* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2014, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef _LUSTRE_COMPAT_H
#define _LUSTRE_COMPAT_H
+#include <linux/aio.h>
+#include <linux/fs.h>
#include <linux/fs_struct.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
+#include <linux/posix_acl_xattr.h>
#include <linux/bio.h>
#include <linux/xattr.h>
+#include <linux/workqueue.h>
+#include <linux/blkdev.h>
+#include <linux/slab.h>
-#include <libcfs/libcfs.h>
-#include <lustre_patchless_compat.h>
+#include <libcfs/linux/linux-fs.h>
#include <obd_support.h>
-#ifdef HAVE_FS_STRUCT_RWLOCK
-# define LOCK_FS_STRUCT(fs) write_lock(&(fs)->lock)
-# define UNLOCK_FS_STRUCT(fs) write_unlock(&(fs)->lock)
-#else
-# define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
-# define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
-#endif
-
-static inline void ll_set_fs_pwd(struct fs_struct *fs, struct vfsmount *mnt,
- struct dentry *dentry)
-{
- struct path path;
- struct path old_pwd;
-
- path.mnt = mnt;
- path.dentry = dentry;
- LOCK_FS_STRUCT(fs);
- old_pwd = fs->pwd;
- path_get(&path);
- fs->pwd = path;
- UNLOCK_FS_STRUCT(fs);
-
- if (old_pwd.dentry)
- path_put(&old_pwd);
-}
-
-/*
- * set ATTR_BLOCKS to a high value to avoid any risk of collision with other
- * ATTR_* attributes (see bug 13828)
- */
-#define ATTR_BLOCKS (1 << 27)
-
-#define current_ngroups current_cred()->group_info->ngroups
-#define current_groups current_cred()->group_info->small_block
-
-/*
- * OBD need working random driver, thus all our
- * initialization routines must be called after device
- * driver initialization
- */
-#ifndef MODULE
-#undef module_init
-#define module_init(a) late_initcall(a)
-#endif
-
-#ifndef MODULE_ALIAS_FS
-#define MODULE_ALIAS_FS(name)
-#endif
-
-#define LTIME_S(time) (time.tv_sec)
-
-#ifdef HAVE_GENERIC_PERMISSION_2ARGS
-# define ll_generic_permission(inode, mask, flags, check_acl) \
- generic_permission(inode, mask)
-#elif defined HAVE_GENERIC_PERMISSION_4ARGS
-# define ll_generic_permission(inode, mask, flags, check_acl) \
- generic_permission(inode, mask, flags, check_acl)
-#else
-# define ll_generic_permission(inode, mask, flags, check_acl) \
- generic_permission(inode, mask, check_acl)
-#endif
-
#ifdef HAVE_4ARGS_VFS_SYMLINK
#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
vfs_symlink(dir, dentry, path, mode)
vfs_symlink(dir, dentry, path)
#endif
-#if !defined(HAVE_FILE_LLSEEK_SIZE) || defined(HAVE_FILE_LLSEEK_SIZE_5ARGS)
-#define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
- generic_file_llseek_size(file, offset, origin, maxbytes, eof);
-#else
-#define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
- generic_file_llseek_size(file, offset, origin, maxbytes);
-#endif
-
-#ifdef HAVE_INODE_DIO_WAIT
-/* inode_dio_wait(i) use as-is for write lock */
-# define inode_dio_write_done(i) do {} while (0) /* for write unlock */
-#else
-# define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
-# define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
-#endif
-
-#ifndef FS_HAS_FIEMAP
-#define FS_HAS_FIEMAP (0)
-#endif
-
-#ifndef HAVE_SIMPLE_SETATTR
-#define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
-#endif
-
-#ifndef SLAB_DESTROY_BY_RCU
