lustre/include/linux/lustre_compat25.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef _LINUX_COMPAT25_H
  38 #define _LINUX_COMPAT25_H
  39
  40 #include <linux/fs_struct.h>
  41 #include <linux/namei.h>
  42 #include <libcfs/linux/portals_compat25.h>
  43
  44 #include <linux/lustre_patchless_compat.h>
  45
  46 #ifdef HAVE_FS_STRUCT_RWLOCK
  47 # define LOCK_FS_STRUCT(fs)     write_lock(&(fs)->lock)
  48 # define UNLOCK_FS_STRUCT(fs)   write_unlock(&(fs)->lock)
  49 #else
  50 # define LOCK_FS_STRUCT(fs)     spin_lock(&(fs)->lock)
  51 # define UNLOCK_FS_STRUCT(fs)   spin_unlock(&(fs)->lock)
  52 #endif
  53
  54 #ifdef HAVE_FS_STRUCT_USE_PATH
  55 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  56                                  struct dentry *dentry)
  57 {
  58         struct path path;
  59         struct path old_pwd;
  60
  61         path.mnt = mnt;
  62         path.dentry = dentry;
  63         LOCK_FS_STRUCT(fs);
  64         old_pwd = fs->pwd;
  65         path_get(&path);
  66         fs->pwd = path;
  67         UNLOCK_FS_STRUCT(fs);
  68
  69         if (old_pwd.dentry)
  70                 path_put(&old_pwd);
  71 }
  72
  73 #else
  74
  75 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
  76                 struct dentry *dentry)
  77 {
  78         struct dentry *old_pwd;
  79         struct vfsmount *old_pwdmnt;
  80
  81         LOCK_FS_STRUCT(fs);
  82         old_pwd = fs->pwd;
  83         old_pwdmnt = fs->pwdmnt;
  84         fs->pwdmnt = mntget(mnt);
  85         fs->pwd = dget(dentry);
  86         UNLOCK_FS_STRUCT(fs);
  87
  88         if (old_pwd) {
  89                 dput(old_pwd);
  90                 mntput(old_pwdmnt);
  91         }
  92 }
  93 #endif
  94
  95 /*
  96  * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
  97  * ATTR_* attributes (see bug 13828)
  98  */
  99 #define ATTR_BLOCKS    (1 << 27)
 100
 101 #define current_ngroups current_cred()->group_info->ngroups
 102 #define current_groups current_cred()->group_info->small_block
 103
 104 /*
 105  * OBD need working random driver, thus all our
 106  * initialization routines must be called after device
 107  * driver initialization
 108  */
 109 #ifndef MODULE
 110 #undef module_init
 111 #define module_init(a)     late_initcall(a)
 112 #endif
 113
 114 #ifndef HAVE_TRYLOCK_PAGE
 115 #define trylock_page(page)              (!TestSetPageLocked(page))
 116 #endif
 117
 118 #define LTIME_S(time)                   (time.tv_sec)
 119
 120 #ifdef HAVE_EXPORT_INODE_PERMISSION
 121 #define ll_permission(inode,mask,nd)    inode_permission(inode,mask)
 122 #else
 123 #define ll_permission(inode,mask,nd)    permission(inode,mask,nd)
 124 #endif
 125
 126 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
 127 # define ll_generic_permission(inode, mask, flags, check_acl) \
 128          generic_permission(inode, mask)
 129 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
 130 # define ll_generic_permission(inode, mask, flags, check_acl) \
 131          generic_permission(inode, mask, flags, check_acl)
 132 #else
 133 # define ll_generic_permission(inode, mask, flags, check_acl) \
 134          generic_permission(inode, mask, check_acl)
 135 #endif
 136
 137 #ifdef HAVE_BLKDEV_PUT_2ARGS
 138 #define ll_blkdev_put(a, b) blkdev_put(a, b)
 139 #else
 140 #define ll_blkdev_put(a, b) blkdev_put(a)
 141 #endif
 142
 143 #ifdef HAVE_DENTRY_OPEN_USE_PATH
 144 #define ll_dentry_open(a,b,c)   dentry_open(a,b,c)
 145 #else
 146 /*
 147  * dentry_open handles its own reference counting since Linux v3.6
 148  * (commit 765927b2). Callers should free their own references.
