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.
32 * Copyright (c) 2011, 2012, Whamcloud, Inc.
35 * This file is part of Lustre, http://www.lustre.org/
36 * Lustre is a trademark of Sun Microsystems, Inc.
39 #ifndef _LINUX_COMPAT25_H
40 #define _LINUX_COMPAT25_H
44 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
45 #error sorry, lustre requires at least linux kernel 2.6.9 or later
48 #include <linux/fs_struct.h>
49 #include <linux/namei.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_RWLOCK
72 # define LOCK_FS_STRUCT(fs) cfs_write_lock(&(fs)->lock)
73 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
75 # define LOCK_FS_STRUCT(fs) cfs_spin_lock(&(fs)->lock)
76 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
79 #ifdef HAVE_FS_STRUCT_USE_PATH
80 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
81 struct dentry *dentry)
100 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
101 struct dentry *dentry)
103 struct dentry *old_pwd;
104 struct vfsmount *old_pwdmnt;
108 old_pwdmnt = fs->pwdmnt;
109 fs->pwdmnt = mntget(mnt);
110 fs->pwd = dget(dentry);
111 UNLOCK_FS_STRUCT(fs);
121 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
122 * ATTR_* attributes (see bug 13828)
124 #define ATTR_BLOCKS (1 << 27)
126 #if HAVE_INODE_I_MUTEX
127 #define UNLOCK_INODE_MUTEX(inode) \
128 do {cfs_mutex_unlock(&(inode)->i_mutex); } while(0)
129 #define LOCK_INODE_MUTEX(inode) \
130 do {cfs_mutex_lock(&(inode)->i_mutex); } while(0)
131 #define LOCK_INODE_MUTEX_PARENT(inode) \
132 do {cfs_mutex_lock_nested(&(inode)->i_mutex, I_MUTEX_PARENT); } while(0)
133 #define TRYLOCK_INODE_MUTEX(inode) cfs_mutex_trylock(&(inode)->i_mutex)
135 #define UNLOCK_INODE_MUTEX(inode) do cfs_up(&(inode)->i_sem); } while(0)
136 #define LOCK_INODE_MUTEX(inode) do cfs_down(&(inode)->i_sem); } while(0)
137 #define TRYLOCK_INODE_MUTEX(inode) (!down_trylock(&(inode)->i_sem))
138 #define LOCK_INODE_MUTEX_PARENT(inode) LOCK_INODE_MUTEX(inode)
139 #endif /* HAVE_INODE_I_MUTEX */
142 #define LL_SEQ_LOCK(seq) cfs_mutex_lock(&(seq)->lock)
143 #define LL_SEQ_UNLOCK(seq) cfs_mutex_unlock(&(seq)->lock)
145 #define LL_SEQ_LOCK(seq) cfs_down(&(seq)->sem)
146 #define LL_SEQ_UNLOCK(seq) cfs_up(&(seq)->sem)
149 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
150 #define d_child d_u.d_child
151 #define d_rcu d_u.d_rcu
154 #ifdef HAVE_DQUOTOFF_MUTEX
155 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_unlock(&(dqopt)->dqonoff_mutex)
156 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_mutex_lock(&(dqopt)->dqonoff_mutex)
158 #define UNLOCK_DQONOFF_MUTEX(dqopt) cfs_up(&(dqopt)->dqonoff_sem)
159 #define LOCK_DQONOFF_MUTEX(dqopt) cfs_down(&(dqopt)->dqonoff_sem)
160 #endif /* HAVE_DQUOTOFF_MUTEX */
162 #define current_ngroups current_cred()->group_info->ngroups
163 #define current_groups current_cred()->group_info->small_block
166 #define page_private(page) ((page)->private)
167 #define set_page_private(page, v) ((page)->private = (v))
170 #define lock_dentry(___dentry) cfs_spin_lock(&(___dentry)->d_lock)
171 #define unlock_dentry(___dentry) cfs_spin_unlock(&(___dentry)->d_lock)
173 #define ll_kernel_locked() kernel_locked()
176 * OBD need working random driver, thus all our
177 * initialization routines must be called after device
178 * driver initialization
182 #define module_init(a) late_initcall(a)
185 /* XXX our code should be using the 2.6 calls, not the other way around */
186 #ifdef HAVE_TRYLOCK_PAGE
187 #define TestSetPageLocked(page) (!trylock_page(page))
190 #define Page_Uptodate(page) PageUptodate(page)
191 #define ll_redirty_page(page) set_page_dirty(page)
193 #define KDEVT_INIT(val) (val)
195 #define LTIME_S(time) (time.tv_sec)
196 #define ll_path_lookup path_lookup
198 #ifdef HAVE_EXPORT_INODE_PERMISSION
199 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
201 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
204 #ifdef HAVE_GENERIC_PERMISSION_4ARGS
205 #define ll_generic_permission(inode, mask, flags, check_acl) \
206 generic_permission(inode, mask, flags, check_acl)
208 #define ll_generic_permission(inode, mask, flags, check_acl) \
209 generic_permission(inode, mask, check_acl)
212 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
213 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
214 #define ll_call_writepage(inode, page) \
215 (inode)->i_mapping->a_ops->writepage(page, NULL)
216 #define ll_invalidate_inode_pages(inode) \
217 invalidate_inode_pages((inode)->i_mapping)
219 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
220 #define ll_dev_t dev_t
222 #define to_kdev_t(dev) (dev)
223 #define kdev_t_to_nr(dev) (dev)
224 #define val_to_kdev(dev) (dev)