-#define SLAB_DESTROY_BY_RCU 0
-#endif
-
-#ifndef HAVE_DQUOT_SUSPEND
-# define ll_vfs_dq_init vfs_dq_init
-# define ll_vfs_dq_drop vfs_dq_drop
-# define ll_vfs_dq_transfer vfs_dq_transfer
-# define ll_vfs_dq_off(sb, remount) vfs_dq_off(sb, remount)
-#else
-# define ll_vfs_dq_init dquot_initialize
-# define ll_vfs_dq_drop dquot_drop
-# define ll_vfs_dq_transfer dquot_transfer
-# define ll_vfs_dq_off(sb, remount) dquot_suspend(sb, -1)
-#endif
-
-#ifndef HAVE_BLKDEV_GET_BY_DEV
-# define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
+#ifndef HAVE_INIT_LIST_HEAD_RCU
+static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
+{
+ WRITE_ONCE(list->next, list);
+ WRITE_ONCE(list->prev, list);
+}
#endif
#ifdef HAVE_BVEC_ITER
#define bio_idx(bio) (bio->bi_idx)
#define bio_set_sector(bio, sector) (bio->bi_sector = sector)
#define bio_sectors(bio) ((bio)->bi_size >> 9)
-#ifndef HAVE_BIO_END_SECTOR
-#define bio_end_sector(bio) (bio->bi_sector + bio_sectors(bio))
-#endif
#define bvl_to_page(bvl) (bvl->bv_page)
#endif
-#ifndef HAVE_BLK_QUEUE_MAX_SEGMENTS
-#define blk_queue_max_segments(rq, seg) \
- do { blk_queue_max_phys_segments(rq, seg); \
- blk_queue_max_hw_segments(rq, seg); } while (0)
-#else
-#define queue_max_phys_segments(rq) queue_max_segments(rq)
-#define queue_max_hw_segments(rq) queue_max_segments(rq)
-#endif
-
-#ifdef HAVE_BLK_PLUG
-#define DECLARE_PLUG(plug) struct blk_plug plug
-#else /* !HAVE_BLK_PLUG */
-#define DECLARE_PLUG(name)
-#define blk_start_plug(plug) do {} while (0)
-#define blk_finish_plug(plug) do {} while (0)
-#endif
-
-#ifdef HAVE_KMAP_ATOMIC_HAS_1ARG
-#define ll_kmap_atomic(a, b) kmap_atomic(a)
-#define ll_kunmap_atomic(a, b) kunmap_atomic(a)
+#ifdef HAVE_BVEC_ITER
+#define bio_start_sector(bio) (bio->bi_iter.bi_sector)
#else
-#define ll_kmap_atomic(a, b) kmap_atomic(a, b)
-#define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
-#endif
-
-#ifndef HAVE_CLEAR_INODE
-#define clear_inode(i) end_writeback(i)
+#define bio_start_sector(bio) (bio->bi_sector)
#endif
#ifndef HAVE_DENTRY_D_CHILD
#define d_alias d_u.d_alias
#endif
-#ifndef DATA_FOR_LLITE_IS_LIST
-#define ll_d_hlist_node hlist_node
-#define ll_d_hlist_empty(list) hlist_empty(list)
-#define ll_d_hlist_entry(ptr, type, name) hlist_entry(ptr.first, type, name)
-#define ll_d_hlist_for_each(tmp, i_dentry) hlist_for_each(tmp, i_dentry)
-# ifdef HAVE_HLIST_FOR_EACH_3ARG
-# define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
- p = NULL; hlist_for_each_entry(dentry, i_dentry, d_alias)
-# else
-# define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
- hlist_for_each_entry(dentry, p, i_dentry, d_alias)
-# endif
-#define DECLARE_LL_D_HLIST_NODE_PTR(name) struct ll_d_hlist_node *name
-#else
-#define ll_d_hlist_node list_head
-#define ll_d_hlist_empty(list) list_empty(list)
-#define ll_d_hlist_entry(ptr, type, name) list_entry(ptr.next, type, name)
-#define ll_d_hlist_for_each(tmp, i_dentry) list_for_each(tmp, i_dentry)
-#define ll_d_hlist_for_each_entry(dentry, p, i_dentry) \
- list_for_each_entry(dentry, i_dentry, d_alias)
-#define DECLARE_LL_D_HLIST_NODE_PTR(name) /* nothing */
-#endif /* !DATA_FOR_LLITE_IS_LIST */
-
-#ifndef QUOTA_OK
-# define QUOTA_OK 0
-#endif
