4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
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 #include <linux/fs_struct.h>
43 #include <linux/namei.h>
44 #include <libcfs/linux/portals_compat25.h>
46 #include <linux/lustre_patchless_compat.h>
48 #ifdef HAVE_FS_STRUCT_RWLOCK
49 # define LOCK_FS_STRUCT(fs) cfs_write_lock(&(fs)->lock)
50 # define UNLOCK_FS_STRUCT(fs) cfs_write_unlock(&(fs)->lock)
52 # define LOCK_FS_STRUCT(fs) cfs_spin_lock(&(fs)->lock)
53 # define UNLOCK_FS_STRUCT(fs) cfs_spin_unlock(&(fs)->lock)
56 #ifdef HAVE_FS_STRUCT_USE_PATH
57 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
58 struct dentry *dentry)
77 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
78 struct dentry *dentry)
80 struct dentry *old_pwd;
81 struct vfsmount *old_pwdmnt;
85 old_pwdmnt = fs->pwdmnt;
86 fs->pwdmnt = mntget(mnt);
87 fs->pwd = dget(dentry);
98 * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
99 * ATTR_* attributes (see bug 13828)
101 #define ATTR_BLOCKS (1 << 27)
103 #define current_ngroups current_cred()->group_info->ngroups
104 #define current_groups current_cred()->group_info->small_block
107 * OBD need working random driver, thus all our
108 * initialization routines must be called after device
109 * driver initialization
113 #define module_init(a) late_initcall(a)
116 #ifndef HAVE_TRYLOCK_PAGE
117 #define trylock_page(page) (!TestSetPageLocked(page))
120 #define LTIME_S(time) (time.tv_sec)
122 #ifdef HAVE_EXPORT_INODE_PERMISSION
123 #define ll_permission(inode,mask,nd) inode_permission(inode,mask)
125 #define ll_permission(inode,mask,nd) permission(inode,mask,nd)
128 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
129 # define ll_generic_permission(inode, mask, flags, check_acl) \
130 generic_permission(inode, mask)
131 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
132 # define ll_generic_permission(inode, mask, flags, check_acl) \
133 generic_permission(inode, mask, flags, check_acl)
135 # define ll_generic_permission(inode, mask, flags, check_acl) \
136 generic_permission(inode, mask, check_acl)
139 #define ll_pgcache_lock(mapping) cfs_spin_lock(&mapping->page_lock)
140 #define ll_pgcache_unlock(mapping) cfs_spin_unlock(&mapping->page_lock)
141 #define ll_call_writepage(inode, page) \
142 (inode)->i_mapping->a_ops->writepage(page, NULL)
143 #define ll_invalidate_inode_pages(inode) \
144 invalidate_inode_pages((inode)->i_mapping)
146 #define ll_vfs_create(a,b,c,d) vfs_create(a,b,c,d)
147 #define ll_dev_t dev_t
149 #define to_kdev_t(dev) (dev)
150 #define kdev_t_to_nr(dev) (dev)
151 #define val_to_kdev(dev) (dev)
153 #ifdef HAVE_BLKDEV_PUT_2ARGS
154 #define ll_blkdev_put(a, b) blkdev_put(a, b)
156 #define ll_blkdev_put(a, b) blkdev_put(a)
159 #ifdef HAVE_DENTRY_OPEN_4ARGS
160 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c, d)
162 #define ll_dentry_open(a, b, c, d) dentry_open(a, b, c)
165 #include <linux/writeback.h>
167 static inline int cfs_cleanup_group_info(void)
169 struct group_info *ginfo;
171 ginfo = groups_alloc(0);
175 set_current_groups(ginfo);
176 put_group_info(ginfo);
181 #define __set_page_ll_data(page, llap) \
183 page_cache_get(page); \
184 SetPagePrivate(page); \
185 set_page_private(page, (unsigned long)llap); \
187 #define __clear_page_ll_data(page) \
189 ClearPagePrivate(page); \
190 set_page_private(page, 0); \
191 page_cache_release(page); \
196 #include <linux/proc_fs.h>
198 #define CheckWriteback(page, cmd) \
199 ((!PageWriteback(page) && (cmd & OBD_BRW_READ)) || \
200 (PageWriteback(page) && (cmd & OBD_BRW_WRITE)))
202 #ifdef HAVE_PAGE_LIST
203 static inline int mapping_has_pages(struct address_space *mapping)
207 ll_pgcache_lock(mapping);
208 if (cfs_list_empty(&mapping->dirty_pages) &&
209 cfs_list_empty(&mapping->clean_pages) &&
210 cfs_list_empty(&mapping->locked_pages)) {
213 ll_pgcache_unlock(mapping);
218 static inline int mapping_has_pages(struct address_space *mapping)
