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, 2012, 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 static inline struct file *ll_dentry_open(struct dentry *dentry,
 144                                           struct vfsmount *mnt, int flags,
 145                                           const struct cred *cred)
 146 {
 147 #ifdef HAVE_DENTRY_OPEN_USE_PATH
 148         struct path path = { .mnt = mnt, .dentry = dentry };
 149         return dentry_open(&path, flags, cred);
 150 #elif defined HAVE_DENTRY_OPEN_4ARGS
 151         return dentry_open(dentry, mnt, flags, cred);
 152 #else
 153         return dentry_open(dentry, mnt, flags);
 154 #endif
 155 }
 156
 157 #ifdef HAVE_SECURITY_PLUG
 158 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 159                 vfs_symlink(dir, dentry, mnt, path, mode)
 160 #else
 161 #ifdef HAVE_4ARGS_VFS_SYMLINK
 162 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 163                 vfs_symlink(dir, dentry, path, mode)
 164 #else
 165 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
 166                        vfs_symlink(dir, dentry, path)
 167 #endif
 168
 169 #endif
 170
 171 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
 172 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
 173                 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
 174 #else
 175 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
 176                 generic_file_llseek_size(file, offset, origin, maxbytes);
 177 #endif
 178
 179 #ifdef HAVE_INODE_DIO_WAIT
 180 /* inode_dio_wait(i) use as-is for write lock */
 181 # define inode_dio_write_done(i)        do {} while (0) /* for write unlock */
 182 # define inode_dio_read(i)              atomic_inc(&(i)->i_dio_count)
 183 /* inode_dio_done(i) use as-is for read unlock */
 184 #else
 185 # define inode_dio_wait(i)              down_write(&(i)->i_alloc_sem)
 186 # define inode_dio_write_done(i)        up_write(&(i)->i_alloc_sem)
 187 # define inode_dio_read(i)              down_read(&(i)->i_alloc_sem)
 188 # define inode_dio_done(i)              up_read(&(i)->i_alloc_sem)
 189 #endif
 190
 191 #ifdef HAVE_RW_TREE_LOCK
 192 #define TREE_READ_LOCK_IRQ(mapping)     read_lock_irq(&(mapping)->tree_lock)
 193 #define TREE_READ_UNLOCK_IRQ(mapping)   read_unlock_irq(&(mapping)->tree_lock)
 194 #else
 195 #define TREE_READ_LOCK_IRQ(mapping)     spin_lock_irq(&(mapping)->tree_lock)
 196 #define TREE_READ_UNLOCK_IRQ(mapping)   spin_unlock_irq(&(mapping)->tree_lock)
 197 #endif
 198
 199 #ifdef HAVE_UNREGISTER_BLKDEV_RETURN_INT
 200 #define ll_unregister_blkdev(a,b)       unregister_blkdev((a),(b))
 201 #else
 202 static inline
 203 int ll_unregister_blkdev(unsigned int dev, const char *name)
 204 {
 205         unregister_blkdev(dev, name);
 206         return 0;
 207 }
 208 #endif
 209
 210 #ifdef HAVE_INVALIDATE_BDEV_2ARG
 211 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a),(b))
 212 #else
 213 #define ll_invalidate_bdev(a,b)         invalidate_bdev((a))
 214 #endif
 215
 216 #ifndef FS_HAS_FIEMAP
 217 #define FS_HAS_FIEMAP                   (0)
 218 #endif
 219
 220 #ifndef HAVE_FS_RENAME_DOES_D_MOVE
 221 #define FS_RENAME_DOES_D_MOVE           FS_ODD_RENAME
 222 #endif
 223
 224 #ifndef HAVE_D_OBTAIN_ALIAS
 225 /* The old d_alloc_anon() didn't free the inode reference on error
 226  * like d_obtain_alias().  Hide that difference/inconvenience here. */
 227 static inline struct dentry *d_obtain_alias(struct inode *inode)
 228 {
 229         struct dentry *anon = d_alloc_anon(inode);
 230
 231         if (anon == NULL) {
 232                 iput(inode);
