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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef _LUSTRE_COMPAT_H
34 #define _LUSTRE_COMPAT_H
36 #include <linux/aio.h>
38 #include <linux/fs_struct.h>
39 #include <linux/namei.h>
40 #include <linux/pagemap.h>
41 #include <linux/bio.h>
42 #include <linux/xattr.h>
43 #include <linux/workqueue.h>
44 #include <linux/blkdev.h>
46 #include <libcfs/linux/linux-fs.h>
47 #include <lustre_patchless_compat.h>
48 #include <obd_support.h>
50 #ifdef HAVE_FS_STRUCT_RWLOCK
51 # define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
52 # define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
54 # define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
55 # define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
58 #ifdef HAVE_FS_STRUCT_SEQCOUNT
59 # define WRITE_FS_SEQ_BEGIN(fs) write_seqcount_begin(&(fs)->seq)
60 # define WRITE_FS_SEQ_END(fs) write_seqcount_end(&(fs)->seq)
62 # define WRITE_FS_SEQ_BEGIN(fs)
63 # define WRITE_FS_SEQ_END(fs)
65 static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
66 struct dentry *dentry)
75 WRITE_FS_SEQ_BEGIN(fs);
85 #define current_ngroups current_cred()->group_info->ngroups
86 #define current_groups current_cred()->group_info->small_block
89 * OBD need working random driver, thus all our
90 * initialization routines must be called after device
91 * driver initialization
95 #define module_init(a) late_initcall(a)
98 #ifndef MODULE_ALIAS_FS
99 #define MODULE_ALIAS_FS(name)
102 #ifdef HAVE_GENERIC_PERMISSION_2ARGS
103 # define ll_generic_permission(inode, mask, flags, check_acl) \
104 generic_permission(inode, mask)
105 #elif defined HAVE_GENERIC_PERMISSION_4ARGS
106 # define ll_generic_permission(inode, mask, flags, check_acl) \
107 generic_permission(inode, mask, flags, check_acl)
109 # define ll_generic_permission(inode, mask, flags, check_acl) \
110 generic_permission(inode, mask, check_acl)
113 #ifdef HAVE_4ARGS_VFS_SYMLINK
114 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
115 vfs_symlink(dir, dentry, path, mode)
117 #define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
118 vfs_symlink(dir, dentry, path)
121 #if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
122 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
123 generic_file_llseek_size(file, offset, origin, maxbytes, eof);
125 #define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
126 generic_file_llseek_size(file, offset, origin, maxbytes);
129 #ifdef HAVE_INODE_DIO_WAIT
130 /* inode_dio_wait(i) use as-is for write lock */
131 # define inode_dio_write_done(i) do {} while (0) /* for write unlock */
133 # define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
134 # define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
137 #ifndef FS_HAS_FIEMAP
138 #define FS_HAS_FIEMAP (0)
141 #ifndef HAVE_SIMPLE_SETATTR
142 #define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
145 #ifndef SLAB_DESTROY_BY_RCU
146 #define SLAB_DESTROY_BY_RCU 0
149 #ifndef HAVE_INIT_LIST_HEAD_RCU
150 static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
152 WRITE_ONCE(list->next, list);
153 WRITE_ONCE(list->prev, list);
157 #ifndef HAVE_DQUOT_SUSPEND
158 # define ll_vfs_dq_init vfs_dq_init
159 # define ll_vfs_dq_drop vfs_dq_drop
160 # define ll_vfs_dq_transfer vfs_dq_transfer
161 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
163 # define ll_vfs_dq_init dquot_initialize
164 # define ll_vfs_dq_drop dquot_drop
165 # define ll_vfs_dq_transfer dquot_transfer
166 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
169 #ifndef HAVE_BLKDEV_GET_BY_DEV
170 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
173 #ifdef HAVE_BVEC_ITER
174 #define bio_idx(bio) (bio->bi_iter.bi_idx)
175 #define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
176 #define bvl_to_page(bvl) (bvl->bv_page)
178 #define bio_idx(bio) (bio->bi_idx)
179 #define bio_set_sector(bio, sector) (bio->bi_sector = sector)
180 #define bio_sectors(bio) ((bio)->bi_size >> 9)