 149  *
 150  * Prior versions expected the caller to increment the references.
 151  * The references are retained on success and freed on error.
 152  */
 153 static inline struct file *ll_dentry_open(struct path *path, int flags,
 154                                           const struct cred *cred)
 155 {
 156         mntget(path->mnt);
 157         dget(path->dentry);
 158 # ifdef HAVE_DENTRY_OPEN_4ARGS
 159         return dentry_open(path->dentry, path->mnt, flags, cred);
 160 # else
 161         return dentry_open(path->dentry, path->mnt, flags);
 162 # endif
 163 }
 164 #endif
 165
 166 #ifdef HAVE_SECURITY_PLUG
 167 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 168                 vfs_symlink(dir, dentry, mnt, path, mode)
 169 #else
 170 #ifdef HAVE_4ARGS_VFS_SYMLINK
 171 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 172                 vfs_symlink(dir, dentry, path, mode)
 173 #else
 174 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 175                        vfs_symlink(dir, dentry, path)
 176 #endif
 177
 178 #endif
 179
 180 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
 181 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
 182                 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
 183 #else
 184 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
 185                 generic_file_llseek_size(file, offset, origin, maxbytes);
 186 #endif
 187
 188 #ifdef HAVE_INODE_DIO_WAIT
 189 /* inode_dio_wait(i) use as-is for write lock */
 190 # define inode_dio_write_done(i)        do {} while (0) /* for write unlock */
 191 # define inode_dio_read(i)              atomic_inc(&(i)->i_dio_count)
 192 /* inode_dio_done(i) use as-is for read unlock */
 193 #else
 194 # define inode_dio_wait(i)              down_write(&(i)->i_alloc_sem)
 195 # define inode_dio_write_done(i)        up_write(&(i)->i_alloc_sem)
 196 # define inode_dio_read(i)              down_read(&(i)->i_alloc_sem)
 197 # define inode_dio_done(i)              up_read(&(i)->i_alloc_sem)
 198 #endif
 199
 200 #ifdef HAVE_RW_TREE_LOCK
 201 #define TREE_READ_LOCK_IRQ(mapping)     read_lock_irq(&(mapping)->tree_lock)
 202 #define TREE_READ_UNLOCK_IRQ(mapping)   read_unlock_irq(&(mapping)->tree_lock)
 203 #else
 204 #define TREE_READ_LOCK_IRQ(mapping)     spin_lock_irq(&(mapping)->tree_lock)
 205 #define TREE_READ_UNLOCK_IRQ(mapping)   spin_unlock_irq(&(mapping)->tree_lock)
 206 #endif
 207
 208 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
 209 #define ll_unregister_blkdev(a,b)       unregister_blkdev((a),(b))
 210 #else
 211 static inline
 212 int ll_unregister_blkdev(unsigned int dev, const char *name)
 213 {
 214         unregister_blkdev(dev, name);
 215         return 0;
 216 }
 217 #endif
 218
 219 #ifdef HAVE_INVALIDATE_BDEV_2ARG
 220 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a),(b))
 221 #else
 222 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 223 #endif
 224
 225 #ifndef FS_HAS_FIEMAP
 226 #define FS_HAS_FIEMAP                   (0)
 227 #endif
 228
 229 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
 230 #define FS_RENAME_DOES_D_MOVE           FS_ODD_RENAME
 231 #endif
 232
 233 #ifndef HAVE_D_OBTAIN_ALIAS
 234 /* The old d_alloc_anon() didn't free the inode reference on error
 235  * like d_obtain_alias().  Hide that difference/inconvenience here. */
 236 static inline struct dentry *d_obtain_alias(struct inode *inode)
 237 {
 238         struct dentry *anon = d_alloc_anon(inode);
 239
 240         if (anon == NULL) {
 241                 iput(inode);
 242                 anon = ERR_PTR(-ENOMEM);
 243         }
 244
 245         return anon;
 246 }
 247 #endif
 248
 249 /* add a lustre compatible layer for crypto API */
 250 #include <linux/crypto.h>
 251 #ifdef HAVE_ASYNC_BLOCK_CIPHER
 252 #define ll_crypto_hash          crypto_hash
 253 #define ll_crypto_cipher        crypto_blkcipher
 254 #define ll_crypto_alloc_hash(name, type, mask)  crypto_alloc_hash(name, type, mask)