226 #ifdef HAVE_BLKDEV_PUT_2ARGS
227 #define ll_blkdev_put(a, b) blkdev_put(a, b)
229 #define ll_blkdev_put(a, b) blkdev_put(a)
232 #ifdef HAVE_DENTRY_OPEN_4ARGS
233 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
235 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
238 #include <linux/writeback.h>
240 static inline int cfs_cleanup_group_info(void)
242 struct group_info *ginfo;
244 ginfo = groups_alloc(0);
248 set_current_groups(ginfo);
249 put_group_info(ginfo);
254 #define __set_page_ll_data(page, llap) \
256 page_cache_get(page); \
257 SetPagePrivate(page); \
258 set_page_private(page, (unsigned long)llap); \
260 #define __clear_page_ll_data(page) \
262 ClearPagePrivate(page); \
263 set_page_private(page, 0); \
264 page_cache_release(page); \
269 #include <linux/proc_fs.h>
271 #if !defined(HAVE_D_REHASH_COND) && defined(HAVE___D_REHASH)
272 #define d_rehash_cond(dentry, lock) __d_rehash(dentry, lock)
273 extern void __d_rehash(struct dentry *dentry, int lock);
276 #ifdef HAVE_CAN_SLEEP_ARG
277 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
278 flock_lock_file_wait(file, lock, can_sleep)
280 #define ll_flock_lock_file_wait(file, lock, can_sleep) \
281 flock_lock_file_wait(file, lock)
284 #define CheckWriteback(page, cmd) \
285 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
286 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
288 #ifdef HAVE_PAGE_LIST
289 static inline int mapping_has_pages(struct address_space *mapping)
293 ll_pgcache_lock(mapping);
294 if (cfs_list_empty(&mapping->dirty_pages) &&
295 cfs_list_empty(&mapping->clean_pages) &&
296 cfs_list_empty(&mapping->locked_pages)) {
299 ll_pgcache_unlock(mapping);
304 static inline int mapping_has_pages(struct address_space *mapping)
306 return mapping->nrpages > 0;
310 #ifdef HAVE_KIOBUF_KIO_BLOCKS
311 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
313 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
316 #ifdef HAVE_SECURITY_PLUG
317 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
318 vfs_symlink(dir, dentry, mnt, path, mode)
320 #ifdef HAVE_4ARGS_VFS_SYMLINK
321 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
322 vfs_symlink(dir, dentry, path, mode)
324 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
325 vfs_symlink(dir, dentry, path)
328 #define ll_set_dflags(dentry, flags) do { \
329 cfs_spin_lock(&dentry->d_lock); \
330 dentry->d_flags |= flags; \
331 cfs_spin_unlock(&dentry->d_lock); \
336 #define container_of(ptr, type, member) ({ \
337 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
338 (type *)( (char *)__mptr - offsetof(type,member) );})
341 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
342 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
343 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
345 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
346 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
347 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
349 #ifndef HAVE_GRAB_CACHE_PAGE_NOWAIT_GFP
350 #define grab_cache_page_nowait_gfp(x, y, z) grab_cache_page_nowait((x), (y))
353 #include <linux/mpage.h> /* for generic_writepages */
354 #ifndef HAVE_FILEMAP_FDATAWRITE_RANGE
355 #include <linux/backing-dev.h> /* for mapping->backing_dev_info */
356 static inline int filemap_fdatawrite_range(struct address_space *mapping,
357 loff_t start, loff_t end)
360 struct writeback_control wbc = {
361 .sync_mode = WB_SYNC_ALL,
362 .nr_to_write = (end - start + PAGE_SIZE - 1) >> PAGE_SHIFT,
365 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
366 wbc.range_start = start;
373 #ifdef HAVE_MAPPING_CAP_WRITEBACK_DIRTY
374 if (!mapping_cap_writeback_dirty(mapping))
377 if (mapping->backing_dev_info->memory_backed)
380 /* do_writepages() */
381 else if (mapping->a_ops->writepages)
382 rc = mapping->a_ops->writepages(mapping, &wbc);
384 rc = generic_writepages(mapping, &wbc);
388 int filemap_fdatawrite_range(struct address_space *mapping,
389 loff_t start, loff_t end);
390 #endif /* HAVE_FILEMAP_FDATAWRITE_RANGE */
392 #ifdef HAVE_VFS_KERN_MOUNT
393 static inline struct vfsmount *
394 ll_kern_mount(const char *fstype, int flags, const char *name, void *data)
396 struct file_system_type *type = get_fs_type(fstype);
397 struct vfsmount *mnt;
399 return ERR_PTR(-ENODEV);
400 mnt = vfs_kern_mount(type, flags, name, data);
401 cfs_module_put(type->owner);
405 #define ll_kern_mount(fstype, flags, name, data) do_kern_mount((fstype), (flags), (name), (data))
408 #ifndef HAVE_ATOMIC_MNT_COUNT
409 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
412 unsigned int count = 0;
415 for_each_possible_cpu(cpu) {
416 count += per_cpu_ptr(mnt->mnt_pcp, cpu)->mnt_count;