220 return mapping->nrpages > 0;
224 #ifdef HAVE_KIOBUF_KIO_BLOCKS
225 #define KIOBUF_GET_BLOCKS(k) ((k)->kio_blocks)
227 #define KIOBUF_GET_BLOCKS(k) ((k)->blocks)
230 #ifdef HAVE_SECURITY_PLUG
231 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
232 vfs_symlink(dir, dentry, mnt, path, mode)
234 #ifdef HAVE_4ARGS_VFS_SYMLINK
235 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
236 vfs_symlink(dir, dentry, path, mode)
238 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
239 vfs_symlink(dir, dentry, path)
245 #define container_of(ptr, type, member) ({ \
246 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
247 (type *)( (char *)__mptr - offsetof(type,member) );})
250 #define UP_WRITE_I_ALLOC_SEM(i) up_write(&(i)->i_alloc_sem)
251 #define DOWN_WRITE_I_ALLOC_SEM(i) down_write(&(i)->i_alloc_sem)
252 #define LASSERT_I_ALLOC_SEM_WRITE_LOCKED(i) LASSERT(down_read_trylock(&(i)->i_alloc_sem) == 0)
254 #define UP_READ_I_ALLOC_SEM(i) up_read(&(i)->i_alloc_sem)
255 #define DOWN_READ_I_ALLOC_SEM(i) down_read(&(i)->i_alloc_sem)
256 #define LASSERT_I_ALLOC_SEM_READ_LOCKED(i) LASSERT(down_write_trylock(&(i)->i_alloc_sem) == 0)
258 #include <linux/mpage.h> /* for generic_writepages */
260 #ifdef HAVE_HIDE_VFSMOUNT_GUTS
261 # include <../fs/mount.h>
263 # define real_mount(mnt) (mnt)
266 static inline const char *mnt_get_devname(struct vfsmount *mnt)
268 return real_mount(mnt)->mnt_devname;
271 #ifndef HAVE_ATOMIC_MNT_COUNT
272 static inline unsigned int mnt_get_count(struct vfsmount *mnt)
275 unsigned int count = 0;
278 for_each_possible_cpu(cpu) {
279 count += per_cpu_ptr(real_mount(mnt)->mnt_pcp, cpu)->mnt_count;
284 return real_mount(mnt)->mnt_count;
288 # define mnt_get_count(mnt) cfs_atomic_read(&(real_mount(mnt)->mnt_count))
291 #ifdef HAVE_RW_TREE_LOCK
292 #define TREE_READ_LOCK_IRQ(mapping) read_lock_irq(&(mapping)->tree_lock)
293 #define TREE_READ_UNLOCK_IRQ(mapping) read_unlock_irq(&(mapping)->tree_lock)
295 #define TREE_READ_LOCK_IRQ(mapping) cfs_spin_lock_irq(&(mapping)->tree_lock)
296 #define TREE_READ_UNLOCK_IRQ(mapping) cfs_spin_unlock_irq(&(mapping)->tree_lock)
299 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
300 #define ll_unregister_blkdev(a,b) unregister_blkdev((a),(b))
303 int ll_unregister_blkdev(unsigned int dev, const char *name)
305 unregister_blkdev(dev, name);
310 #ifdef HAVE_INVALIDATE_BDEV_2ARG
311 #define ll_invalidate_bdev(a,b) invalidate_bdev((a),(b))
313 #define ll_invalidate_bdev(a,b) invalidate_bdev((a))
316 #define ll_inode_blksize(a) (1<<(a)->i_blkbits)
318 #ifdef HAVE_FS_RENAME_DOES_D_MOVE
319 #define LL_RENAME_DOES_D_MOVE FS_RENAME_DOES_D_MOVE
321 #define LL_RENAME_DOES_D_MOVE FS_ODD_RENAME
324 #ifndef HAVE_D_OBTAIN_ALIAS
325 /* The old d_alloc_anon() didn't free the inode reference on error
326 * like d_obtain_alias(). Hide that difference/inconvenience here. */
327 static inline struct dentry *d_obtain_alias(struct inode *inode)
329 struct dentry *anon = d_alloc_anon(inode);
333 anon = ERR_PTR(-ENOMEM);
340 /* add a lustre compatible layer for crypto API */
341 #include <linux/crypto.h>
342 #ifdef HAVE_ASYNC_BLOCK_CIPHER
343 #define ll_crypto_hash crypto_hash
344 #define ll_crypto_cipher crypto_blkcipher
345 #define ll_crypto_alloc_hash(name, type, mask) crypto_alloc_hash(name, type, mask)
346 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
347 #define ll_crypto_hash_init(desc) crypto_hash_init(desc)
348 #define ll_crypto_hash_update(desc, sl, bytes) crypto_hash_update(desc, sl, bytes)
349 #define ll_crypto_hash_final(desc, out) crypto_hash_final(desc, out)
350 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
351 crypto_blkcipher_setkey(tfm, key, keylen)
352 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
353 crypto_blkcipher_set_iv(tfm, src, len)
354 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
355 crypto_blkcipher_get_iv(tfm, dst, len)
356 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