 255 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
 256 #define ll_crypto_hash_init(desc)               crypto_hash_init(desc)
 257 #define ll_crypto_hash_update(desc, sl, bytes)  crypto_hash_update(desc, sl, bytes)
 258 #define ll_crypto_hash_final(desc, out)         crypto_hash_final(desc, out)
 259 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 260                 crypto_blkcipher_setkey(tfm, key, keylen)
 261 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 262                 crypto_blkcipher_set_iv(tfm, src, len)
 263 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 264                 crypto_blkcipher_get_iv(tfm, dst, len)
 265 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 266                 crypto_blkcipher_encrypt(desc, dst, src, bytes)
 267 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 268                 crypto_blkcipher_decrypt(desc, dst, src, bytes)
 269 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 270                 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
 271 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 272                 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
 273
 274 static inline
 275 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
 276                                                    u32 type, u32 mask)
 277 {
 278         struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
 279
 280         return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
 281 }
 282
 283 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
 284                                  u8 *key, unsigned int *keylen,
 285                                  struct scatterlist *sg,
 286                                  unsigned int size, u8 *result)
 287 {
 288         struct hash_desc desc;
 289         int              rv;
 290         desc.tfm   = tfm;
 291         desc.flags = 0;
 292         rv = crypto_hash_setkey(desc.tfm, key, *keylen);
 293         if (rv) {
 294                 CERROR("failed to hash setkey: %d\n", rv);
 295                 return rv;
 296         }
 297         return crypto_hash_digest(&desc, sg, size, result);
 298 }
 299 static inline
 300 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
 301 {
 302         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
 303 }
 304 static inline
 305 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
 306 {
 307         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
 308 }
 309
 310 #define ll_crypto_hash_blocksize(tfm)       crypto_hash_blocksize(tfm)
 311 #define ll_crypto_hash_digestsize(tfm)      crypto_hash_digestsize(tfm)
 312 #define ll_crypto_blkcipher_ivsize(tfm)     crypto_blkcipher_ivsize(tfm)
 313 #define ll_crypto_blkcipher_blocksize(tfm)  crypto_blkcipher_blocksize(tfm)
 314 #define ll_crypto_free_hash(tfm)            crypto_free_hash(tfm)
 315 #define ll_crypto_free_blkcipher(tfm)       crypto_free_blkcipher(tfm)
 316 #else /* HAVE_ASYNC_BLOCK_CIPHER */
 317 #include <linux/scatterlist.h>
 318 #define ll_crypto_hash          crypto_tfm
 319 #define ll_crypto_cipher        crypto_tfm
 320 #ifndef HAVE_STRUCT_HASH_DESC
 321 struct hash_desc {
 322         struct ll_crypto_hash *tfm;
 323         u32                    flags;
 324 };
 325 #endif
 326 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
 327 struct blkcipher_desc {
 328         struct ll_crypto_cipher *tfm;
 329         void                    *info;
 330         u32                      flags;
 331 };
 332 #endif
 333 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 334         crypto_cipher_setkey(tfm, key, keylen)
 335 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 336         crypto_cipher_set_iv(tfm, src, len)
 337 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 338         crypto_cipher_get_iv(tfm, dst, len)
 339 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 340         crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