421 return mnt->mnt_count;
425 # define mnt_get_count(mnt) cfs_atomic_read(&mnt->mnt_count)
428 #ifdef HAVE_STATFS_DENTRY_PARAM
429 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb)->s_root, (sfs))
431 #define ll_do_statfs(sb, sfs) (sb)->s_op->statfs((sb), (sfs))
434 #ifndef HAVE_SB_TIME_GRAN
435 #ifndef HAVE_S_TIME_GRAN
436 #error Need s_time_gran patch!
438 static inline u32 get_sb_time_gran(struct super_block *sb)
440 return sb->s_time_gran;
444 #ifdef HAVE_RW_TREE_LOCK
445 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
446 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
448 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
449 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
452 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
453 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
456 int ll_unregister_blkdev(unsigned int dev, const char *name)
458 unregister_blkdev(dev, name);
463 #ifdef HAVE_INVALIDATE_BDEV_2ARG
464 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
466 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
469 #ifdef HAVE_INODE_BLKSIZE
470 #define ll_inode_blksize(a) (a)->i_blksize
472 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
475 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
476 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
478 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
481 #ifndef HAVE_D_OBTAIN_ALIAS
482 /* The old d_alloc_anon() didn't free the inode reference on error
483 * like d_obtain_alias(). Hide that difference/inconvenience here. */
484 static inline struct dentry *d_obtain_alias(struct inode *inode)
486 struct dentry *anon = d_alloc_anon(inode);
490 anon = ERR_PTR(-ENOMEM);
497 /* add a lustre compatible layer for crypto API */
498 #include <linux/crypto.h>
499 #ifdef HAVE_ASYNC_BLOCK_CIPHER
500 #define ll_crypto_hash crypto_hash
501 #define ll_crypto_cipher crypto_blkcipher
502 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
503 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
504 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
505 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
506 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
507 #define ll_crypto_alloc_blkcipher(name, type, mask) \
508 crypto_alloc_blkcipher(name ,type, mask)
509 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
510 crypto_blkcipher_setkey(tfm, key, keylen)
511 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
512 crypto_blkcipher_set_iv(tfm, src, len)
513 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
514 crypto_blkcipher_get_iv(tfm, dst, len)
515 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
516 crypto_blkcipher_encrypt(desc, dst, src, bytes)
517 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
518 crypto_blkcipher_decrypt(desc, dst, src, bytes)
519 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
520 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
521 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
522 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
524 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
525 u8 *key, unsigned int *keylen,
526 struct scatterlist *sg,
527 unsigned int size, u8 *result)
529 struct hash_desc desc;
533 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
535 CERROR("failed to hash setkey: %d\n", rv);
538 return crypto_hash_digest(&desc, sg, size, result);
541 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
543 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
546 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
548 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
551 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
552 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
553 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
554 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
555 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
556 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
557 #else /* HAVE_ASYNC_BLOCK_CIPHER */
558 #include <linux/scatterlist.h>
559 #define ll_crypto_hash crypto_tfm
560 #define ll_crypto_cipher crypto_tfm
561 #ifndef HAVE_STRUCT_HASH_DESC
563 struct ll_crypto_hash *tfm;
567 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
568 struct blkcipher_desc {
569 struct ll_crypto_cipher *tfm;
574 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
575 crypto_cipher_setkey(tfm, key, keylen)
576 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
577 crypto_cipher_set_iv(tfm, src, len)
578 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
579 crypto_cipher_get_iv(tfm, dst, len)