 233                 anon = ERR_PTR(-ENOMEM);
 234         }
 235
 236         return anon;
 237 }
 238 #endif
 239
 240 /* add a lustre compatible layer for crypto API */
 241 #include <linux/crypto.h>
 242 #ifdef HAVE_ASYNC_BLOCK_CIPHER
 243 #define ll_crypto_hash          crypto_hash
 244 #define ll_crypto_cipher        crypto_blkcipher
 245 #define ll_crypto_alloc_hash(name, type, mask)  crypto_alloc_hash(name, type, mask)
 246 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_hash_setkey(tfm, key, keylen)
 247 #define ll_crypto_hash_init(desc)               crypto_hash_init(desc)
 248 #define ll_crypto_hash_update(desc, sl, bytes)  crypto_hash_update(desc, sl, bytes)
 249 #define ll_crypto_hash_final(desc, out)         crypto_hash_final(desc, out)
 250 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 251                 crypto_blkcipher_setkey(tfm, key, keylen)
 252 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 253                 crypto_blkcipher_set_iv(tfm, src, len)
 254 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 255                 crypto_blkcipher_get_iv(tfm, dst, len)
 256 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 257                 crypto_blkcipher_encrypt(desc, dst, src, bytes)
 258 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 259                 crypto_blkcipher_decrypt(desc, dst, src, bytes)
 260 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 261                 crypto_blkcipher_encrypt_iv(desc, dst, src, bytes)
 262 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 263                 crypto_blkcipher_decrypt_iv(desc, dst, src, bytes)
 264
 265 static inline
 266 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char *name,
 267                                                    u32 type, u32 mask)
 268 {
 269         struct ll_crypto_cipher *rtn = crypto_alloc_blkcipher(name, type, mask);
 270
 271         return (rtn == NULL ? ERR_PTR(-ENOMEM) : rtn);
 272 }
 273
 274 static inline int ll_crypto_hmac(struct ll_crypto_hash *tfm,
 275                                  u8 *key, unsigned int *keylen,
 276                                  struct scatterlist *sg,
 277                                  unsigned int size, u8 *result)
 278 {
 279         struct hash_desc desc;
 280         int              rv;
 281         desc.tfm   = tfm;
 282         desc.flags = 0;
 283         rv = crypto_hash_setkey(desc.tfm, key, *keylen);
 284         if (rv) {
 285                 CERROR("failed to hash setkey: %d\n", rv);
 286                 return rv;
 287         }
 288         return crypto_hash_digest(&desc, sg, size, result);
 289 }
 290 static inline
 291 unsigned int ll_crypto_tfm_alg_max_keysize(struct crypto_blkcipher *tfm)
 292 {
 293         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.max_keysize;
 294 }
 295 static inline
 296 unsigned int ll_crypto_tfm_alg_min_keysize(struct crypto_blkcipher *tfm)
 297 {
 298         return crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher.min_keysize;
 299 }
 300
 301 #define ll_crypto_hash_blocksize(tfm)       crypto_hash_blocksize(tfm)
 302 #define ll_crypto_hash_digestsize(tfm)      crypto_hash_digestsize(tfm)
 303 #define ll_crypto_blkcipher_ivsize(tfm)     crypto_blkcipher_ivsize(tfm)
 304 #define ll_crypto_blkcipher_blocksize(tfm)  crypto_blkcipher_blocksize(tfm)
 305 #define ll_crypto_free_hash(tfm)            crypto_free_hash(tfm)
 306 #define ll_crypto_free_blkcipher(tfm)       crypto_free_blkcipher(tfm)
 307 #else /* HAVE_ASYNC_BLOCK_CIPHER */
 308 #include <linux/scatterlist.h>
 309 #define ll_crypto_hash          crypto_tfm
 310 #define ll_crypto_cipher        crypto_tfm