 341 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 342         crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
 343 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 344         crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 345 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 346         crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 347
 348 static inline
 349 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
 350                                                    u32 type, u32 mask)
 351 {
 352         struct ll_crypto_cipher *rtn;
 353         char                     buf[CRYPTO_MAX_ALG_NAME + 1];
 354         const char              *pan = algname;
 355         u32                      flag = 0;
 356
 357         if (strncmp("cbc(", algname, 4) == 0)
 358                 flag |= CRYPTO_TFM_MODE_CBC;
 359         else if (strncmp("ecb(", algname, 4) == 0)
 360                 flag |= CRYPTO_TFM_MODE_ECB;
 361         if (flag) {
 362                 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
 363                 if (vp) {
 364                         memcpy(buf, algname + 4, vp - algname - 4);
 365                         buf[vp - algname - 4] = '\0';
 366                         pan = buf;
 367                 } else {
 368                         flag = 0;
 369                 }
 370         }
 371         rtn = crypto_alloc_tfm(pan, flag);
 372         return (rtn == NULL ?  ERR_PTR(-ENOMEM) : rtn);
 373 }
 374
 375 static inline
 376 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
 377 {
 378         char        buf[CRYPTO_MAX_ALG_NAME + 1];
 379         const char *pan = alg;
 380
 381         if (strncmp("hmac(", alg, 5) == 0) {
 382                 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
 383                 if (vp) {
 384                         memcpy(buf, alg+ 5, vp - alg- 5);
 385                         buf[vp - alg - 5] = 0x00;
 386                         pan = buf;
 387                 }
 388         }
 389         return crypto_alloc_tfm(pan, 0);
 390 }
 391 static inline int ll_crypto_hash_init(struct hash_desc *desc)
 392 {
 393        crypto_digest_init(desc->tfm); return 0;
 394 }
 395 static inline int ll_crypto_hash_update(struct hash_desc *desc,
 396                                         struct scatterlist *sg,
 397                                         unsigned int nbytes)
 398 {
 399         struct scatterlist *sl = sg;
 400         unsigned int        count;
 401                 /*
 402                  * This way is very weakness. We must ensure that
 403                  * the sum of sg[0..i]->length isn't greater than nbytes.
 404                  * In the upstream kernel the crypto_hash_update() also
 405                  * via the nbytes computed the count of sg[...].
 406                  * The old style is more safely. but it gone.
 407                  */
 408         for (count = 0; nbytes > 0; count ++, sl ++) {
 409                 nbytes -= sl->length;
 410         }
 411         crypto_digest_update(desc->tfm, sg, count); return 0;
 412 }
 413 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
 414 {
 415         crypto_digest_final(desc->tfm, out); return 0;
 416 }
 417 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
 418                                  u8 *key, unsigned int *keylen,
 419                                  struct scatterlist *sg,
 420                                  unsigned int nbytes,
 421                                  u8 *out)
 422 {
 423         struct scatterlist *sl = sg;
 424         int                 count;
 425         for (count = 0; nbytes > 0; count ++, sl ++) {
 426                 nbytes -= sl->length;
 427         }
 428         crypto_hmac(tfm, key, keylen, sg, count, out);
 429         return 0;
 430 }
 431
 432 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
 433 #define ll_crypto_blkcipher_blocksize(tfm)      crypto_tfm_alg_blocksize(tfm)
 434 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
