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
182 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
184 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
185 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
186 #define ll_call_writepage(inode, page) \
187 (inode)->i_mapping->a_ops->writepage(page, NULL)
188 #define ll_invalidate_inode_pages(inode) \
189 invalidate_inode_pages((inode)->i_mapping)
190 #define ll_truncate_complete_page(page) \
191 truncate_complete_page(page->mapping, page)
193 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
194 #define ll_dev_t dev_t
196 #define to_kdev_t(dev) (dev)
197 #define kdev_t_to_nr(dev) (dev)
198 #define val_to_kdev(dev) (dev)
200 #ifdef HAVE_BLKDEV_PUT_2ARGS
201 #define ll_blkdev_put(a, b) blkdev_put(a, b)
203 #define ll_blkdev_put(a, b) blkdev_put(a)
206 #ifdef HAVE_DENTRY_OPEN_4ARGS
207 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
209 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
212 #include <linux/writeback.h>
214 static inline int cfs_cleanup_group_info(void)
216 struct group_info *ginfo;
218 ginfo = groups_alloc(0);
222 set_current_groups(ginfo);
223 put_group_info(ginfo);
228 #define __set_page_ll_data(page, llap) \
230 page_cache_get(page); \
231 SetPagePrivate(page); \
232 set_page_private(page, (unsigned long)llap); \
234 #define __clear_page_ll_data(page) \
236 ClearPagePrivate(page); \
237 set_page_private(page, 0); \
238 page_cache_release(page); \
243 #include <linux/proc_fs.h>
245 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH)
246 #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock)
247 extern void __d_rehash(struct dentry *dentry, int lock);
250 #if !defined(HAVE_D_MOVE_LOCKED) && defined(HAVE___D_MOVE)
251 #define d_move_locked(dentry, target) __d_move(dentry, target)
252 extern void __d_move(struct dentry *dentry, struct dentry *target);
255 #ifdef HAVE_CAN_SLEEP_ARG
256 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
257 flock_lock_file_wait(file, lock, can_sleep)
259 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
260 flock_lock_file_wait(file, lock)
263 #define CheckWriteback(page, cmd) \
264 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
265 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
267 #ifdef HAVE_PAGE_LIST
268 static inline int mapping_has_pages(struct address_space *mapping)
272 ll_pgcache_lock(mapping);
273 if (cfs_list_empty(&mapping->dirty_pages) &&
274 cfs_list_empty(&mapping->clean_pages) &&
275 cfs_list_empty(&mapping->locked_pages)) {
278 ll_pgcache_unlock(mapping);
283 static inline int mapping_has_pages(struct address_space *mapping)
285 return mapping->nrpages > 0;
289 #ifdef HAVE_KIOBUF_KIO_BLOCKS
290 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
292 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
295 #ifdef HAVE_SECURITY_PLUG
296 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
297 vfs_symlink(dir, dentry, mnt, path, mode)
299 #ifdef HAVE_4ARGS_VFS_SYMLINK
300 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
301 vfs_symlink(dir, dentry, path, mode)
303 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
304 vfs_symlink(dir, dentry, path)
308 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,7))
309 #define ll_set_dflags(dentry, flags) do { dentry->d_vfs_flags |= flags; } while(0)
311 #define ll_set_dflags(dentry, flags) do { \
312 cfs_spin_lock(&dentry->d_lock); \
313 dentry->d_flags |= flags; \
314 cfs_spin_unlock(&dentry->d_lock); \
319 #define container_of(ptr, type, member) ({ \
320 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
321 (type *)( (char *)__mptr - offsetof(type,member) );})
324 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
325 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
326 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
328 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
329 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
330 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
332 #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP
333 #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y))
336 #include <linux/mpage.h> /* for generic_writepages */
337 #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
338 #include <linux/backing-dev.h> /* for mapping->backing_dev_info */
339 static inline int filemap_fdatawrite_range(struct address_space *mapping,
340 loff_t start, loff_t end)
343 struct writeback_control wbc = {
344 .sync_mode = WB_SYNC_ALL,
345 .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
348 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
349 wbc.range_start = start;
356 #ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
357 if (!mapping_cap_writeback_dirty(mapping))
360 if (mapping->backing_dev_info->memory_backed)
363 /* do_writepages() */
364 else if (mapping->a_ops->writepages)
365 rc = mapping->a_ops->writepages(mapping, &wbc);
367 rc = generic_writepages(mapping, &wbc);
371 int filemap_fdatawrite_range(struct address_space *mapping,
372 loff_t start, loff_t end);
373 #endif /* HAVE_FILEMAP_FDATAWRITE_RANGE */
375 #ifdef HAVE_VFS_KERN_MOUNT
376 static inline struct vfsmount *
377 ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
379 struct file_system_type *type = get_fs_type(fstype);
380 struct vfsmount *mnt;
382 return ERR_PTR(-ENODEV);
383 mnt = vfs_kern_mount(type, flags, name, data);
384 cfs_module_put(type->owner);
388 #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
391 #ifdef HAVE_STATFS_DENTRY_PARAM
392 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
394 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
397 #ifndef HAVE_SB_TIME_GRAN
398 #ifndef HAVE_S_TIME_GRAN
399 #error Need s_time_gran patch!