 311 #ifndef HAVE_STRUCT_HASH_DESC
 312 struct hash_desc {
 313         struct ll_crypto_hash *tfm;
 314         u32                    flags;
 315 };
 316 #endif
 317 #ifndef HAVE_STRUCT_BLKCIPHER_DESC
 318 struct blkcipher_desc {
 319         struct ll_crypto_cipher *tfm;
 320         void                    *info;
 321         u32                      flags;
 322 };
 323 #endif
 324 #define ll_crypto_blkcipher_setkey(tfm, key, keylen) \
 325         crypto_cipher_setkey(tfm, key, keylen)
 326 #define ll_crypto_blkcipher_set_iv(tfm, src, len) \
 327         crypto_cipher_set_iv(tfm, src, len)
 328 #define ll_crypto_blkcipher_get_iv(tfm, dst, len) \
 329         crypto_cipher_get_iv(tfm, dst, len)
 330 #define ll_crypto_blkcipher_encrypt(desc, dst, src, bytes) \
 331         crypto_cipher_encrypt((desc)->tfm, dst, src, bytes)
 332 #define ll_crypto_blkcipher_decrypt(desc, dst, src, bytes) \
 333         crypto_cipher_decrypt((desc)->tfm, dst, src, bytes)
 334 #define ll_crypto_blkcipher_decrypt_iv(desc, dst, src, bytes) \
 335         crypto_cipher_decrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 336 #define ll_crypto_blkcipher_encrypt_iv(desc, dst, src, bytes) \
 337         crypto_cipher_encrypt_iv((desc)->tfm, dst, src, bytes, (desc)->info)
 338
 339 static inline
 340 struct ll_crypto_cipher *ll_crypto_alloc_blkcipher(const char * algname,
 341                                                    u32 type, u32 mask)
 342 {
 343         struct ll_crypto_cipher *rtn;
 344         char                     buf[CRYPTO_MAX_ALG_NAME + 1];
 345         const char              *pan = algname;
 346         u32                      flag = 0;
 347
 348         if (strncmp("cbc(", algname, 4) == 0)
 349                 flag |= CRYPTO_TFM_MODE_CBC;
 350         else if (strncmp("ecb(", algname, 4) == 0)
 351                 flag |= CRYPTO_TFM_MODE_ECB;
 352         if (flag) {
 353                 char *vp = strnchr(algname, CRYPTO_MAX_ALG_NAME, ')');
 354                 if (vp) {
 355                         memcpy(buf, algname + 4, vp - algname - 4);
 356                         buf[vp - algname - 4] = '\0';
 357                         pan = buf;
 358                 } else {
 359                         flag = 0;
 360                 }
 361         }
 362         rtn = crypto_alloc_tfm(pan, flag);
 363         return (rtn == NULL ?  ERR_PTR(-ENOMEM) : rtn);
 364 }
 365
 366 static inline
 367 struct ll_crypto_hash *ll_crypto_alloc_hash(const char *alg, u32 type, u32 mask)
 368 {
 369         char        buf[CRYPTO_MAX_ALG_NAME + 1];
 370         const char *pan = alg;
 371
 372         if (strncmp("hmac(", alg, 5) == 0) {
 373                 char *vp = strnchr(alg, CRYPTO_MAX_ALG_NAME, ')');
 374                 if (vp) {
 375                         memcpy(buf, alg+ 5, vp - alg- 5);
 376                         buf[vp - alg - 5] = 0x00;
 377                         pan = buf;
 378                 }
 379         }
 380         return crypto_alloc_tfm(pan, 0);
 381 }
 382 static inline int ll_crypto_hash_init(struct hash_desc *desc)
 383 {
 384        crypto_digest_init(desc->tfm); return 0;
 385 }
 386 static inline int ll_crypto_hash_update(struct hash_desc *desc,
 387                                         struct scatterlist *sg,
 388                                         unsigned int nbytes)
 389 {
 390         struct scatterlist *sl = sg;
 391         unsigned int        count;
 392                 /*
 393                  * This way is very weakness. We must ensure that
 394                  * the sum of sg[0..i]->length isn't greater than nbytes.
