes (see bug 13828)
105 #define ATTR_BLOCKS (1 << 27)
107 #if HAVE_INODE_I_MUTEX
108 #define UNLOCK_INODE_MUTEX(inode) \
109 do {cfs_mutex_unlock(&(inode)->i_mutex); } while(0)
110 #define LOCK_INODE_MUTEX(inode) \
111 do {cfs_mutex_lock(&(inode)->i_mutex); } while(0)
112 #define LOCK_INODE_MUTEX_PARENT(inode) \
113 do {cfs_mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
114 #define TRYLOCK_INODE_MUTEX(inode) cfs_mutex_trylock(&(inode)->i_mutex)
116 #define UNLOCK_INODE_MUTEX(inode) do cfs_up(&(inode)->i_sem); } while(0)
117 #define LOCK_INODE_MUTEX(inode) do cfs_down(&(inode)->i_sem); } while(0)
118 #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
119 #define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
120 #endif /* HAVE_INODE_I_MUTEX */
123 #define LL_SEQ_LOCK(seq) cfs_mutex_lock(&(seq)->lock)
124 #define LL_SEQ_UNLOCK(seq) cfs_mutex_unlock(&(seq)->lock)
126 #define LL_SEQ_LOCK(seq) cfs_down(&(seq)->sem)
127 #define LL_SEQ_UNLOCK(seq) cfs_up(&(seq)->sem)
130 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
131 #define d_child d_u.d_child
132 #define d_rcu d_u.d_rcu
135 #ifdef HAVE_DQUOTOFF_MUTEX
136 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_unlock(&(dqopt)->dqonoff_mutex)
137 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_lock(&(dqopt)->dqonoff_mutex)
139 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_up(&(dqopt)->dqonoff_sem)
140 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_down(&(dqopt)->dqonoff_sem)
141 #endif /* HAVE_DQUOTOFF_MUTEX */
143 #define current_ngroups current_cred()->group_info->ngroups
144 #define current_groups current_cred()->group_info->small_block
147 #define page_private(page) ((page)->private)
148 #define set_page_private(page, v) ((page)->private = (v))
155 #define lock_dentry(___dentry) cfs_spin_lock(&(___dentry)->d_lock)
156 #define unlock_dentry(___dentry) cfs_spin_unlock(&(___dentry)->d_lock)
158 #define ll_kernel_locked() kernel_locked()
161 * OBD need working random driver, thus all our
162 * initialization routines must be called after device
163 * driver initialization
167 #define module_init(a) late_initcall(a)
170 /* XXX our code should be using the 2.6 calls, not the other way around */
171 #ifdef HAVE_TRYLOCK_PAGE
172 #define TestSetPageLocked(page) (!trylock_page(page))
175 #define Page_Uptodate(page) PageUptodate(page)
176 #define ll_redirty_page(page) set_page_dirty(page)
178 #define KDEVT_INIT(val) (val)
180 #define LTIME_S(time) (time.tv_sec)
181 #define ll_path_lookup path_lookup
183 #ifdef HAVE_EXPORT_INODE_PERMISSION
184 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
186 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
189 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
190 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
191 #define ll_call_writepage(inode, page) \
192 (inode)->i_mapping->a_ops->writepage(page, NULL)
193 #define ll_invalidate_inode_pages(inode) \
194 invalidate_inode_pages((inode)->i_mapping)
195 #define ll_truncate_complete_page(page) \
196 truncate_complete_page(page->mapping, page)
198 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
199 #define ll_dev_t dev_t
201 #define to_kdev_t(dev) (dev)
202 #define kdev_t_to_nr(dev) (dev)
203 #define val_to_kdev(dev) (dev)
205 #ifdef HAVE_BLKDEV_PUT_2ARGS
206 #define ll_blkdev_put(a, b) blkdev_put(a, b)
208 #define ll_blkdev_put(a, b) blkdev_put(a)
211 #ifdef HAVE_DENTRY_OPEN_4ARGS
212 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
214 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
217 #include <linux/writeback.h>
219 static inline int cfs_cleanup_group_info(void)
221 struct group_info *ginfo;
223 ginfo = groups_alloc(0);
227 set_current_groups(ginfo);
228 put_group_info(ginfo);
233 #define __set_page_ll_data(page, llap) \
235 page_cache_get(page); \
236 SetPagePrivate(page); \
237 set_page_private(page, (unsigned long)llap); \
239 #define __clear_page_ll_data(page) \
241 ClearPagePrivate(page); \
242 set_page_private(page, 0); \
243 page_cache_release(page); \
248 #include <linux/proc_fs.h>
