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 HAVE_INIT_LIST_HEAD_RCU
146 static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
148 WRITE_ONCE(list->next, list);
149 WRITE_ONCE(list->prev, list);
153 #ifndef HAVE_DQUOT_SUSPEND
154 # define ll_vfs_dq_init vfs_dq_init
155 # define ll_vfs_dq_drop vfs_dq_drop
156 # define ll_vfs_dq_transfer vfs_dq_transfer
157 # define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
159 # define ll_vfs_dq_init dquot_initialize
160 # define ll_vfs_dq_drop dquot_drop
161 # define ll_vfs_dq_transfer dquot_transfer
162 # define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
165 #ifndef HAVE_BLKDEV_GET_BY_DEV
166 # define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
169 #ifdef HAVE_BVEC_ITER
170 #define bio_idx(bio) (bio->bi_iter.bi_idx)
171 #define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
172 #define bvl_to_page(bvl) (bvl->bv_page)
174 #define bio_idx(bio) (bio->bi_idx)
175 #define bio_set_sector(bio, sector) (bio->bi_sector = sector)
176 #define bio_sectors(bio) ((bio)->bi_size >> 9)
177 #ifndef HAVE_BIO_END_SECTOR
178 #define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
180 #define bvl_to_page(bvl) (bvl->bv_page)
183 #ifdef HAVE_BVEC_ITER
184 #define bio_start_sector(bio) (bio->bi_iter.bi_sector)
186 #define bio_start_sector(bio) (bio->bi_sector)
189 #ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
190 #define blk_queue_max_segments(rq, seg) \
191 do { blk_queue_max_phys_segments(rq, seg); \
192 blk_queue_max_hw_segments(rq, seg); } while (0)
194 #define queue_max_phys_segments(rq) queue_max_segments(rq)
195 #define queue_max_hw_segments(rq) queue_max_segments(rq)
199 #define DECLARE_PLUG(plug) struct blk_plug plug
200 #else /* !HAVE_BLK_PLUG */
201 #define DECLARE_PLUG(name)
202 #define blk_start_plug(plug) do {} while (0)
203 #define blk_finish_plug(plug) do {} while (0)
206 #ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
207 #define ll_kmap_atomic(a, b) kmap_atomic(a)
208 #define ll_kunmap_atomic(a, b) kunmap_atomic(a)
210 #define ll_kmap_atomic(a, b) kmap_atomic(a, b)
211 #define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
214 #ifndef HAVE_CLEAR_INODE
215 #define clear_inode(i) end_writeback(i)
218 #ifndef HAVE_DENTRY_D_CHILD
219 #define d_child d_u.d_child
222 #ifdef HAVE_DENTRY_D_U_D_ALIAS
223 #define d_alias d_u.d_alias
226 #ifndef DATA_FOR_LLITE_IS_LIST
227 #define ll_d_hlist_node hlist_node
228 #define ll_d_hlist_empty(list) hlist_empty(list)
229 #define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
230 #define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
231 # ifdef HAVE_HLIST_FOR_EACH_3ARG
232 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
233 p = NULL; hlist_for_each_entry(dentry, i_dentry, d_alias)
235 # define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
236 hlist_for_each_entry(dentry, p, i_dentry, d_alias)
238 #define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
240 #define ll_d_hlist_node list_head
241 #define ll_d_hlist_empty(list) list_empty(list)
242 #define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
243 #define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
244 #define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
245 list_for_each_entry(dentry, i_dentry, d_alias)
246 #define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
247 #endif /* !DATA_FOR_LLITE_IS_LIST */
249 #ifndef HAVE_D_IN_LOOKUP
250 static inline int d_in_lookup(struct dentry *dentry)
260 # define NO_QUOTA (-EDQUOT)
264 #define SEEK_DATA 3 /* seek to the next data */
267 #define SEEK_HOLE 4 /* seek to the next hole */
270 #ifndef FMODE_UNSIGNED_OFFSET
271 #define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
274 #if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
275 # define ext2_set_bit __test_and_set_bit_le
276 # define ext2_clear_bit __test_and_clear_bit_le
277 # define ext2_test_bit test_bit_le
278 # define ext2_find_first_zero_bit find_first_zero_bit_le
279 # define ext2_find_next_zero_bit find_next_zero_bit_le
282 #ifdef ATTR_TIMES_SET
283 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
285 # define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
288 #ifndef XATTR_NAME_POSIX_ACL_ACCESS
289 # define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
292 #ifndef XATTR_NAME_POSIX_ACL_DEFAULT
293 # define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
296 #ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
297 # define lm_compare_owner fl_compare_owner
301 * After 3.1, kernel's nameidata.intent.open.flags is different
302 * with lustre's lookup_intent.it_flags, as lustre's it_flags'
303 * lower bits equal to FMODE_xxx while kernel doesn't transliterate
304 * lower bits of nameidata.intent.open.flags to FMODE_xxx.