357 crypto_blkcipher_encrypt(desc, dst, src, bytes)
358 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
359 crypto_blkcipher_decrypt(desc, dst, src, bytes)
360 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
361 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
362 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
363 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
366 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
369 struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
371 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
374 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
375 u8 *key, unsigned int *keylen,
376 struct scatterlist *sg,
377 unsigned int size, u8 *result)
379 struct hash_desc desc;
383 rv = crypto_hash_setkey(desc.tfm, key, *keylen);
385 CERROR("failed to hash setkey: %d\n", rv);
388 return crypto_hash_digest(&desc, sg, size, result);
391 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
393 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
396 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
398 return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
401 #define ll_crypto_hash_blocksize(tfm) crypto_hash_blocksize(tfm)
402 #define ll_crypto_hash_digestsize(tfm) crypto_hash_digestsize(tfm)
403 #define ll_crypto_blkcipher_ivsize(tfm) crypto_blkcipher_ivsize(tfm)
404 #define ll_crypto_blkcipher_blocksize(tfm) crypto_blkcipher_blocksize(tfm)
405 #define ll_crypto_free_hash(tfm) crypto_free_hash(tfm)
406 #define ll_crypto_free_blkcipher(tfm) crypto_free_blkcipher(tfm)
407 #else /* HAVE_ASYNC_BLOCK_CIPHER */
408 #include <linux/scatterlist.h>
409 #define ll_crypto_hash crypto_tfm
410 #define ll_crypto_cipher crypto_tfm
411 #ifndef HAVE_STRUCT_HASH_DESC
413 struct ll_crypto_hash *tfm;
417 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
418 struct blkcipher_desc {
419 struct ll_crypto_cipher *tfm;
424 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
425 crypto_cipher_setkey(tfm, key, keylen)
426 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
427 crypto_cipher_set_iv(tfm, src, len)
428 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
429 crypto_cipher_get_iv(tfm, dst, len)
430 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
431 crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
432 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
433 crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
434 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
435 crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
436 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
437 crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
440 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
443 struct ll_crypto_cipher *rtn;
444 char buf[CRYPTO_MAX_ALG_NAME + 1];
445 const char *pan = algname;
448 if (strncmp("cbc(", algname, 4) == 0)
449 flag |= CRYPTO_TFM_MODE_CBC;
450 else if (strncmp("ecb(", algname, 4) == 0)
451 flag |= CRYPTO_TFM_MODE_ECB;
453 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
455 memcpy(buf, algname + 4, vp - algname - 4);
456 buf[vp - algname - 4] = '\0';
462 rtn = crypto_alloc_tfm(pan, flag);
463 return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
467 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
469 char buf[CRYPTO_MAX_ALG_NAME + 1];
470 const char *pan = alg;
472 if (strncmp("hmac(", alg, 5) == 0) {
473 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
475 memcpy(buf, alg+ 5, vp - alg- 5);
476 buf[vp - alg - 5] = 0x00;
480 return crypto_alloc_tfm(pan, 0);
482 static inline int ll_crypto_hash_init(struct hash_desc *desc)
484 crypto_digest_init(desc->tfm); return 0;
486 static inline int ll_crypto_hash_update(struct hash_desc *desc,
487 struct scatterlist *sg,
490 struct scatterlist *sl = sg;
493 * This way is very weakness. We must ensure that
494 * the sum of sg[0..i]->length isn't greater than nbytes.