181 #ifndef HAVE_BIO_END_SECTOR
182 #define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
184 #define bvl_to_page(bvl) (bvl->bv_page)
187 #ifdef HAVE_BVEC_ITER
188 #define bio_start_sector(bio) (bio->bi_iter.bi_sector)
190 #define bio_start_sector(bio) (bio->bi_sector)
193 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
194 #define blk_queue_max_segments(rq, seg) \
195 do { blk_queue_max_phys_segments(rq, seg); \
196 blk_queue_max_hw_segments(rq, seg); } while (0)
198 #define queue_max_phys_segments(rq) queue_max_segments(rq)
199 #define queue_max_hw_segments(rq) queue_max_segments(rq)
203 #define DECLARE_PLUG(plug) struct blk_plug plug
204 #else /* !HAVE_BLK_PLUG */
205 #define DECLARE_PLUG(name)
206 #define blk_start_plug(plug) do {} while (0)
207 #define blk_finish_plug(plug) do {} while (0)
210 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
211 #define ll_kmap_atomic(a, b) kmap_atomic(a)
212 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
214 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
215 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
218 #ifndef HAVE_CLEAR_INODE
219 #define clear_inode(i) end_writeback(i)
222 #ifndef HAVE_DENTRY_D_CHILD
223 #define d_child d_u.d_child
226 #ifdef HAVE_DENTRY_D_U_D_ALIAS
227 #define d_alias d_u.d_alias
230 #ifndef DATA_FOR_LLITE_IS_LIST
231 #define ll_d_hlist_node hlist_node
232 #define ll_d_hlist_empty(list) hlist_empty(list)
233 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
234 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
235 # ifdef HAVE_HLIST_FOR_EACH_3ARG
236 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
237 p = NULL; hlist_for_each_entry(dentry, i_dentry, d_alias)
239 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
240 hlist_for_each_entry(dentry, p, i_dentry, d_alias)
242 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
244 #define ll_d_hlist_node list_head
245 #define ll_d_hlist_empty(list) list_empty(list)
246 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
247 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
248 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
249 list_for_each_entry(dentry, i_dentry, d_alias)
250 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
251 #endif /* !DATA_FOR_LLITE_IS_LIST */
257 # define NO_QUOTA (-EDQUOT)
261 #define SEEK_DATA 3 /* seek to the next data */
264 #define SEEK_HOLE 4 /* seek to the next hole */
267 #ifndef FMODE_UNSIGNED_OFFSET
268 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
271 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
272 # define ext2_set_bit __test_and_set_bit_le
273 # define ext2_clear_bit __test_and_clear_bit_le
274 # define ext2_test_bit test_bit_le
275 # define ext2_find_first_zero_bit find_first_zero_bit_le
276 # define ext2_find_next_zero_bit find_next_zero_bit_le
279 #ifdef ATTR_TIMES_SET
280 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
282 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
285 #ifndef XATTR_NAME_POSIX_ACL_ACCESS
286 # define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
289 #ifndef XATTR_NAME_POSIX_ACL_DEFAULT
290 # define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
293 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
294 # define lm_compare_owner fl_compare_owner
298 * After 3.1, kernel's nameidata.intent.open.flags is different
299 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
300 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
301 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
303 #include <linux/version.h>
304 static inline int ll_namei_to_lookup_intent_flag(int flag)
306 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
307 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
312 #include <linux/fs.h>
313 #ifndef HAVE_PROTECT_I_NLINK
314 static inline void set_nlink(struct inode *inode, unsigned int nlink)
316 inode->i_nlink = nlink;
320 #ifdef HAVE_INODEOPS_USE_UMODE_T
321 # define ll_umode_t umode_t
323 # define ll_umode_t int
326 #include <linux/dcache.h>