 395                  * In the upstream kernel the crypto_hash_update() also
 396                  * via the nbytes computed the count of sg[...].
 397                  * The old style is more safely. but it gone.
 398                  */
 399         for (count = 0; nbytes > 0; count ++, sl ++) {
 400                 nbytes -= sl->length;
 401         }
 402         crypto_digest_update(desc->tfm, sg, count); return 0;
 403 }
 404 static inline int ll_crypto_hash_final(struct hash_desc *desc, u8 *out)
 405 {
 406         crypto_digest_final(desc->tfm, out); return 0;
 407 }
 408 static inline int ll_crypto_hmac(struct crypto_tfm *tfm,
 409                                  u8 *key, unsigned int *keylen,
 410                                  struct scatterlist *sg,
 411                                  unsigned int nbytes,
 412                                  u8 *out)
 413 {
 414         struct scatterlist *sl = sg;
 415         int                 count;
 416         for (count = 0; nbytes > 0; count ++, sl ++) {
 417                 nbytes -= sl->length;
 418         }
 419         crypto_hmac(tfm, key, keylen, sg, count, out);
 420         return 0;
 421 }
 422
 423 #define ll_crypto_hash_setkey(tfm, key, keylen) crypto_digest_setkey(tfm, key, keylen)
 424 #define ll_crypto_blkcipher_blocksize(tfm)      crypto_tfm_alg_blocksize(tfm)
 425 #define ll_crypto_blkcipher_ivsize(tfm) crypto_tfm_alg_ivsize(tfm)
 426 #define ll_crypto_hash_digestsize(tfm)  crypto_tfm_alg_digestsize(tfm)
 427 #define ll_crypto_hash_blocksize(tfm)   crypto_tfm_alg_blocksize(tfm)
 428 #define ll_crypto_free_hash(tfm)        crypto_free_tfm(tfm)
 429 #define ll_crypto_free_blkcipher(tfm)   crypto_free_tfm(tfm)
 430 #define ll_crypto_tfm_alg_min_keysize   crypto_tfm_alg_min_keysize
 431 #define ll_crypto_tfm_alg_max_keysize   crypto_tfm_alg_max_keysize
 432 #endif /* HAVE_ASYNC_BLOCK_CIPHER */
 433
 434 #ifdef HAVE_SECURITY_PLUG
 435 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry,mnt)
 436 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mnt,mode)
 437 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,mnt,dir,new,mnt1)
 438 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry,mnt)
 439 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)            \
 440                 vfs_mknod(dir,entry,mnt,mode,dev)
 441 #define ll_security_inode_unlink(dir,entry,mnt)         \
 442                 security_inode_unlink(dir,entry,mnt)
 443 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 444                 vfs_rename(old,old_dir,mnt,new,new_dir,mnt1)
 445 #else
 446 #define ll_vfs_rmdir(dir,entry,mnt)             vfs_rmdir(dir,entry)
 447 #define ll_vfs_mkdir(inode,dir,mnt,mode)        vfs_mkdir(inode,dir,mode)
 448 #define ll_vfs_link(old,mnt,dir,new,mnt1)       vfs_link(old,dir,new)
 449 #define ll_vfs_unlink(inode,entry,mnt)          vfs_unlink(inode,entry)
 450 #define ll_vfs_mknod(dir,entry,mnt,mode,dev)    vfs_mknod(dir,entry,mode,dev)
 451 #define ll_security_inode_unlink(dir,entry,mnt) security_inode_unlink(dir,entry)
 452 #define ll_vfs_rename(old,old_dir,mnt,new,new_dir,mnt1) \
 453                 vfs_rename(old,old_dir,new,new_dir)
 454 #endif /* HAVE_SECURITY_PLUG */
 455
 456 #ifdef for_each_possible_cpu
 457 #define cfs_for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
 458 #elif defined(for_each_cpu)