 435 #define ll_crypto_hash_digestsize(tfm)  crypto_tfm_alg_digestsize(tfm)
 436 #define ll_crypto_hash_blocksize(tfm)   crypto_tfm_alg_blocksize(tfm)
 437 #define ll_crypto_free_hash(tfm)        crypto_free_tfm(tfm)
 438 #define ll_crypto_free_blkcipher(tfm)   crypto_free_tfm(tfm)
 439 #define ll_crypto_tfm_alg_min_keysize   crypto_tfm_alg_min_keysize
 440 #define ll_crypto_tfm_alg_max_keysize   crypto_tfm_alg_max_keysize
 441 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
 442
 443 #ifdef HAVE_SECURITY_PLUG
 444 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry,mnt)
 445 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mnt,mode)
 446 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,mnt,dir,new,mnt1)
 447 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry,mnt)
 448 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)            \
 449                 vfs_mknod(dir,entry,mnt,mode,dev)
 450 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 451                 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
 452 #else
 453 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry)
 454 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mode)
 455 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,dir,new)
 456 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry)
 457 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)    vfs_mknod(dir,entry,mode,dev)
 458 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 459                 vfs_rename(old,old_dir,new,new_dir)
 460 #endif /* HAVE_SECURITY_PLUG */
 461
 462 #ifdef for_each_possible_cpu
 463 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
 464 #elif defined(for_each_cpu)
 465 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
 466 #endif
 467
 468 #ifdef HAVE_BIO_ENDIO_2ARG
 469 #define cfs_bio_io_error(a,b)   bio_io_error((a))
 470 #define cfs_bio_endio(a,b,c)    bio_endio((a),(c))
 471 #else
 472 #define cfs_bio_io_error(a,b)   bio_io_error((a),(b))
 473 #define cfs_bio_endio(a,b,c)    bio_endio((a),(b),(c))
 474 #endif
 475
 476 #ifdef HAVE_FS_STRUCT_USE_PATH
 477 #define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
 478 #define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
 479 #define cfs_path_put(nd)     path_put(&(nd)->path)
 480 #else
 481 #define cfs_fs_pwd(fs)       ((fs)->pwd)
 482 #define cfs_fs_mnt(fs)       ((fs)->pwdmnt)
 483 #define cfs_path_put(nd)     path_release(nd)
 484 #endif
 485
 486 #ifndef HAVE_SIMPLE_SETATTR
 487 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
 488 #endif
 489
 490 #ifndef SLAB_DESTROY_BY_RCU
 491 #define SLAB_DESTROY_BY_RCU 0
 492 #endif
 493
 494 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
 495 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
 496 #endif
 497
 498 #ifndef HAVE_SB_ANY_QUOTA_LOADED
 499 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
 500 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
 501 # else
 502 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
 503 # endif
 504 #endif
 505
 506 static inline int
 507 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
 508 {
 509         int rc;
 510
 511         if (sb->s_qcop->quota_on) {
 512 #ifdef HAVE_QUOTA_ON_USE_PATH
 513                 struct path path;
 514
 515                 rc = kern_path(name, LOOKUP_FOLLOW, &path);
 516                 if (!rc)
 517                         return rc;
 518 #endif
 519                 rc = sb->s_qcop->quota_on(sb, off, ver
 520 #ifdef HAVE_QUOTA_ON_USE_PATH
 521                                             , &path
 522 #else
 523                                             , name
 524 #endif
 525 #ifdef HAVE_QUOTA_ON_5ARGS
 526                                             , remount
 527 #endif
 528                                            );
 529 #ifdef HAVE_QUOTA_ON_USE_PATH
 530                 path_put(&path);
 531 #endif
 532                 return rc;
 533         }
 534         else
 535                 return -ENOSYS;
 536 }