327 #ifndef HAVE_D_MAKE_ROOT
328 static inline struct dentry *d_make_root(struct inode *root)
330 struct dentry *res = d_alloc_root(root);
332 if (res == NULL && root)
339 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
340 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
342 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
345 #ifdef HAVE_FILE_F_INODE
346 # define set_file_inode(file, inode) (file)->f_inode = inode
348 # define set_file_inode(file, inode)
351 #ifndef HAVE_FILE_INODE
352 static inline struct inode *file_inode(const struct file *file)
354 return file->f_path.dentry->d_inode;
358 #ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
359 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
361 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
364 #ifdef HAVE_VFS_RENAME_5ARGS
365 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
366 #elif defined HAVE_VFS_RENAME_6ARGS
367 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
369 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
372 #ifdef HAVE_VFS_UNLINK_3ARGS
373 #define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
375 #define ll_vfs_unlink(a, b) vfs_unlink(a, b)
378 #ifndef HAVE_INODE_LOCK
379 # define inode_lock(inode) mutex_lock(&(inode)->i_mutex)
380 # define inode_unlock(inode) mutex_unlock(&(inode)->i_mutex)
381 # define inode_trylock(inode) mutex_trylock(&(inode)->i_mutex)
384 #ifndef HAVE_RADIX_EXCEPTION_ENTRY
385 static inline int radix_tree_exceptional_entry(void *arg)
391 #ifndef HAVE_TRUNCATE_INODE_PAGES_FINAL
392 static inline void truncate_inode_pages_final(struct address_space *map)
394 truncate_inode_pages(map, 0);
398 #ifndef HAVE_PTR_ERR_OR_ZERO
399 static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
409 #define SIZE_MAX (~(size_t)0)
412 #ifdef HAVE_SECURITY_IINITSEC_CALLBACK
413 # define ll_security_inode_init_security(inode, dir, name, value, len, \
414 initxattrs, dentry) \
415 security_inode_init_security(inode, dir, &((dentry)->d_name), \
417 #elif defined HAVE_SECURITY_IINITSEC_QSTR
418 # define ll_security_inode_init_security(inode, dir, name, value, len, \
419 initxattrs, dentry) \
420 security_inode_init_security(inode, dir, &((dentry)->d_name), \
422 #else /* !HAVE_SECURITY_IINITSEC_CALLBACK && !HAVE_SECURITY_IINITSEC_QSTR */
423 # define ll_security_inode_init_security(inode, dir, name, value, len, \
424 initxattrs, dentry) \
425 security_inode_init_security(inode, dir, name, value, len)
428 #ifndef bio_for_each_segment_all /* since kernel version 3.9 */
429 #ifdef HAVE_BVEC_ITER
430 #define bio_for_each_segment_all(bv, bio, it) \
431 for (it = 0, bv = (bio)->bi_io_vec; it < (bio)->bi_vcnt; it++, bv++)
433 #define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
437 #ifdef HAVE_PID_NS_FOR_CHILDREN
438 # define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns_for_children)
440 # define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns)
443 #ifdef HAVE_FULL_NAME_HASH_3ARGS
444 # define ll_full_name_hash(salt, name, len) full_name_hash(salt, name, len)
446 # define ll_full_name_hash(salt, name, len) full_name_hash(name, len)
449 #ifdef HAVE_STRUCT_POSIX_ACL_XATTR
450 # define posix_acl_xattr_header struct posix_acl_xattr_header
451 # define posix_acl_xattr_entry struct posix_acl_xattr_entry
452 # define GET_POSIX_ACL_XATTR_ENTRY(head) ((void *)((head) + 1))
454 # define GET_POSIX_ACL_XATTR_ENTRY(head) ((head)->a_entries)
457 #ifdef HAVE_IOP_XATTR
458 #ifdef HAVE_XATTR_HANDLER_FLAGS
459 #define ll_setxattr generic_setxattr
460 #define ll_getxattr generic_getxattr
461 #define ll_removexattr generic_removexattr
463 int ll_setxattr(struct dentry *dentry, const char *name,
464 const void *value, size_t size, int flags);
465 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
466 void *buf, size_t buf_size);
467 int ll_removexattr(struct dentry *dentry, const char *name);
468 #endif /* ! HAVE_XATTR_HANDLER_FLAGS */
469 #endif /* HAVE_IOP_XATTR */
471 #ifndef HAVE_VFS_SETXATTR