306 #include <linux/version.h>
307 static inline int ll_namei_to_lookup_intent_flag(int flag)
309 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
310 flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
315 #include <linux/fs.h>
316 #ifndef HAVE_PROTECT_I_NLINK
317 static inline void set_nlink(struct inode *inode, unsigned int nlink)
319 inode->i_nlink = nlink;
323 #ifdef HAVE_INODEOPS_USE_UMODE_T
324 # define ll_umode_t umode_t
326 # define ll_umode_t int
329 #include <linux/dcache.h>
330 #ifndef HAVE_D_MAKE_ROOT
331 static inline struct dentry *d_make_root(struct inode *root)
333 struct dentry *res = d_alloc_root(root);
335 if (res == NULL && root)
342 #ifdef HAVE_DIRTY_INODE_HAS_FLAG
343 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
345 # define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
348 #ifdef HAVE_FILE_F_INODE
349 # define set_file_inode(file, inode) (file)->f_inode = inode
351 # define set_file_inode(file, inode)
354 #ifndef HAVE_FILE_INODE
355 static inline struct inode *file_inode(const struct file *file)
357 return file->f_path.dentry->d_inode;
361 #ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
362 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
364 #define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
367 #ifdef HAVE_VFS_RENAME_5ARGS
368 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
369 #elif defined HAVE_VFS_RENAME_6ARGS
370 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
372 #define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
375 #ifdef HAVE_VFS_UNLINK_3ARGS
376 #define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
378 #define ll_vfs_unlink(a, b) vfs_unlink(a, b)
381 #ifndef HAVE_INODE_OWNER_OR_CAPABLE
382 #define inode_owner_or_capable(inode) is_owner_or_cap(inode)
385 static inline int ll_vfs_getattr(struct path *path, struct kstat *st)
389 #ifdef HAVE_INODEOPS_ENHANCED_GETATTR
390 rc = vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT);
391 #elif defined HAVE_VFS_GETATTR_2ARGS
392 rc = vfs_getattr(path, st);
394 rc = vfs_getattr(path->mnt, path->dentry, st);
399 #ifndef HAVE_D_IS_POSITIVE
400 static inline bool d_is_positive(const struct dentry *dentry)
402 return dentry->d_inode != NULL;
406 #ifdef HAVE_VFS_CREATE_USE_NAMEIDATA
407 # define LL_VFS_CREATE_FALSE NULL
409 # define LL_VFS_CREATE_FALSE false
412 #ifndef HAVE_INODE_LOCK
413 # define inode_lock(inode) mutex_lock(&(inode)->i_mutex)
414 # define inode_unlock(inode) mutex_unlock(&(inode)->i_mutex)
415 # define inode_trylock(inode) mutex_trylock(&(inode)->i_mutex)
418 #ifndef HAVE_RADIX_EXCEPTION_ENTRY
419 static inline int radix_tree_exceptional_entry(void *arg)
425 #ifndef HAVE_TRUNCATE_INODE_PAGES_FINAL
426 static inline void truncate_inode_pages_final(struct address_space *map)
428 truncate_inode_pages(map, 0);
432 #ifndef HAVE_PTR_ERR_OR_ZERO
433 static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
443 #define SIZE_MAX (~(size_t)0)
446 #ifdef HAVE_SECURITY_IINITSEC_CALLBACK
447 # define ll_security_inode_init_security(inode, dir, name, value, len, \
448 initxattrs, dentry) \
449 security_inode_init_security(inode, dir, &((dentry)->d_name), \
451 #elif defined HAVE_SECURITY_IINITSEC_QSTR
452 # define ll_security_inode_init_security(inode, dir, name, value, len, \
453 initxattrs, dentry) \
454 security_inode_init_security(inode, dir, &((dentry)->d_name), \
456 #else /* !HAVE_SECURITY_IINITSEC_CALLBACK && !HAVE_SECURITY_IINITSEC_QSTR */
457 # define ll_security_inode_init_security(inode, dir, name, value, len, \
458 initxattrs, dentry) \
459 security_inode_init_security(inode, dir, name, value, len)
462 #ifndef bio_for_each_segment_all /* since kernel version 3.9 */
463 #ifdef HAVE_BVEC_ITER
464 #define bio_for_each_segment_all(bv, bio, it) \
465 for (it = 0, bv = (bio)->bi_io_vec; it < (bio)->bi_vcnt; it++, bv++)
467 #define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
471 #ifdef HAVE_PID_NS_FOR_CHILDREN
472 # define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns_for_children)
474 # define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns)
477 #ifdef HAVE_FULL_NAME_HASH_3ARGS
478 # define ll_full_name_hash(salt, name, len) full_name_hash(salt, name, len)
480 # define ll_full_name_hash(salt, name, len) full_name_hash(name, len)
483 #ifdef HAVE_STRUCT_POSIX_ACL_XATTR
484 # define posix_acl_xattr_header struct posix_acl_xattr_header
485 # define posix_acl_xattr_entry struct posix_acl_xattr_entry
486 # define GET_POSIX_ACL_XATTR_ENTRY(head) ((void *)((head) + 1))
488 # define GET_POSIX_ACL_XATTR_ENTRY(head) ((head)->a_entries)