 537
 538 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
 539 {
 540         if (sb->s_qcop->quota_off) {
 541                 return sb->s_qcop->quota_off(sb, off
 542 #ifdef HAVE_QUOTA_OFF_3ARGS
 543                                              , remount
 544 #endif
 545                                             );
 546         }
 547         else
 548                 return -ENOSYS;
 549 }
 550
 551 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
 552 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
 553 #endif
 554
 555 #ifndef HAVE_DQUOT_SUSPEND
 556 #ifndef HAVE_VFS_DQ_OFF
 557 # define ll_vfs_dq_init             DQUOT_INIT
 558 # define ll_vfs_dq_drop             DQUOT_DROP
 559 # define ll_vfs_dq_transfer         DQUOT_TRANSFER
 560 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
 561 #else
 562 # define ll_vfs_dq_init             vfs_dq_init
 563 # define ll_vfs_dq_drop             vfs_dq_drop
 564 # define ll_vfs_dq_transfer         vfs_dq_transfer
 565 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
 566 #endif
 567 #else
 568 # define ll_vfs_dq_init             dquot_initialize
 569 # define ll_vfs_dq_drop             dquot_drop
 570 # define ll_vfs_dq_transfer         dquot_transfer
 571 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
 572 #endif
 573
 574 #ifndef HAVE_BDI_INIT
 575 #define bdi_init(bdi)    0
 576 #define bdi_destroy(bdi) do { } while (0)
 577 #endif
 578
 579 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
 580 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
 581 #endif
 582
 583 #ifndef HAVE_BLKDEV_GET_BY_DEV
 584 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
 585 #endif
 586
 587 #ifndef HAVE_REQUEST_QUEUE_LIMITS
 588 #define queue_max_sectors(rq)             ((rq)->max_sectors)
 589 #define queue_max_hw_sectors(rq)          ((rq)->max_hw_sectors)
 590 #define queue_max_phys_segments(rq)       ((rq)->max_phys_segments)
 591 #define queue_max_hw_segments(rq)         ((rq)->max_hw_segments)
 592 #endif
 593
 594 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
 595 #define blk_queue_max_segments(rq, seg)                      \
 596         do { blk_queue_max_phys_segments(rq, seg);           \
 597              blk_queue_max_hw_segments(rq, seg); } while (0)
 598 #else
 599 #define queue_max_phys_segments(rq)       queue_max_segments(rq)
 600 #define queue_max_hw_segments(rq)         queue_max_segments(rq)
 601 #endif
 602
 603 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
 604 #define ll_kmap_atomic(a, b)    kmap_atomic(a)
 605 #define ll_kunmap_atomic(a, b)  kunmap_atomic(a)
 606 #else
 607 #define ll_kmap_atomic(a, b)    kmap_atomic(a, b)
 608 #define ll_kunmap_atomic(a, b)  kunmap_atomic(a, b)
 609 #endif
 610
 611 #ifndef HAVE_CLEAR_INODE
 612 #define clear_inode(i)          end_writeback(i)
 613 #endif
 614
 615 #ifdef HAVE_DENTRY_D_ALIAS_HLIST
 616 #define ll_d_hlist_node hlist_node
 617 #define ll_d_hlist_empty(list) hlist_empty(list)
 618 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
 619 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
 620 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
 621         hlist_for_each_entry(dentry, p, i_dentry, alias)
 622 #else
 623 #define ll_d_hlist_node list_head
 624 #define ll_d_hlist_empty(list) list_empty(list)
 625 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
 626 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
 627 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
 628         p = NULL; list_for_each_entry(dentry, i_dentry, alias)
 629 #endif
 630
 631
 632 #ifndef HAVE_BI_HW_SEGMENTS
 633 #define bio_hw_segments(q, bio) 0
 634 #endif
 635
 636 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
 637 #define pagevec_lru_add_file pagevec_lru_add
 638 #endif
 639
 640 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
 641 #define ll_pagevec_init(pv, cold)       do {} while (0)
 642 #define ll_pagevec_add(pv, pg)          (0)