250 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH)
251 #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock)
252 extern void __d_rehash(struct dentry *dentry, int lock);
255 #if !defined(HAVE_D_MOVE_LOCKED) && defined(HAVE___D_MOVE)
256 #define d_move_locked(dentry, target) __d_move(dentry, target)
257 extern void __d_move(struct dentry *dentry, struct dentry *target);
260 #ifdef HAVE_CAN_SLEEP_ARG
261 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
262 flock_lock_file_wait(file, lock, can_sleep)
264 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
265 flock_lock_file_wait(file, lock)
268 #define CheckWriteback(page, cmd) \
269 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
270 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
272 #ifdef HAVE_PAGE_LIST
273 static inline int mapping_has_pages(struct address_space *mapping)
277 ll_pgcache_lock(mapping);
278 if (cfs_list_empty(&mapping->dirty_pages) &&
279 cfs_list_empty(&mapping->clean_pages) &&
280 cfs_list_empty(&mapping->locked_pages)) {
283 ll_pgcache_unlock(mapping);
288 static inline int mapping_has_pages(struct address_space *mapping)
290 return mapping->nrpages > 0;
294 #ifdef HAVE_KIOBUF_KIO_BLOCKS
295 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
297 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
300 #ifdef HAVE_SECURITY_PLUG
301 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
302 vfs_symlink(dir, dentry, mnt, path, mode)
304 #ifdef HAVE_4ARGS_VFS_SYMLINK
305 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
306 vfs_symlink(dir, dentry, path, mode)
308 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
309 vfs_symlink(dir, dentry, path)
312 #define ll_set_dflags(dentry, flags) do { \
313 cfs_spin_lock(&dentry->d_lock); \
314 dentry->d_flags |= flags; \
315 cfs_spin_unlock(&dentry->d_lock); \
320 #define container_of(ptr, type, member) ({ \
321 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
322 (type *)( (char *)__mptr - offsetof(type,member) );})
325 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
326 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
327 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
329 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
330 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
331 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
333 #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP
334 #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y))
337 #include <linux/mpage.h> /* for generic_writepages */
338 #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
339 #include <linux/backing-dev.h> /* for mapping->backing_dev_info */
340 static inline int filemap_fdatawrite_range(struct address_space *mapping,
341 loff_t start, loff_t end)
344 struct writeback_control wbc = {
345 .sync_mode = WB_SYNC_ALL,
346 .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
349 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
350 wbc.range_start = start;
357 #ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
358 if (!mapping_cap_writeback_dirty(mapping))
361 if (mapping->backing_dev_info->memory_backed)
364 /* do_writepages() */
365 else if (mapping->a_ops->writepages)
366 rc = mapping->a_ops->writepages(mapping, &wbc);
368 rc = generic_writepages(mapping, &wbc);
372 int filemap_fdatawrite_range(struct address_space *mapping,
373 loff_t start, loff_t end);
374 #endif /* HAVE_FILEMAP_FDATAWRITE_RANGE */
376 #ifdef HAVE_VFS_KERN_MOUNT
377 static inline struct vfsmount *
378 ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
380 struct file_system_type *type = get_fs_type(fstype);
381 struct vfsmount *mnt;
383 return ERR_PTR(-ENODEV);
384 mnt = vfs_kern_mount(type, flags, name, data);
385 cfs_module_put(type->owner);
389 #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
392 #ifdef HAVE_STATFS_DENTRY_PARAM
393 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
395 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
398 #ifndef HAVE_SB_TIME_GRAN
399 #ifndef HAVE_S_TIME_GRAN
400 #error Need s_time_gran patch!