-#ifndef NO_QUOTA
-# define NO_QUOTA (-EDQUOT)
-#endif
-
-#ifndef SEEK_DATA
-#define SEEK_DATA 3 /* seek to the next data */
-#endif
-#ifndef SEEK_HOLE
-#define SEEK_HOLE 4 /* seek to the next hole */
-#endif
-
-#ifndef FMODE_UNSIGNED_OFFSET
-#define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
-#endif
-
-#if !defined(_ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_) && !defined(ext2_set_bit)
-# define ext2_set_bit __test_and_set_bit_le
-# define ext2_clear_bit __test_and_clear_bit_le
-# define ext2_test_bit test_bit_le
-# define ext2_find_first_zero_bit find_first_zero_bit_le
-# define ext2_find_next_zero_bit find_next_zero_bit_le
-#endif
-
-#ifdef ATTR_TIMES_SET
-# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
-#else
-# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
-#endif
-
-#ifndef XATTR_NAME_POSIX_ACL_ACCESS
-# define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
-#endif
-
-#ifndef XATTR_NAME_POSIX_ACL_DEFAULT
-# define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
-#endif
-
-#ifndef HAVE_LM_XXX_LOCK_MANAGER_OPS
-# define lm_compare_owner fl_compare_owner
-#endif
-
-/*
- * After 3.1, kernel's nameidata.intent.open.flags is different
- * with lustre's lookup_intent.it_flags, as lustre's it_flags'
- * lower bits equal to FMODE_xxx while kernel doesn't transliterate
- * lower bits of nameidata.intent.open.flags to FMODE_xxx.
- * */
-#include <linux/version.h>
-static inline int ll_namei_to_lookup_intent_flag(int flag)
+#ifndef HAVE_D_IN_LOOKUP
+static inline int d_in_lookup(struct dentry *dentry)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
- flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
-#endif
- return flag;
-}
-
-#include <linux/fs.h>
-#ifndef HAVE_PROTECT_I_NLINK
-static inline void set_nlink(struct inode *inode, unsigned int nlink)
-{
- inode->i_nlink = nlink;
+ return false;
}
#endif
-#ifdef HAVE_INODEOPS_USE_UMODE_T
-# define ll_umode_t umode_t
-#else
-# define ll_umode_t int
+#ifndef HAVE_VM_FAULT_T
+#define vm_fault_t int
#endif
-#include <linux/dcache.h>
-#ifndef HAVE_D_MAKE_ROOT
-static inline struct dentry *d_make_root(struct inode *root)
-{
- struct dentry *res = d_alloc_root(root);
-
- if (res == NULL && root)
- iput(root);
-
- return res;
-}
-#endif
-
-#ifdef HAVE_DIRTY_INODE_HAS_FLAG
-# define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
-#else
-# define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
-#endif
-
-#ifdef HAVE_FILE_F_INODE
-# define set_file_inode(file, inode) (file)->f_inode = inode
-#else
-# define set_file_inode(file, inode)
-#endif
-
-#ifndef HAVE_FILE_INODE
-static inline struct inode *file_inode(const struct file *file)
-{
- return file->f_path.dentry->d_inode;
-}
+#ifndef HAVE_FOP_ITERATE_SHARED
+#define iterate_shared iterate
#endif
#ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
#define ll_vfs_unlink(a, b) vfs_unlink(a, b)
#endif
+static inline int ll_vfs_getattr(struct path *path, struct kstat *st)
+{
+ int rc;
+
+#ifdef HAVE_INODEOPS_ENHANCED_GETATTR
+ rc = vfs_getattr(path, st, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT);
+#else
+ rc = vfs_getattr(path, st);
+#endif
+ return rc;
+}
+
+#ifndef HAVE_D_IS_POSITIVE