472 const struct xattr_handler *get_xattr_type(const char *name);
475 __vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
476 const void *value, size_t size, int flags)
478 # ifdef HAVE_XATTR_HANDLER_FLAGS
479 const struct xattr_handler *handler;
482 handler = get_xattr_type(name);
486 # if defined(HAVE_XATTR_HANDLER_INODE_PARAM)
487 rc = handler->set(handler, dentry, inode, name, value, size, flags);
488 # elif defined(HAVE_XATTR_HANDLER_SIMPLIFIED)
489 rc = handler->set(handler, dentry, name, value, size, flags);
491 rc = handler->set(dentry, name, value, size, flags, handler->flags);
492 # endif /* !HAVE_XATTR_HANDLER_INODE_PARAM */
494 # else /* !HAVE_XATTR_HANDLER_FLAGS */
495 return ll_setxattr(dentry, name, value, size, flags);
496 # endif /* HAVE_XATTR_HANDLER_FLAGS */
498 #endif /* HAVE_VFS_SETXATTR */
500 #ifdef HAVE_IOP_SET_ACL
501 #ifdef CONFIG_FS_POSIX_ACL
502 #ifndef HAVE_POSIX_ACL_UPDATE_MODE
503 static inline int posix_acl_update_mode(struct inode *inode, umode_t *mode_p,
504 struct posix_acl **acl)
506 umode_t mode = inode->i_mode;
509 error = posix_acl_equiv_mode(*acl, &mode);
514 if (!in_group_p(inode->i_gid) &&
515 !capable_wrt_inode_uidgid(inode, CAP_FSETID))
520 #endif /* HAVE_POSIX_ACL_UPDATE_MODE */
524 #ifndef HAVE_IOV_ITER_TRUNCATE
525 static inline void iov_iter_truncate(struct iov_iter *i, u64 count)
527 if (i->count > count)
533 static inline bool is_sxid(umode_t mode)
535 return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
540 #define IS_NOSEC(inode) (!is_sxid(inode->i_mode))
544 static inline void inode_has_no_xattr(struct inode *inode)
550 #ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
551 static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
556 static inline struct iovec iov_iter_iovec(const struct iov_iter *iter)
558 return (struct iovec) {
559 .iov_base = iter->iov->iov_base + iter->iov_offset,
560 .iov_len = min(iter->count,
561 iter->iov->iov_len - iter->iov_offset),
565 #define iov_for_each(iov, iter, start) \
566 for (iter = (start); \
567 (iter).count && ((iov = iov_iter_iovec(&(iter))), 1); \
568 iov_iter_advance(&(iter), (iov).iov_len))
570 static inline ssize_t
571 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
577 iov_for_each(iov, i, *iter) {
580 res = generic_file_aio_read(iocb, &iov, 1, iocb->ki_pos);
588 if (res < iov.iov_len)
593 iov_iter_advance(iter, bytes);
597 static inline ssize_t
598 __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
604 /* Since LLITE updates file size at the end of I/O in
605 * vvp_io_commit_write(), append write has to be done in atomic when
606 * there are multiple segments because otherwise each iteration to
607 * __generic_file_aio_write() will see original file size */
608 if (unlikely(iocb->ki_filp->f_flags & O_APPEND && iter->nr_segs > 1)) {
609 struct iovec *iov_copy;
612 OBD_ALLOC(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
616 iov_for_each(iov, i, *iter)
617 iov_copy[count++] = iov;
619 bytes = __generic_file_aio_write(iocb, iov_copy, count,
621 OBD_FREE(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
624 iov_iter_advance(iter, bytes);
628 iov_for_each(iov, i, *iter) {
631 res = __generic_file_aio_write(iocb, &iov, 1, &iocb->ki_pos);
639 if (res < iov.iov_len)
644 iov_iter_advance(iter, bytes);
647 #endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
649 static inline void __user *get_vmf_address(struct vm_fault *vmf)
651 #ifdef HAVE_VM_FAULT_ADDRESS
652 return (void __user *)vmf->address;
654 return vmf->virtual_address;
658 #ifdef HAVE_VM_OPS_USE_VM_FAULT_ONLY
659 # define ll_filemap_fault(vma, vmf) filemap_fault(vmf)
661 # define ll_filemap_fault(vma, vmf) filemap_fault(vma, vmf)
664 #ifndef HAVE_CURRENT_TIME
665 static inline struct timespec current_time(struct inode *inode)
673 * time_after32 - compare two 32-bit relative times
674 * @a: the time which may be after @b
675 * @b: the time which may be before @a
677 * time_after32(a, b) returns true if the time @a is after time @b.