495 * In the upstream kernel the crypto_hash_update() also
496 * via the nbytes computed the count of sg[...].
497 * The old style is more safely. but it gone.
499 for (count = 0; nbytes > 0; count ++, sl ++) {
500 nbytes -= sl->length;
502 crypto_digest_update(desc->tfm, sg, count); return 0;
504 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
506 crypto_digest_final(desc->tfm, out); return 0;
508 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
509 u8 *key, unsigned int *keylen,
510 struct scatterlist *sg,
514 struct scatterlist *sl = sg;
516 for (count = 0; nbytes > 0; count ++, sl ++) {
517 nbytes -= sl->length;
519 crypto_hmac(tfm, key, keylen, sg, count, out);
523 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
524 #define ll_crypto_blkcipher_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
525 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
526 #define ll_crypto_hash_digestsize(tfm) crypto_tfm_alg_digestsize(tfm)
527 #define ll_crypto_hash_blocksize(tfm) crypto_tfm_alg_blocksize(tfm)
528 #define ll_crypto_free_hash(tfm) crypto_free_tfm(tfm)
529 #define ll_crypto_free_blkcipher(tfm) crypto_free_tfm(tfm)
530 #define ll_crypto_tfm_alg_min_keysize crypto_tfm_alg_min_keysize
531 #define ll_crypto_tfm_alg_max_keysize crypto_tfm_alg_max_keysize
532 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
534 #ifdef HAVE_SECURITY_PLUG
535 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry,mnt)
536 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mnt,mode)
537 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,mnt,dir,new,mnt1)
538 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry,mnt)
539 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) \
540 vfs_mknod(dir,entry,mnt,mode,dev)
541 #define ll_security_inode_unlink(dir,entry,mnt) \
542 security_inode_unlink(dir,entry,mnt)
543 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
544 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
546 #define ll_vfs_rmdir(dir,entry,mnt) vfs_rmdir(dir,entry)
547 #define ll_vfs_mkdir(inode,dir,mnt,mode) vfs_mkdir(inode,dir,mode)
548 #define ll_vfs_link(old,mnt,dir,new,mnt1) vfs_link(old,dir,new)
549 #define ll_vfs_unlink(inode,entry,mnt) vfs_unlink(inode,entry)
550 #define ll_vfs_mknod(dir,entry,mnt,mode,dev) vfs_mknod(dir,entry,mode,dev)
551 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
552 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
553 vfs_rename(old,old_dir,new,new_dir)
554 #endif /* HAVE_SECURITY_PLUG */
556 #ifdef for_each_possible_cpu
557 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
558 #elif defined(for_each_cpu)
559 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
562 #ifdef HAVE_BIO_ENDIO_2ARG
563 #define cfs_bio_io_error(a,b) bio_io_error((a))
564 #define cfs_bio_endio(a,b,c) bio_endio((a),(c))
566 #define cfs_bio_io_error(a,b) bio_io_error((a),(b))
567 #define cfs_bio_endio(a,b,c) bio_endio((a),(b),(c))
570 #ifdef HAVE_FS_STRUCT_USE_PATH
571 #define cfs_fs_pwd(fs) ((fs)->pwd.dentry)
572 #define cfs_fs_mnt(fs) ((fs)->pwd.mnt)
573 #define cfs_path_put(nd) path_put(&(nd)->path)
575 #define cfs_fs_pwd(fs) ((fs)->pwd)
576 #define cfs_fs_mnt(fs) ((fs)->pwdmnt)
577 #define cfs_path_put(nd) path_release(nd)
580 #ifndef HAVE_SIMPLE_SETATTR
581 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
584 #ifndef SLAB_DESTROY_BY_RCU
585 #define SLAB_DESTROY_BY_RCU 0
588 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
589 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
592 #ifndef HAVE_SB_ANY_QUOTA_LOADED
593 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
594 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
596 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