+static inline bool d_is_positive(const struct dentry *dentry)
+{
+ return dentry->d_inode != NULL;
+}
+#endif
+
#ifndef HAVE_INODE_LOCK
# define inode_lock(inode) mutex_lock(&(inode)->i_mutex)
# define inode_unlock(inode) mutex_unlock(&(inode)->i_mutex)
# define inode_trylock(inode) mutex_trylock(&(inode)->i_mutex)
#endif
-#ifndef HAVE_RADIX_EXCEPTION_ENTRY
-static inline int radix_tree_exceptional_entry(void *arg)
+#ifndef HAVE_XA_IS_VALUE
+static inline bool xa_is_value(void *entry)
{
- return 0;
+ return radix_tree_exceptional_entry(entry);
}
#endif
static inline void truncate_inode_pages_final(struct address_space *map)
{
truncate_inode_pages(map, 0);
- /* Workaround for LU-118 */
- if (map->nrpages) {
- spin_lock_irq(&map->tree_lock);
- spin_unlock_irq(&map->tree_lock);
- } /* Workaround end */
}
#endif
-#ifndef SIZE_MAX
-#define SIZE_MAX (~(size_t)0)
-#endif
-
-#ifdef HAVE_SECURITY_IINITSEC_CALLBACK
-# define ll_security_inode_init_security(inode, dir, name, value, len, \
- initxattrs, dentry) \
- security_inode_init_security(inode, dir, &((dentry)->d_name), \
- initxattrs, dentry)
-#elif defined HAVE_SECURITY_IINITSEC_QSTR
-# define ll_security_inode_init_security(inode, dir, name, value, len, \
- initxattrs, dentry) \
- security_inode_init_security(inode, dir, &((dentry)->d_name), \
- name, value, len)
-#else /* !HAVE_SECURITY_IINITSEC_CALLBACK && !HAVE_SECURITY_IINITSEC_QSTR */
-# define ll_security_inode_init_security(inode, dir, name, value, len, \
- initxattrs, dentry) \
- security_inode_init_security(inode, dir, name, value, len)
-#endif
-
-#ifndef bio_for_each_segment_all /* since kernel version 3.9 */
-#ifdef HAVE_BVEC_ITER
-#define bio_for_each_segment_all(bv, bio, it) \
- for (it = 0, bv = (bio)->bi_io_vec; it < (bio)->bi_vcnt; it++, bv++)
-#else
-#define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
-#endif
+#ifndef HAVE_PTR_ERR_OR_ZERO
+static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
+{
+ if (IS_ERR(ptr))
+ return PTR_ERR(ptr);
+ else
+ return 0;
+}
#endif
#ifdef HAVE_PID_NS_FOR_CHILDREN
-# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns_for_children)
+# define ll_task_pid_ns(task) \
+ ((task)->nsproxy ? ((task)->nsproxy->pid_ns_for_children) : NULL)
#else
-# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns)
+# define ll_task_pid_ns(task) \
+ ((task)->nsproxy ? ((task)->nsproxy->pid_ns) : NULL)
#endif
#ifdef HAVE_FULL_NAME_HASH_3ARGS
#endif
#ifdef HAVE_IOP_XATTR
-#ifdef HAVE_XATTR_HANDLER_FLAGS
#define ll_setxattr generic_setxattr
#define ll_getxattr generic_getxattr
#define ll_removexattr generic_removexattr
-#else
-int ll_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags);
-ssize_t ll_getxattr(struct dentry *dentry, const char *name,
- void *buf, size_t buf_size);
-int ll_removexattr(struct dentry *dentry, const char *name);
-#endif /* ! HAVE_XATTR_HANDLER_FLAGS */
#endif /* HAVE_IOP_XATTR */
#ifndef HAVE_VFS_SETXATTR
const struct xattr_handler *get_xattr_type(const char *name);
-#ifdef HAVE_XATTR_HANDLER_FLAGS
static inline int
__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
const void *value, size_t size, int flags)
handler = get_xattr_type(name);
if (!handler)
- return -ENXIO;
-
-#if defined(HAVE_XATTR_HANDLER_INODE_PARAM)