 459 #define cfs_for_each_possible_cpu(cpu) for_each_cpu(cpu)
 460 #endif
 461
 462 #ifdef HAVE_BIO_ENDIO_2ARG
 463 #define cfs_bio_io_error(a,b)   bio_io_error((a))
 464 #define cfs_bio_endio(a,b,c)    bio_endio((a),(c))
 465 #else
 466 #define cfs_bio_io_error(a,b)   bio_io_error((a),(b))
 467 #define cfs_bio_endio(a,b,c)    bio_endio((a),(b),(c))
 468 #endif
 469
 470 #ifdef HAVE_FS_STRUCT_USE_PATH
 471 #define cfs_fs_pwd(fs)       ((fs)->pwd.dentry)
 472 #define cfs_fs_mnt(fs)       ((fs)->pwd.mnt)
 473 #define cfs_path_put(nd)     path_put(&(nd)->path)
 474 #else
 475 #define cfs_fs_pwd(fs)       ((fs)->pwd)
 476 #define cfs_fs_mnt(fs)       ((fs)->pwdmnt)
 477 #define cfs_path_put(nd)     path_release(nd)
 478 #endif
 479
 480 #ifndef HAVE_SIMPLE_SETATTR
 481 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
 482 #endif
 483
 484 #ifndef SLAB_DESTROY_BY_RCU
 485 #define SLAB_DESTROY_BY_RCU 0
 486 #endif
 487
 488 #ifndef HAVE_SB_HAS_QUOTA_ACTIVE
 489 #define sb_has_quota_active(sb, type) sb_has_quota_enabled(sb, type)
 490 #endif
 491
 492 #ifndef HAVE_SB_ANY_QUOTA_LOADED
 493 # ifdef HAVE_SB_ANY_QUOTA_ACTIVE
 494 # define sb_any_quota_loaded(sb) sb_any_quota_active(sb)
 495 # else
 496 # define sb_any_quota_loaded(sb) sb_any_quota_enabled(sb)
 497 # endif
 498 #endif
 499
 500 static inline int
 501 ll_quota_on(struct super_block *sb, int off, int ver, char *name, int remount)
 502 {
 503         int rc;
 504
 505         if (sb->s_qcop->quota_on) {
 506 #ifdef HAVE_QUOTA_ON_USE_PATH
 507                 struct path path;
 508
 509                 rc = kern_path(name, LOOKUP_FOLLOW, &path);
 510                 if (!rc)
 511                         return rc;
 512 #endif
 513                 rc = sb->s_qcop->quota_on(sb, off, ver
 514 #ifdef HAVE_QUOTA_ON_USE_PATH
 515                                             , &path
 516 #else
 517                                             , name
 518 #endif
 519 #ifdef HAVE_QUOTA_ON_5ARGS
 520                                             , remount
 521 #endif
 522                                            );
 523 #ifdef HAVE_QUOTA_ON_USE_PATH
 524                 path_put(&path);
 525 #endif
 526                 return rc;
 527         }
 528         else
 529                 return -ENOSYS;
 530 }
 531
 532 static inline int ll_quota_off(struct super_block *sb, int off, int remount)
 533 {
 534         if (sb->s_qcop->quota_off) {
 535                 return sb->s_qcop->quota_off(sb, off
 536 #ifdef HAVE_QUOTA_OFF_3ARGS
 537                                              , remount
 538 #endif
 539                                             );
 540         }
 541         else
 542                 return -ENOSYS;
 543 }
 544
 545 #ifndef HAVE_BLK_QUEUE_LOG_BLK_SIZE /* added in 2.6.31 */
 546 #define blk_queue_logical_block_size(q, sz) blk_queue_hardsect_size(q, sz)
 547 #endif
 548
 549 #ifndef HAVE_DQUOT_SUSPEND
 550 #ifndef HAVE_VFS_DQ_OFF
 551 # define ll_vfs_dq_init             DQUOT_INIT
 552 # define ll_vfs_dq_drop             DQUOT_DROP
 553 # define ll_vfs_dq_transfer         DQUOT_TRANSFER
 554 # define ll_vfs_dq_off(sb, remount) DQUOT_OFF(sb)
 555 #else
 556 # define ll_vfs_dq_init             vfs_dq_init
 557 # define ll_vfs_dq_drop             vfs_dq_drop
 558 # define ll_vfs_dq_transfer         vfs_dq_transfer