678 * time_before32(b, a) returns true if the time @b is before time @a.
680 * Similar to time_after(), compare two 32-bit timestamps for relative
681 * times. This is useful for comparing 32-bit seconds values that can't
682 * be converted to 64-bit values (e.g. due to disk format or wire protocol
683 * issues) when it is known that the times are less than 68 years apart.
685 #define time_after32(a, b) ((s32)((u32)(b) - (u32)(a)) < 0)
686 #define time_before32(b, a) time_after32(a, b)
694 #ifndef alloc_workqueue
695 #define alloc_workqueue(name, flags, max_active) create_workqueue(name)
699 #define READ_ONCE ACCESS_ONCE
702 #ifdef HAVE_BLK_INTEGRITY_ENABLED
703 static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
705 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
706 return bi->interval_exp ? 1 << bi->interval_exp : 0;
707 #elif defined(HAVE_INTERVAL_BLK_INTEGRITY)
710 return bi->sector_size;
714 static inline const char *blk_integrity_name(struct blk_integrity *bi)
716 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
717 return bi->profile->name;
723 static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
727 static inline const char *blk_integrity_name(struct blk_integrity *bi)
729 /* gcc8 dislikes when strcmp() is called against NULL */
734 static inline unsigned int bip_size(struct bio_integrity_payload *bip)
736 #ifdef HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
737 return bip->bip_iter.bi_size;
739 return bip->bip_size;
743 #ifdef HAVE_BLK_INTEGRITY_ENABLED
744 #ifndef INTEGRITY_FLAG_READ
745 #define INTEGRITY_FLAG_READ BLK_INTEGRITY_VERIFY
748 #ifndef INTEGRITY_FLAG_WRITE
749 #define INTEGRITY_FLAG_WRITE BLK_INTEGRITY_GENERATE
752 static inline bool bdev_integrity_enabled(struct block_device *bdev, int rw)
754 struct blk_integrity *bi = bdev_get_integrity(bdev);
759 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
760 if (rw == 0 && bi->profile->verify_fn != NULL &&
761 (bi->flags & INTEGRITY_FLAG_READ))
764 if (rw == 1 && bi->profile->generate_fn != NULL &&
765 (bi->flags & INTEGRITY_FLAG_WRITE))
768 if (rw == 0 && bi->verify_fn != NULL &&
769 (bi->flags & INTEGRITY_FLAG_READ))
772 if (rw == 1 && bi->generate_fn != NULL &&
773 (bi->flags & INTEGRITY_FLAG_WRITE))
780 static inline bool bdev_integrity_enabled(struct block_device *bdev, int rw)
784 #endif /* HAVE_BLK_INTEGRITY_ENABLED */
786 #ifdef HAVE_PAGEVEC_INIT_ONE_PARAM
787 #define ll_pagevec_init(pvec, n) pagevec_init(pvec)
789 #define ll_pagevec_init(pvec, n) pagevec_init(pvec, n)
792 #endif /* _LUSTRE_COMPAT_H */