580 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
581 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
582 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
583 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
584 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
585 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
586 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
587 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
590 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
593 char buf[CRYPTO_MAX_ALG_NAME + 1];
594 const char *pan = algname;
597 if (strncmp("cbc(", algname, 4) == 0)
598 flag |= CRYPTO_TFM_MODE_CBC;
599 else if (strncmp("ecb(", algname, 4) == 0)
600 flag |= CRYPTO_TFM_MODE_ECB;
602 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
604 memcpy(buf, algname + 4, vp - algname - 4);
605 buf[vp - algname - 4] = '\0';
611 return crypto_alloc_tfm(pan, flag);
615 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
617 char buf[CRYPTO_MAX_ALG_NAME + 1];
618 const char *pan = alg;
620 if (strncmp("hmac(", alg, 5) == 0) {
621 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
623 memcpy(buf, alg+ 5, vp - alg- 5);
624 buf[vp - alg - 5] = 0x00;
628 return crypto_alloc_tfm(pan, 0);
630 static inline int ll_crypto_hash_init(struct hash_desc *desc)
632 crypto_digest_init(desc->tfm); return 0;
634 static inline int ll_crypto_hash_update(struct hash_desc *desc,
635 struct scatterlist *sg,
638 struct scatterlist *sl = sg;
641 * This way is very weakness. We must ensure that
642 * the sum of sg[0..i]->length isn't greater than nbytes.
643 * In the upstream kernel the crypto_hash_update() also
644 * via the nbytes computed the count of sg[...].
645 * The old style is more safely. but it gone.
647 for (count = 0; nbytes > 0; count ++, sl ++) {
648 nbytes -= sl->length;
650 crypto_digest_update(desc->tfm, sg, count); return 0;
652 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
654 crypto_digest_final(desc->tfm, out); return 0;
656 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
657 u8 *key, unsigned int *keylen,
658 struct scatterlist *sg,
662 struct scatterlist *sl = sg;
664 for (count = 0; nbytes > 0; count ++, sl ++) {
665 nbytes -= sl->length;
667 crypto_hmac(tfm, key, keylen, sg, count, out);
671 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
672 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
673 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
674 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
675 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
676 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
677 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
678 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
679 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
680 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
682 #ifdef HAVE_FILE_REMOVE_SUID
683 # define ll_remove_suid(file, mnt) file_remove_suid(file)
685 # ifdef HAVE_SECURITY_PLUG
686 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry,mnt)
688 # define ll_remove_suid(file,mnt) remove_suid(file->f_dentry)
692 #ifdef HAVE_SECURITY_PLUG
693 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
694 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
695 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
696 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
697 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
698 vfs_mknod(dir,entry,mnt,mode,dev)
699 #define ll_security_inode_unlink(dir,entry,mnt) \
700 security_inode_unlink(dir,entry,mnt)
701 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
702 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
704 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
705 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
706 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
707 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
708 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
709 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
710 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
711 vfs_rename(old,old_dir,new,new_dir)
712 #endif /* HAVE_SECURITY_PLUG */
714 #ifdef for_each_possible_cpu
715 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
716 #elif defined(for_each_cpu)
717 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
720 #ifdef HAVE_BIO_ENDIO_2ARG
721 #define cfs_bio_io_error(a,b) bio_io_error((a))
722 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
724 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
725 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
728 #ifdef HAVE_FS_STRUCT_USE_PATH
729 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