 559 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
 560 #endif
 561 #else
 562 # define ll_vfs_dq_init             dquot_initialize
 563 # define ll_vfs_dq_drop             dquot_drop
 564 # define ll_vfs_dq_transfer         dquot_transfer
 565 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
 566 #endif
 567
 568 #ifndef HAVE_BDI_INIT
 569 #define bdi_init(bdi)    0
 570 #define bdi_destroy(bdi) do { } while (0)
 571 #endif
 572
 573 #ifdef HAVE_BLK_QUEUE_MAX_SECTORS /* removed in rhel6 */
 574 #define blk_queue_max_hw_sectors(q, sect) blk_queue_max_sectors(q, sect)
 575 #endif
 576
 577 #ifndef HAVE_BLKDEV_GET_BY_DEV
 578 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
 579 #endif
 580
 581 #ifndef HAVE_REQUEST_QUEUE_LIMITS
 582 #define queue_max_sectors(rq)             ((rq)->max_sectors)
 583 #define queue_max_hw_sectors(rq)          ((rq)->max_hw_sectors)
 584 #define queue_max_phys_segments(rq)       ((rq)->max_phys_segments)
 585 #define queue_max_hw_segments(rq)         ((rq)->max_hw_segments)
 586 #endif
 587
 588 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
 589 #define blk_queue_max_segments(rq, seg)                      \
 590         do { blk_queue_max_phys_segments(rq, seg);           \
 591              blk_queue_max_hw_segments(rq, seg); } while (0)
 592 #else
 593 #define queue_max_phys_segments(rq)       queue_max_segments(rq)
 594 #define queue_max_hw_segments(rq)         queue_max_segments(rq)
 595 #endif
 596
 597 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
 598 #define ll_kmap_atomic(a, b)    kmap_atomic(a)
 599 #define ll_kunmap_atomic(a, b)  kunmap_atomic(a)
 600 #else
 601 #define ll_kmap_atomic(a, b)    kmap_atomic(a, b)
 602 #define ll_kunmap_atomic(a, b)  kunmap_atomic(a, b)
 603 #endif
 604
 605 #ifndef HAVE_CLEAR_INODE
 606 #define clear_inode(i)          end_writeback(i)
 607 #endif
 608
 609 #ifdef HAVE_DENTRY_D_ALIAS_HLIST
 610 #define ll_d_hlist_node hlist_node
 611 #define ll_d_hlist_empty(list) hlist_empty(list)
 612 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
 613 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
 614 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
 615         hlist_for_each_entry(dentry, p, i_dentry, alias)
 616 #else
 617 #define ll_d_hlist_node list_head
 618 #define ll_d_hlist_empty(list) list_empty(list)
 619 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
 620 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
 621 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry, alias) \
 622         p = NULL; list_for_each_entry(dentry, i_dentry, alias)
 623 #endif
 624
 625
 626 #ifndef HAVE_BI_HW_SEGMENTS
 627 #define bio_hw_segments(q, bio) 0
 628 #endif
 629
 630 #ifndef HAVE_PAGEVEC_LRU_ADD_FILE
 631 #define pagevec_lru_add_file pagevec_lru_add
 632 #endif
 633
 634 #ifdef HAVE_ADD_TO_PAGE_CACHE_LRU
 635 #define ll_pagevec_init(pv, cold)       do {} while (0)
 636 #define ll_pagevec_add(pv, pg)          (0)
 637 #define ll_pagevec_lru_add_file(pv)     do {} while (0)
 638 #else
 639 #define add_to_page_cache_lru(pg, mapping, off, gfp) \
 640         add_to_page_cache(pg, mapping, off, gfp)
 641 #define ll_pagevec_init(pv, cold)       pagevec_init(pv, cold);
 642 #define ll_pagevec_add(pv, pg)                                  \
 643 ({                                                              \