402 static inline u32 get_sb_time_gran(struct super_block *sb)
404 return sb->s_time_gran;
408 #ifdef HAVE_RW_TREE_LOCK
409 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
410 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
412 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
413 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
416 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
417 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
420 int ll_unregister_blkdev(unsigned int dev, const char *name)
422 unregister_blkdev(dev, name);
427 #ifdef HAVE_INVALIDATE_BDEV_2ARG
428 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
430 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
433 #ifdef HAVE_INODE_BLKSIZE
434 #define ll_inode_blksize(a) (a)->i_blksize
436 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
439 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
440 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
442 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
445 #ifndef HAVE_D_OBTAIN_ALIAS
446 /* The old d_alloc_anon() didn't free the inode reference on error
447 * like d_obtain_alias(). Hide that difference/inconvenience here. */
448 static inline struct dentry *d_obtain_alias(struct inode *inode)
450 struct dentry *anon = d_alloc_anon(inode);
459 /* add a lustre compatible layer for crypto API */
460 #include <linux/crypto.h>
461 #ifdef HAVE_ASYNC_BLOCK_CIPHER
462 #define ll_crypto_hash crypto_hash
463 #define ll_crypto_cipher crypto_blkcipher
464 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
465 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
466 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
467 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
468 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
469 #define ll_crypto_alloc_blkcipher(name, type, mask) \
470 crypto_alloc_blkcipher(name ,type, mask)
471 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
472 crypto_blkcipher_setkey(tfm, key, keylen)
473 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
474 crypto_blkcipher_set_iv(tfm, src, len)
475 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
476 crypto_blkcipher_get_iv(tfm, dst, len)
477 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
478 crypto_blkcipher_encrypt(desc, dst, src, bytes)
479 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
480 crypto_blkcipher_decrypt(desc, dst, src, bytes)
481 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
482 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
483 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
484 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
486 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
487 u8 *key, unsigned int *keylen,
488 struct scatterlist *sg,
489 unsigned int size, u8 *result)
491 struct hash_desc desc;
495 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
497 CERROR("failed to hash setkey: %d\n", rv);
500 return crypto_hash_digest(&desc, sg, size, result);
503 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
505 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
508 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
510 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
513 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
514 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
515 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
516 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
517 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
518 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
519 #else /* HAVE_ASYNC_BLOCK_CIPHER */
520 #include <linux/scatterlist.h>
521 #define ll_crypto_hash crypto_tfm
522 #define ll_crypto_cipher crypto_tfm
523 #ifndef HAVE_STRUCT_HASH_DESC
525 struct ll_crypto_hash *tfm;
529 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
530 struct blkcipher_desc {
531 struct ll_crypto_cipher *tfm;
536 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
537 crypto_cipher_setkey(tfm, key, keylen)
538 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
539 crypto_cipher_set_iv(tfm, src, len)
540 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
541 crypto_cipher_get_iv(tfm, dst, len)
542 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
543 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
544 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
545 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
546 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
547 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
548 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
549 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
552 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
555 char buf[CRYPTO_MAX_ALG_NAME + 1];
556 const char *pan = algname;
559 if (strncmp("cbc(", algname, 4) == 0)
560 flag |= CRYPTO_TFM_MODE_CBC;
561 else if (strncmp("ecb(", algname, 4) == 0)
562 flag |= CRYPTO_TFM_MODE_ECB;
564 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
566 memcpy(buf, algname + 4, vp - algname - 4);
567 buf[vp - algname - 4] = '\0';
573 return crypto_alloc_tfm(pan, flag);
577 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
579 char buf[CRYPTO_MAX_ALG_NAME + 1];
580 const char *pan = alg;
582 if (strncmp("hmac(", alg, 5) == 0) {
583 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
585 memcpy(buf, alg+ 5, vp - alg- 5);
586 buf[vp - alg - 5] = 0x00;
590 return crypto_alloc_tfm(pan, 0);
592 static inline int ll_crypto_hash_init(struct hash_desc *desc)
594 crypto_digest_init(desc->tfm); return 0;
596 static inline int ll_crypto_hash_update(struct hash_desc *desc,
597 struct scatterlist *sg,
600 struct scatterlist *sl = sg;
603 * This way is very weakness. We must ensure that
604 * the sum of sg[0..i]->length isn't greater than nbytes.
605 * In the upstream kernel the crypto_hash_update() also
606 * via the nbytes computed the count of sg[...].
607 * The old style is more safely. but it gone.