491 #ifdef HAVE_IOP_XATTR
492 #ifdef HAVE_XATTR_HANDLER_FLAGS
493 #define ll_setxattr generic_setxattr
494 #define ll_getxattr generic_getxattr
495 #define ll_removexattr generic_removexattr
497 int ll_setxattr(struct dentry *dentry, const char *name,
498 const void *value, size_t size, int flags);
499 ssize_t ll_getxattr(struct dentry *dentry, const char *name,
500 void *buf, size_t buf_size);
501 int ll_removexattr(struct dentry *dentry, const char *name);
502 #endif /* ! HAVE_XATTR_HANDLER_FLAGS */
503 #endif /* HAVE_IOP_XATTR */
505 #ifndef HAVE_VFS_SETXATTR
506 const struct xattr_handler *get_xattr_type(const char *name);
509 __vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
510 const void *value, size_t size, int flags)
512 # ifdef HAVE_XATTR_HANDLER_FLAGS
513 const struct xattr_handler *handler;
516 handler = get_xattr_type(name);
520 # if defined(HAVE_XATTR_HANDLER_INODE_PARAM)
521 rc = handler->set(handler, dentry, inode, name, value, size, flags);
522 # elif defined(HAVE_XATTR_HANDLER_SIMPLIFIED)
523 rc = handler->set(handler, dentry, name, value, size, flags);
525 rc = handler->set(dentry, name, value, size, flags, handler->flags);
526 # endif /* !HAVE_XATTR_HANDLER_INODE_PARAM */
528 # else /* !HAVE_XATTR_HANDLER_FLAGS */
529 return ll_setxattr(dentry, name, value, size, flags);
530 # endif /* HAVE_XATTR_HANDLER_FLAGS */
532 #endif /* HAVE_VFS_SETXATTR */
534 #ifdef HAVE_IOP_SET_ACL
535 #ifdef CONFIG_FS_POSIX_ACL
536 #ifndef HAVE_POSIX_ACL_UPDATE_MODE
537 static inline int posix_acl_update_mode(struct inode *inode, umode_t *mode_p,
538 struct posix_acl **acl)
540 umode_t mode = inode->i_mode;
543 error = posix_acl_equiv_mode(*acl, &mode);
548 if (!in_group_p(inode->i_gid) &&
549 !capable_wrt_inode_uidgid(inode, CAP_FSETID))
554 #endif /* HAVE_POSIX_ACL_UPDATE_MODE */
558 #ifndef HAVE_IOV_ITER_TRUNCATE
559 static inline void iov_iter_truncate(struct iov_iter *i, u64 count)
561 if (i->count > count)
567 static inline bool is_sxid(umode_t mode)
569 return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
574 #define IS_NOSEC(inode) (!is_sxid(inode->i_mode))
578 static inline void inode_has_no_xattr(struct inode *inode)
584 #ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
585 static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
590 static inline struct iovec iov_iter_iovec(const struct iov_iter *iter)
592 return (struct iovec) {
593 .iov_base = iter->iov->iov_base + iter->iov_offset,
594 .iov_len = min(iter->count,
595 iter->iov->iov_len - iter->iov_offset),
599 #define iov_for_each(iov, iter, start) \
600 for (iter = (start); \
601 (iter).count && ((iov = iov_iter_iovec(&(iter))), 1); \
602 iov_iter_advance(&(iter), (iov).iov_len))
604 static inline ssize_t
605 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
611 iov_for_each(iov, i, *iter) {
614 res = generic_file_aio_read(iocb, &iov, 1, iocb->ki_pos);
622 if (res < iov.iov_len)
627 iov_iter_advance(iter, bytes);
631 static inline ssize_t
632 __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
638 /* Since LLITE updates file size at the end of I/O in
639 * vvp_io_commit_write(), append write has to be done in atomic when
640 * there are multiple segments because otherwise each iteration to
641 * __generic_file_aio_write() will see original file size */
642 if (unlikely(iocb->ki_filp->f_flags & O_APPEND && iter->nr_segs > 1)) {
643 struct iovec *iov_copy;
646 OBD_ALLOC(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
650 iov_for_each(iov, i, *iter)
651 iov_copy[count++] = iov;
653 bytes = __generic_file_aio_write(iocb, iov_copy, count,
655 OBD_FREE(iov_copy, sizeof(*iov_copy) * iter->nr_segs);
658 iov_iter_advance(iter, bytes);
662 iov_for_each(iov, i, *iter) {
665 res = __generic_file_aio_write(iocb, &iov, 1, &iocb->ki_pos);
673 if (res < iov.iov_len)
678 iov_iter_advance(iter, bytes);
681 #endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
683 static inline void __user *get_vmf_address(struct vm_fault *vmf)
685 #ifdef HAVE_VM_FAULT_ADDRESS
686 return (void __user *)vmf->address;
688 return vmf->virtual_address;
692 #ifdef HAVE_VM_OPS_USE_VM_FAULT_ONLY
693 # define ll_filemap_fault(vma, vmf) filemap_fault(vmf)
695 # define ll_filemap_fault(vma, vmf) filemap_fault(vma, vmf)
698 #ifndef HAVE_CURRENT_TIME
699 static inline struct timespec current_time(struct inode *inode)
707 * time_after32 - compare two 32-bit relative times
708 * @a: the time which may be after @b
709 * @b: the time which may be before @a
711 * time_after32(a, b) returns true if the time @a is after time @b.