 644         int __ret;                                              \
 645                                                                 \
 646         page_cache_get(pg);                                     \
 647         __ret = pagevec_add(pv, pg);                            \
 648 })
 649 #define ll_pagevec_lru_add_file(pv)     pagevec_lru_add_file(pv)
 650 #endif
 651
 652 #if !defined(HAVE_CPUMASK_OF_NODE) && defined(HAVE_NODE_TO_CPUMASK)
 653 # ifdef HAVE_OFED_CPUMASK_OF_NODE
 654 # undef cpumask_of_node
 655 # define HAVE_CPUMASK_OF_NODE
 656 # endif
 657 #define cpumask_of_node(i)      (&node_to_cpumask(i))
 658 #endif
 659
 660 #ifndef QUOTA_OK
 661 # define QUOTA_OK 0
 662 #endif
 663 #ifndef NO_QUOTA
 664 # define NO_QUOTA (-EDQUOT)
 665 #endif
 666
 667 #ifndef SEEK_DATA
 668 #define SEEK_DATA      3       /* seek to the next data */
 669 #endif
 670 #ifndef SEEK_HOLE
 671 #define SEEK_HOLE      4       /* seek to the next hole */
 672 #endif
 673
 674 #ifndef FMODE_UNSIGNED_OFFSET
 675 #define FMODE_UNSIGNED_OFFSET   ((__force fmode_t)0x2000)
 676 #endif
 677
 678 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
 679 # define ext2_set_bit             __test_and_set_bit_le
 680 # define ext2_clear_bit           __test_and_clear_bit_le
 681 # define ext2_test_bit            test_bit_le
 682 # define ext2_find_first_zero_bit find_first_zero_bit_le
 683 # define ext2_find_next_zero_bit  find_next_zero_bit_le
 684 #endif
 685
 686 #ifdef ATTR_TIMES_SET
 687 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
 688 #else
 689 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
 690 #endif
 691
 692 #ifndef HAVE_SELINUX_IS_ENABLED
 693 static inline bool selinux_is_enabled(void)
 694 {
 695         return 0;
 696 }
 697 #endif
 698
 699 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
 700 # define lm_compare_owner       fl_compare_owner
 701 #endif
 702
 703 /*
 704  * After 3.1, kernel's nameidata.intent.open.flags is different
 705  * with lustre's lookup_intent.it_flags, as lustre's it_flags'
 706  * lower bits equal to FMODE_xxx while kernel doesn't transliterate
 707  * lower bits of nameidata.intent.open.flags to FMODE_xxx.
 708  * */
 709 #include <linux/version.h>
 710 static inline int ll_namei_to_lookup_intent_flag(int flag)
 711 {
 712 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
 713         flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
 714 #endif
 715         return flag;
 716 }
 717
 718 #ifdef HAVE_VOID_MAKE_REQUEST_FN
 719 # define ll_mrf_ret void
 720 # define LL_MRF_RETURN(rc)
 721 #else
 722 # define ll_mrf_ret int
 723 # define LL_MRF_RETURN(rc) RETURN(rc)
 724 #endif
 725
 726 #include <linux/fs.h>
 727 #ifndef HAVE_PROTECT_I_NLINK
 728 static inline void set_nlink(struct inode *inode, unsigned int nlink)
 729 {
 730         inode->i_nlink = nlink;
 731 }
 732 #endif
 733
 734 #ifdef HAVE_INODEOPS_USE_UMODE_T
 735 # define ll_umode_t     umode_t
 736 #else
 737 # define ll_umode_t     int
 738 #endif
 739
 740 #include <linux/dcache.h>
 741 #ifndef HAVE_D_MAKE_ROOT
 742 static inline struct dentry *d_make_root(struct inode *root)
 743 {
 744         struct dentry *res = d_alloc_root(root);
 745
 746         if (res == NULL && root)
 747                 iput(root);
 748
 749         return res;
 750 }
 751 #endif
 752
 753 #endif /* _COMPAT25_H */