601 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
605 if (sb->s_qcop->quota_on) {
606 #ifdef HAVE_QUOTA_ON_USE_PATH
609 rc = kern_path(name, LOOKUP_FOLLOW, &path);
613 rc = sb->s_qcop->quota_on(sb, off, ver
614 #ifdef HAVE_QUOTA_ON_USE_PATH
619 #ifdef HAVE_QUOTA_ON_5ARGS
623 #ifdef HAVE_QUOTA_ON_USE_PATH
632 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
634 if (sb->s_qcop->quota_off) {
635 return sb->s_qcop->quota_off(sb, off
636 #ifdef HAVE_QUOTA_OFF_3ARGS
645 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
646 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
649 #ifndef HAVE_VFS_DQ_OFF
650 # define ll_vfs_dq_init DQUOT_INIT
651 # define ll_vfs_dq_drop DQUOT_DROP
652 # define ll_vfs_dq_transfer DQUOT_TRANSFER
653 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
655 # define ll_vfs_dq_init vfs_dq_init
656 # define ll_vfs_dq_drop vfs_dq_drop
657 # define ll_vfs_dq_transfer vfs_dq_transfer
658 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
662 #define ll_bdi_init(bdi) bdi_init(bdi)
663 #define ll_bdi_destroy(bdi) bdi_destroy(bdi)
665 #define ll_bdi_init(bdi) 0
666 #define ll_bdi_destroy(bdi) do { } while(0)
669 #ifdef HAVE_NEW_BACKING_DEV_INFO
670 # define ll_bdi_wb_cnt(bdi) ((bdi).wb_cnt)
672 # define ll_bdi_wb_cnt(bdi) 1
675 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
676 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
679 #ifndef HAVE_BLKDEV_GET_BY_DEV
680 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
683 #ifndef HAVE_REQUEST_QUEUE_LIMITS
684 #define queue_max_sectors(rq) ((rq)->max_sectors)
685 #define queue_max_hw_sectors(rq) ((rq)->max_hw_sectors)
686 #define queue_max_phys_segments(rq) ((rq)->max_phys_segments)
687 #define queue_max_hw_segments(rq) ((rq)->max_hw_segments)
690 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
691 #define blk_queue_max_segments(rq, seg) \
692 do { blk_queue_max_phys_segments(rq, seg); \
693 blk_queue_max_hw_segments(rq, seg); } while (0)
695 #define queue_max_phys_segments(rq) queue_max_segments(rq)
696 #define queue_max_hw_segments(rq) queue_max_segments(rq)
700 #ifndef HAVE_BI_HW_SEGMENTS
701 #define bio_hw_segments(q, bio) 0
704 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
705 #define pagevec_lru_add_file pagevec_lru_add
708 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
709 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
710 add_to_page_cache_lru(pg, mapping, off, gfp)
711 #define ll_pagevec_init(pv, cold) do {} while (0)
712 #define ll_pagevec_add(pv, pg) (0)
713 #define ll_pagevec_lru_add_file(pv) do {} while (0)
715 #define ll_add_to_page_cache_lru(pg, mapping, off, gfp) \
716 add_to_page_cache(pg, mapping, off, gfp)
717 #define ll_pagevec_init(pv, cold) pagevec_init(&lru_pvec, cold);
718 #define ll_pagevec_add(pv, pg) \
722 page_cache_get(pg); \
723 __ret = pagevec_add(pv, pg); \
725 #define ll_pagevec_lru_add_file(pv) pagevec_lru_add_file(pv)
728 #if !defined(HAVE_NODE_TO_CPUMASK) && defined(HAVE_CPUMASK_OF_NODE)
729 #define node_to_cpumask(i) (*(cpumask_of_node(i)))
730 #define HAVE_NODE_TO_CPUMASK
737 # define NO_QUOTA (-EDQUOT)
740 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
741 # define ext2_set_bit __test_and_set_bit_le
742 # define ext2_clear_bit __test_and_clear_bit_le
743 # define ext2_test_bit test_bit_le
744 # define ext2_find_first_zero_bit find_first_zero_bit_le
745 # define ext2_find_next_zero_bit find_next_zero_bit_le
748 #ifdef ATTR_TIMES_SET
749 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
751 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
754 #ifndef HAVE_SELINUX_IS_ENABLED
755 static inline bool selinux_is_enabled(void)
761 #endif /* __KERNEL__ */
762 #endif /* _COMPAT25_H */