730 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
731 #define cfs_path_put(nd) path_put(&(nd)->path)
733 #define cfs_fs_pwd(fs) ((fs)->pwd)
734 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
735 #define cfs_path_put(nd) path_release(nd)
739 static inline int abs(int x)
741 return (x < 0) ? -x : x;
746 static inline long labs(long x)
748 return (x < 0) ? -x : x;
750 #endif /* HAVE_REGISTER_SHRINKER */
752 #ifdef HAVE_INVALIDATE_INODE_PAGES
753 #define invalidate_mapping_pages(mapping,s,e) invalidate_inode_pages(mapping)
756 #ifdef HAVE_INODE_IPRIVATE
757 #define INODE_PRIVATE_DATA(inode) ((inode)->i_private)
759 #define INODE_PRIVATE_DATA(inode) ((inode)->u.generic_ip)
762 #ifndef HAVE_SIMPLE_SETATTR
763 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
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_LOADED
779 #define ll_sb_any_quota_active(sb) sb_any_quota_loaded(sb)
780 #elif defined(HAVE_SB_ANY_QUOTA_ACTIVE)
781 #define ll_sb_any_quota_active(sb) sb_any_quota_active(sb)
783 #define ll_sb_any_quota_active(sb) sb_any_quota_enabled(sb)
787 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
791 if (sb->s_qcop->quota_on) {
792 #ifdef HAVE_QUOTA_ON_USE_PATH
795 rc = kern_path(name, LOOKUP_FOLLOW, &path);
799 rc = sb->s_qcop->quota_on(sb, off, ver
800 #ifdef HAVE_QUOTA_ON_USE_PATH
805 #ifdef HAVE_QUOTA_ON_5ARGS
809 #ifdef HAVE_QUOTA_ON_USE_PATH
818 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
820 if (sb->s_qcop->quota_off) {
821 return sb->s_qcop->quota_off(sb, off
822 #ifdef HAVE_QUOTA_OFF_3ARGS
831 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
832 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
835 #ifndef HAVE_VFS_DQ_OFF
836 # define ll_vfs_dq_init DQUOT_INIT
837 # define ll_vfs_dq_drop DQUOT_DROP
838 # define ll_vfs_dq_transfer DQUOT_TRANSFER
839 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
841 # define ll_vfs_dq_init vfs_dq_init
842 # define ll_vfs_dq_drop vfs_dq_drop
843 # define ll_vfs_dq_transfer vfs_dq_transfer
844 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
848 #define ll_bdi_init(bdi) bdi_init(bdi)
849 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
851 #define ll_bdi_init(bdi) 0
852 #define ll_bdi_destroy(bdi) do { } while(0)
855 #ifdef HAVE_NEW_BACKING_DEV_INFO
856 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
858 # define ll_bdi_wb_cnt(bdi) 1
861 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
862 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
865 #ifndef HAVE_BLKDEV_GET_BY_DEV
866 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
869 #ifndef HAVE_REQUEST_QUEUE_LIMITS
870 #define queue_max_sectors(rq) ((rq)->max_sectors)
871 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
872 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
873 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
876 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
877 #define blk_queue_max_segments(rq, seg) \
878 do { blk_queue_max_phys_segments(rq, seg); \
879 blk_queue_max_hw_segments(rq, seg); } while (0)
881 #define queue_max_phys_segments(rq) queue_max_segments(rq)
882 #define queue_max_hw_segments(rq) queue_max_segments(rq)
886 #ifndef HAVE_BI_HW_SEGMENTS
887 #define bio_hw_segments(q, bio) 0
890 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
891 #define pagevec_lru_add_file pagevec_lru_add
894 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
895 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
896 add_to_page_cache_lru(pg, mapping, off, gfp)
897 #define ll_pagevec_init(pv, cold) do {} while (0)
898 #define ll_pagevec_add(pv, pg) (0)
899 #define ll_pagevec_lru_add_file(pv) do {} while (0)
901 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
902 add_to_page_cache(pg, mapping, off, gfp)
903 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
904 #define ll_pagevec_add(pv, pg) pagevec_add(pv, pg)
905 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
908 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
909 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
910 #define HAVE_NODE_TO_CPUMASK
917 # define NO_QUOTA (-EDQUOT)
920 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
921 # define ext2_set_bit __test_and_set_bit_le
922 # define ext2_clear_bit __test_and_clear_bit_le
923 # define ext2_test_bit test_bit_le
924 # define ext2_find_first_zero_bit find_first_zero_bit_le
925 # define ext2_find_next_zero_bit find_next_zero_bit_le
928 #ifdef ATTR_TIMES_SET
929 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
931 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
934 #endif /* __KERNEL__ */
935 #endif /* _COMPAT25_H */