401 static inline u32 get_sb_time_gran(struct super_block *sb)
403 return sb->s_time_gran;
407 #ifdef HAVE_RW_TREE_LOCK
408 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
409 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
411 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
412 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
415 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
416 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
419 int ll_unregister_blkdev(unsigned int dev, const char *name)
421 unregister_blkdev(dev, name);
426 #ifdef HAVE_INVALIDATE_BDEV_2ARG
427 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
429 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
432 #ifdef HAVE_INODE_BLKSIZE
433 #define ll_inode_blksize(a) (a)->i_blksize
435 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
438 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
439 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
441 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
444 #ifndef HAVE_D_OBTAIN_ALIAS
445 #define d_obtain_alias(inode) d_alloc_anon(inode)
448 /* add a lustre compatible layer for crypto API */
449 #include <linux/crypto.h>
450 #ifdef HAVE_ASYNC_BLOCK_CIPHER
451 #define ll_crypto_hash crypto_hash
452 #define ll_crypto_cipher crypto_blkcipher
453 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
454 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
455 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
456 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
457 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
458 #define ll_crypto_alloc_blkcipher(name, type, mask) \
459 crypto_alloc_blkcipher(name ,type, mask)
460 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
461 crypto_blkcipher_setkey(tfm, key, keylen)
462 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
463 crypto_blkcipher_set_iv(tfm, src, len)
464 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
465 crypto_blkcipher_get_iv(tfm, dst, len)
466 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
467 crypto_blkcipher_encrypt(desc, dst, src, bytes)
468 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
469 crypto_blkcipher_decrypt(desc, dst, src, bytes)
470 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
471 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
472 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
473 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
475 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
476 u8 *key, unsigned int *keylen,
477 struct scatterlist *sg,
478 unsigned int size, u8 *result)
480 struct hash_desc desc;
484 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
486 CERROR("failed to hash setkey: %d\n", rv);
489 return crypto_hash_digest(&desc, sg, size, result);
492 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
494 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
497 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
499 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
502 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
503 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
504 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
505 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
506 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
507 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
508 #else /* HAVE_ASYNC_BLOCK_CIPHER */
509 #include <linux/scatterlist.h>
510 #define ll_crypto_hash crypto_tfm
511 #define ll_crypto_cipher crypto_tfm
512 #ifndef HAVE_STRUCT_HASH_DESC
514 struct ll_crypto_hash *tfm;
518 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
519 struct blkcipher_desc {
520 struct ll_crypto_cipher *tfm;
525 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
526 crypto_cipher_setkey(tfm, key, keylen)
527 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
528 crypto_cipher_set_iv(tfm, src, len)
529 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
530 crypto_cipher_get_iv(tfm, dst, len)
531 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
532 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
533 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
534 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
535 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
536 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
537 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
538 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
541 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
544 char buf[CRYPTO_MAX_ALG_NAME + 1];
545 const char *pan = algname;
548 if (strncmp("cbc(", algname, 4) == 0)
549 flag |= CRYPTO_TFM_MODE_CBC;
550 else if (strncmp("ecb(", algname, 4) == 0)
551 flag |= CRYPTO_TFM_MODE_ECB;
553 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
555 memcpy(buf, algname + 4, vp - algname - 4);
556 buf[vp - algname - 4] = '\0';
562 return crypto_alloc_tfm(pan, flag);
566 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
568 char buf[CRYPTO_MAX_ALG_NAME + 1];
569 const char *pan = alg;
571 if (strncmp("hmac(", alg, 5) == 0) {
572 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
574 memcpy(buf, alg+ 5, vp - alg- 5);
575 buf[vp - alg - 5] = 0x00;
579 return crypto_alloc_tfm(pan, 0);
581 static inline int ll_crypto_hash_init(struct hash_desc *desc)
583 crypto_digest_init(desc->tfm); return 0;
585 static inline int ll_crypto_hash_update(struct hash_desc *desc,
586 struct scatterlist *sg,
589 struct scatterlist *sl = sg;
592 * This way is very weakness. We must ensure that
593 * the sum of sg[0..i]->length isn't greater than nbytes.