 643 #define ll_pagevec_lru_add_file(pv)     do {} while (0)
 644 #else
 645 #define add_to_page_cache_lru(pg, mapping, off, gfp) \
 646         add_to_page_cache(pg, mapping, off, gfp)
 647 #define ll_pagevec_init(pv, cold)       pagevec_init(pv, cold);
 648 #define ll_pagevec_add(pv, pg)                                  \
 649 ({                                                              \
 650         int __ret;                                              \
 651                                                                 \
 652         page_cache_get(pg);                                     \
 653         __ret = pagevec_add(pv, pg);                            \
 654 })
 655 #define ll_pagevec_lru_add_file(pv)     pagevec_lru_add_file(pv)
 656 #endif
 657
 658 #if !defined(HAVE_CPUMASK_OF_NODE) && defined(HAVE_NODE_TO_CPUMASK)
 659 # ifdef HAVE_OFED_CPUMASK_OF_NODE
 660 # undef cpumask_of_node
 661 # define HAVE_CPUMASK_OF_NODE
 662 # endif
 663 #define cpumask_of_node(i)      (&node_to_cpumask(i))
 664 #endif
 665
 666 #ifndef QUOTA_OK
 667 # define QUOTA_OK 0
 668 #endif
 669 #ifndef NO_QUOTA
 670 # define NO_QUOTA (-EDQUOT)
 671 #endif
 672
 673 #ifndef SEEK_DATA
 674 #define SEEK_DATA      3       /* seek to the next data */
 675 #endif
 676 #ifndef SEEK_HOLE
 677 #define SEEK_HOLE      4       /* seek to the next hole */
 678 #endif
 679
 680 #ifndef FMODE_UNSIGNED_OFFSET
 681 #define FMODE_UNSIGNED_OFFSET   ((__force fmode_t)0x2000)
 682 #endif
 683
 684 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
 685 # define ext2_set_bit             __test_and_set_bit_le
 686 # define ext2_clear_bit           __test_and_clear_bit_le
 687 # define ext2_test_bit            test_bit_le
 688 # define ext2_find_first_zero_bit find_first_zero_bit_le
 689 # define ext2_find_next_zero_bit  find_next_zero_bit_le
 690 #endif
 691
 692 #ifdef ATTR_TIMES_SET
 693 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 694 #else
 695 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
 696 #endif
 697
 698 #ifndef HAVE_SELINUX_IS_ENABLED
 699 static inline bool selinux_is_enabled(void)
 700 {
 701         return 0;
 702 }
 703 #endif
 704
 705 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
 706 # define lm_compare_owner       fl_compare_owner
 707 #endif
 708
 709 /*
 710  * After 3.1, kernel's nameidata.intent.open.flags is different
 711  * with lustre's lookup_intent.it_flags, as lustre's it_flags'
 712  * lower bits equal to FMODE_xxx while kernel doesn't transliterate
 713  * lower bits of nameidata.intent.open.flags to FMODE_xxx.
 714  * */
 715 #include <linux/version.h>
 716 static inline int ll_namei_to_lookup_intent_flag(int flag)
 717 {
 718 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
 719         flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
 720 #endif
 721         return flag;
 722 }
 723
 724 #ifdef HAVE_VOID_MAKE_REQUEST_FN
 725 # define ll_mrf_ret void
 726 # define LL_MRF_RETURN(rc)
 727 #else
 728 # define ll_mrf_ret int
 729 # define LL_MRF_RETURN(rc) RETURN(rc)
 730 #endif
 731
 732 #include <linux/fs.h>
 733 #ifndef HAVE_PROTECT_I_NLINK
 734 static inline void set_nlink(struct inode *inode, unsigned int nlink)
 735 {
 736         inode->i_nlink = nlink;
 737 }
 738 #endif
 739
 740 #ifdef HAVE_INODEOPS_USE_UMODE_T
 741 # define ll_umode_t     umode_t
 742 #else
 743 # define ll_umode_t     int
 744 #endif
 745
 746 #include <linux/dcache.h>
 747 #ifndef HAVE_D_MAKE_ROOT
 748 static inline struct dentry *d_make_root(struct inode *root)
 749 {
 750         struct dentry *res = d_alloc_root(root);
 751
 752         if (res == NULL && root)
 753                 iput(root);
 754
 755         return res;
 756 }
 757 #endif
 758
 759 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
 760 # define ll_dirty_inode(inode, flag)    (inode)->i_sb->s_op->dirty_inode((inode), flag)
 761 #else
 762 # define ll_dirty_inode(inode, flag)    (inode)->i_sb->s_op->dirty_inode((inode))
 763 #endif
 764
 765 #endif /* _COMPAT25_H */