712 * time_before32(b, a) returns true if the time @b is before time @a.
714 * Similar to time_after(), compare two 32-bit timestamps for relative
715 * times. This is useful for comparing 32-bit seconds values that can't
716 * be converted to 64-bit values (e.g. due to disk format or wire protocol
717 * issues) when it is known that the times are less than 68 years apart.
719 #define time_after32(a, b) ((s32)((u32)(b) - (u32)(a)) < 0)
720 #define time_before32(b, a) time_after32(a, b)
728 #ifndef alloc_workqueue
729 #define alloc_workqueue(name, flags, max_active) create_workqueue(name)
733 #define smp_store_mb(var, value) set_mb(var, value)
737 #define READ_ONCE ACCESS_ONCE
740 #if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
741 static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
743 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
744 return bi->interval_exp ? 1 << bi->interval_exp : 0;
745 #elif defined(HAVE_INTERVAL_BLK_INTEGRITY)
748 return bi->sector_size;
749 #endif /* !HAVE_INTERVAL_EXP_BLK_INTEGRITY */
752 static inline const char *blk_integrity_name(struct blk_integrity *bi)
754 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
755 return bi->profile->name;
761 static inline unsigned int bip_size(struct bio_integrity_payload *bip)
763 #ifdef HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
764 return bip->bip_iter.bi_size;
766 return bip->bip_size;
769 #else /* !CONFIG_BLK_DEV_INTEGRITY */
770 static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
774 static inline const char *blk_integrity_name(struct blk_integrity *bi)
776 /* gcc8 dislikes when strcmp() is called against NULL */
779 #endif /* !CONFIG_BLK_DEV_INTEGRITY */
781 #ifndef INTEGRITY_FLAG_READ
782 #define INTEGRITY_FLAG_READ BLK_INTEGRITY_VERIFY
785 #ifndef INTEGRITY_FLAG_WRITE
786 #define INTEGRITY_FLAG_WRITE BLK_INTEGRITY_GENERATE
789 static inline bool bdev_integrity_enabled(struct block_device *bdev, int rw)
791 #if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
792 struct blk_integrity *bi = bdev_get_integrity(bdev);
797 #ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
798 if (rw == 0 && bi->profile->verify_fn != NULL &&
799 (bi->flags & INTEGRITY_FLAG_READ))
802 if (rw == 1 && bi->profile->generate_fn != NULL &&
803 (bi->flags & INTEGRITY_FLAG_WRITE))
806 if (rw == 0 && bi->verify_fn != NULL &&
807 (bi->flags & INTEGRITY_FLAG_READ))
810 if (rw == 1 && bi->generate_fn != NULL &&
811 (bi->flags & INTEGRITY_FLAG_WRITE))
813 #endif /* !HAVE_INTERVAL_EXP_BLK_INTEGRITY */
814 #endif /* !CONFIG_BLK_DEV_INTEGRITY */
819 #ifdef HAVE_PAGEVEC_INIT_ONE_PARAM
820 #define ll_pagevec_init(pvec, n) pagevec_init(pvec)
822 #define ll_pagevec_init(pvec, n) pagevec_init(pvec, n)
826 #define page_tree i_pages
828 #define i_pages tree_lock
829 #define xa_lock_irq(lockp) spin_lock_irq(lockp)
830 #define xa_unlock_irq(lockp) spin_unlock_irq(lockp)
833 #endif /* _LUSTRE_COMPAT_H */