594 * In the upstream kernel the crypto_hash_update() also
595 * via the nbytes computed the count of sg[...].
596 * The old style is more safely. but it gone.
598 for (count = 0; nbytes > 0; count ++, sl ++) {
599 nbytes -= sl->length;
601 crypto_digest_update(desc->tfm, sg, count); return 0;
603 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
605 crypto_digest_final(desc->tfm, out); return 0;
607 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
608 u8 *key, unsigned int *keylen,
609 struct scatterlist *sg,
613 struct scatterlist *sl = sg;
615 for (count = 0; nbytes > 0; count ++, sl ++) {
616 nbytes -= sl->length;
618 crypto_hmac(tfm, key, keylen, sg, count, out);
622 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
623 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
624 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
625 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
626 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
627 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
628 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
629 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
630 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
631 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
633 #ifndef HAVE_SYNCHRONIZE_RCU
634 #define synchronize_rcu() synchronize_kernel()
637 #ifdef HAVE_FILE_REMOVE_SUID
638 # define ll_remove_suid(file, mnt) file_remove_suid(file)
640 # ifdef HAVE_SECURITY_PLUG
641 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
643 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
647 #ifdef HAVE_SECURITY_PLUG
648 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
649 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
650 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
651 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
652 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
653 vfs_mknod(dir,entry,mnt,mode,dev)
654 #define ll_security_inode_unlink(dir,entry,mnt) \
655 security_inode_unlink(dir,entry,mnt)
656 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
657 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
659 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
660 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
661 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
662 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
663 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
664 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
665 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
666 vfs_rename(old,old_dir,new,new_dir)
667 #endif /* HAVE_SECURITY_PLUG */
669 #ifdef for_each_possible_cpu
670 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
671 #elif defined(for_each_cpu)
672 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
676 #define cpu_to_node(cpu) 0
679 #ifdef HAVE_REGISTER_SHRINKER
680 typedef int (*cfs_shrinker_t)(int nr_to_scan, gfp_t gfp_mask);
683 struct shrinker *cfs_set_shrinker(int seek, cfs_shrinker_t func)
687 s = kmalloc(sizeof(*s), GFP_KERNEL);
694 register_shrinker(s);
700 void cfs_remove_shrinker(struct shrinker *shrinker)
702 if (shrinker == NULL)
705 unregister_shrinker(shrinker);
710 #ifdef HAVE_BIO_ENDIO_2ARG
711 #define cfs_bio_io_error(a,b) bio_io_error((a))
712 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
714 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
715 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
718 #ifdef HAVE_FS_STRUCT_USE_PATH
719 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
720 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
721 #define cfs_path_put(nd) path_put(&(nd)->path)
723 #define cfs_fs_pwd(fs) ((fs)->pwd)
724 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
725 #define cfs_path_put(nd) path_release(nd)
729 static inline int abs(int x)
731 return (x < 0) ? -x : x;
736 static inline long labs(long x)
738 return (x < 0) ? -x : x;
740 #endif /* HAVE_REGISTER_SHRINKER */
742 #ifdef HAVE_INVALIDATE_INODE_PAGES
743 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
746 #ifdef HAVE_INODE_IPRIVATE
747 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
749 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
752 #ifndef SLAB_DESTROY_BY_RCU
753 #define CFS_SLAB_DESTROY_BY_RCU 0
755 #define CFS_SLAB_DESTROY_BY_RCU SLAB_DESTROY_BY_RCU
758 #ifdef HAVE_SB_HAS_QUOTA_ACTIVE
759 #define ll_sb_has_quota_active(sb, type) sb_has_quota_active(sb, type)
761 #define ll_sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
764 #ifdef HAVE_SB_ANY_QUOTA_ACTIVE
765 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
767 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
771 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
773 if (sb->s_qcop->quota_on) {
774 return sb->s_qcop->quota_on(sb, off, ver, name
775 #ifdef HAVE_QUOTA_ON_5ARGS
784 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
786 if (sb->s_qcop->quota_off) {
787 return sb->s_qcop->quota_off(sb, off
788 #ifdef HAVE_QUOTA_OFF_3ARGS
797 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
798 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
801 #endif /* __KERNEL__ */
802 #endif /* _COMPAT25_H */