- rc = handler->set(handler, dentry, inode, name, value, size,
- XATTR_CREATE);
-#elif defined(HAVE_XATTR_HANDLER_SIMPLIFIED)
- rc = handler->set(handler, dentry, name, value, size, XATTR_CREATE);
-#else
- rc = handler->set(dentry, name, value, size, XATTR_CREATE,
- handler->flags);
-#endif /* !HAVE_XATTR_HANDLER_INODE_PARAM */
+ return -EOPNOTSUPP;
+
+# if defined(HAVE_XATTR_HANDLER_INODE_PARAM)
+ rc = handler->set(handler, dentry, inode, name, value, size, flags);
+# elif defined(HAVE_XATTR_HANDLER_SIMPLIFIED)
+ rc = handler->set(handler, dentry, name, value, size, flags);
+# else
+ rc = handler->set(dentry, name, value, size, flags, handler->flags);
+# endif /* !HAVE_XATTR_HANDLER_INODE_PARAM */
return rc;
}
-#else /* !HAVE_XATTR_HANDLER_FLAGS */
-static inline int
-__vfs_setxattr(struct dentry *dentry, struct inode *inode, const char *name,
- const void *value, size_t size, int flags)
+#endif /* HAVE_VFS_SETXATTR */
+
+#ifndef HAVE_POSIX_ACL_VALID_USER_NS
+#define posix_acl_valid(a,b) posix_acl_valid(b)
+#endif
+
+#ifdef HAVE_IOP_SET_ACL
+#ifdef CONFIG_LUSTRE_FS_POSIX_ACL
+#ifndef HAVE_POSIX_ACL_UPDATE_MODE
+static inline int posix_acl_update_mode(struct inode *inode, umode_t *mode_p,
+ struct posix_acl **acl)
{
- return ll_setxattr(dentry, name, value, size, flags);
+ umode_t mode = inode->i_mode;
+ int error;
+
+ error = posix_acl_equiv_mode(*acl, &mode);
+ if (error < 0)
+ return error;
+ if (error == 0)
+ *acl = NULL;
+ if (!in_group_p(inode->i_gid) &&
+ !capable_wrt_inode_uidgid(inode, CAP_FSETID))
+ mode &= ~S_ISGID;
+ *mode_p = mode;
+ return 0;
}
-#endif /* HAVE_XATTR_HANDLER_FLAGS */
-#endif /* HAVE_VFS_SETXATTR */
+#endif /* HAVE_POSIX_ACL_UPDATE_MODE */
+#endif
+#endif
#ifndef HAVE_IOV_ITER_TRUNCATE
static inline void iov_iter_truncate(struct iov_iter *i, u64 count)
}
#endif
-#ifndef HAVE_IS_SXID
-static inline bool is_sxid(umode_t mode)
-{
- return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP));
-}
+/*
+ * mount MS_* flags split from superblock SB_* flags
+ * if the SB_* flags are not available use the MS_* flags
+ */
+#if !defined(SB_RDONLY) && defined(MS_RDONLY)
+# define SB_RDONLY MS_RDONLY
#endif
-
-#ifndef IS_NOSEC
-#define IS_NOSEC(inode) (!is_sxid(inode->i_mode))
+#if !defined(SB_ACTIVE) && defined(MS_ACTIVE)
+# define SB_ACTIVE MS_ACTIVE
#endif
-
-#ifndef MS_NOSEC
-static inline void inode_has_no_xattr(struct inode *inode)
-{
- return;
-}
+#if !defined(SB_NOSEC) && defined(MS_NOSEC)
+# define SB_NOSEC MS_NOSEC
+#endif
+#if !defined(SB_POSIXACL) && defined(MS_POSIXACL)
+# define SB_POSIXACL MS_POSIXACL
+#endif
+#if !defined(SB_NODIRATIME) && defined(MS_NODIRATIME)
+# define SB_NODIRATIME MS_NODIRATIME
#endif
#ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
# define ll_filemap_fault(vma, vmf) filemap_fault(vma, vmf)
#endif
+#ifndef HAVE_CURRENT_TIME
+static inline struct timespec current_time(struct inode *inode)
+{
+ return CURRENT_TIME;
+}
+#endif
+
+#ifndef time_after32
+/**
+ * time_after32 - compare two 32-bit relative times
+ * @a: the time which may be after @b
+ * @b: the time which may be before @a
+ *
+ * Needed for kernels earlier than v4.14-rc1~134^2
+ *
+ * time_after32(a, b) returns true if the time @a is after time @b.