609 for (count = 0; nbytes > 0; count ++, sl ++) {
610 nbytes -= sl->length;
612 crypto_digest_update(desc->tfm, sg, count); return 0;
614 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
616 crypto_digest_final(desc->tfm, out); return 0;
618 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
619 u8 *key, unsigned int *keylen,
620 struct scatterlist *sg,
624 struct scatterlist *sl = sg;
626 for (count = 0; nbytes > 0; count ++, sl ++) {
627 nbytes -= sl->length;
629 crypto_hmac(tfm, key, keylen, sg, count, out);
633 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
634 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
635 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
636 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
637 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
638 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
639 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
640 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
641 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
642 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
644 #ifndef HAVE_SYNCHRONIZE_RCU
645 /* Linux 2.6.32 provides define when !CONFIG_TREE_PREEMPT_RCU */
646 #ifndef synchronize_rcu
647 #define synchronize_rcu() synchronize_kernel()
651 #ifdef HAVE_FILE_REMOVE_SUID
652 # define ll_remove_suid(file, mnt) file_remove_suid(file)
654 # ifdef HAVE_SECURITY_PLUG
655 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
657 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
661 #ifdef HAVE_SECURITY_PLUG
662 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
663 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
664 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
665 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
666 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
667 vfs_mknod(dir,entry,mnt,mode,dev)
668 #define ll_security_inode_unlink(dir,entry,mnt) \
669 security_inode_unlink(dir,entry,mnt)
670 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
671 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
673 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
674 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
675 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
676 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
677 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
678 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
679 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
680 vfs_rename(old,old_dir,new,new_dir)
681 #endif /* HAVE_SECURITY_PLUG */
683 #ifdef for_each_possible_cpu
684 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
685 #elif defined(for_each_cpu)
686 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
690 #define cpu_to_node(cpu) 0
693 #ifdef HAVE_REGISTER_SHRINKER
694 typedef int (*cfs_shrinker_t)(int nr_to_scan, gfp_t gfp_mask);
697 struct shrinker *cfs_set_shrinker(int seek, cfs_shrinker_t func)
701 s = kmalloc(sizeof(*s), GFP_KERNEL);
708 register_shrinker(s);
714 void cfs_remove_shrinker(struct shrinker *shrinker)
716 if (shrinker == NULL)
719 unregister_shrinker(shrinker);
724 #ifdef HAVE_BIO_ENDIO_2ARG
725 #define cfs_bio_io_error(a,b) bio_io_error((a))
726 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
728 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
729 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
732 #ifdef HAVE_FS_STRUCT_USE_PATH
733 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
734 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
735 #define cfs_path_put(nd) path_put(&(nd)->path)
737 #define cfs_fs_pwd(fs) ((fs)->pwd)
738 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
739 #define cfs_path_put(nd) path_release(nd)
743 static inline int abs(int x)
745 return (x < 0) ? -x : x;
750 static inline long labs(long x)
752 return (x < 0) ? -x : x;
754 #endif /* HAVE_REGISTER_SHRINKER */
756 #ifdef HAVE_INVALIDATE_INODE_PAGES
757 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
760 #ifdef HAVE_INODE_IPRIVATE
761 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
763 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
766 #ifndef SLAB_DESTROY_BY_RCU
767 #define CFS_SLAB_DESTROY_BY_RCU 0
769 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
772 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
773 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
775 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
778 #ifdef HAVE_SB_ANY_QUOTA_ACTIVE
779 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
781 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
785 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
787 if (sb->s_qcop->quota_on) {
788 return sb->s_qcop->quota_on(sb, off, ver, name
789 #ifdef HAVE_QUOTA_ON_5ARGS
798 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
800 if (sb->s_qcop->quota_off) {
801 return sb->s_qcop->quota_off(sb, off
802 #ifdef HAVE_QUOTA_OFF_3ARGS
811 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
812 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
815 #ifndef HAVE_VFS_DQ_OFF
816 # define ll_vfs_dq_init DQUOT_INIT
817 # define ll_vfs_dq_drop DQUOT_DROP
818 # define ll_vfs_dq_transfer DQUOT_TRANSFER
819 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
821 # define ll_vfs_dq_init vfs_dq_init
822 # define ll_vfs_dq_drop vfs_dq_drop
823 # define ll_vfs_dq_transfer vfs_dq_transfer
824 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
828 #define ll_bdi_init(bdi) bdi_init(bdi)
829 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
831 #define ll_bdi_init(bdi) 0
832 #define ll_bdi_destroy(bdi) do { } while(0)
835 #ifdef HAVE_NEW_BACKING_DEV_INFO
836 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
838 # define ll_bdi_wb_cnt(bdi) 1
841 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
842 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
845 #ifndef HAVE_REQUEST_QUEUE_LIMITS
846 #define queue_max_sectors(rq) ((rq)->max_sectors)
847 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
848 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
849 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
852 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
853 #define blk_queue_max_segments(rq, seg) \
854 do { blk_queue_max_phys_segments(rq, seg); \
855 blk_queue_max_hw_segments(rq, seg); } while (0)
857 #define queue_max_phys_segments(rq) queue_max_segments(rq)
858 #define queue_max_hw_segments(rq) queue_max_segments(rq)
862 #ifndef HAVE_BI_HW_SEGMENTS
863 #define bio_hw_segments(q, bio) 0
866 #endif /* __KERNEL__ */
867 #endif /* _COMPAT25_H */