+ * time_before32(b, a) returns true if the time @b is before time @a.
+ *
+ * Similar to time_after(), compare two 32-bit timestamps for relative
+ * times. This is useful for comparing 32-bit seconds values that can't
+ * be converted to 64-bit values (e.g. due to disk format or wire protocol
+ * issues) when it is known that the times are less than 68 years apart.
+ */
+#define time_after32(a, b) ((s32)((u32)(b) - (u32)(a)) < 0)
+#define time_before32(b, a) time_after32(a, b)
+
+#endif
+
+#ifndef smp_store_mb
+#define smp_store_mb(var, value) set_mb(var, value)
+#endif
+
+#if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
+static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
+{
+#ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
+ return bi->interval_exp ? 1 << bi->interval_exp : 0;
+#elif defined(HAVE_INTERVAL_BLK_INTEGRITY)
+ return bi->interval;
+#else
+ return bi->sector_size;
+#endif /* !HAVE_INTERVAL_EXP_BLK_INTEGRITY */
+}
+
+static inline const char *blk_integrity_name(struct blk_integrity *bi)
+{
+#ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
+ return bi->profile->name;
+#else
+ return bi->name;
+#endif
+}
+
+static inline unsigned int bip_size(struct bio_integrity_payload *bip)
+{
+#ifdef HAVE_BIP_ITER_BIO_INTEGRITY_PAYLOAD
+ return bip->bip_iter.bi_size;
+#else
+ return bip->bip_size;
+#endif
+}
+#else /* !CONFIG_BLK_DEV_INTEGRITY */
+static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
+{
+ return 0;
+}
+static inline const char *blk_integrity_name(struct blk_integrity *bi)
+{
+ /* gcc8 dislikes when strcmp() is called against NULL */
+ return "";
+}
+#endif /* !CONFIG_BLK_DEV_INTEGRITY */
+
+#ifndef INTEGRITY_FLAG_READ
+#define INTEGRITY_FLAG_READ BLK_INTEGRITY_VERIFY
+#endif
+
+#ifndef INTEGRITY_FLAG_WRITE
+#define INTEGRITY_FLAG_WRITE BLK_INTEGRITY_GENERATE
+#endif
+
+static inline bool bdev_integrity_enabled(struct block_device *bdev, int rw)
+{
+#if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
+ struct blk_integrity *bi = bdev_get_integrity(bdev);
+
+ if (bi == NULL)
+ return false;
+
+#ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
+ if (rw == 0 && bi->profile->verify_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_READ))
+ return true;
+
+ if (rw == 1 && bi->profile->generate_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_WRITE))
+ return true;
+#else
+ if (rw == 0 && bi->verify_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_READ))
+ return true;
+
+ if (rw == 1 && bi->generate_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_WRITE))
+ return true;
+#endif /* !HAVE_INTERVAL_EXP_BLK_INTEGRITY */
+#endif /* !CONFIG_BLK_DEV_INTEGRITY */
+
+ return false;
+}
+
+#ifdef HAVE_PAGEVEC_INIT_ONE_PARAM
+#define ll_pagevec_init(pvec, n) pagevec_init(pvec)
+#else
+#define ll_pagevec_init(pvec, n) pagevec_init(pvec, n)
+#endif
+
+#ifdef HAVE_D_COUNT
+# define ll_d_count(d) d_count(d)
+#else
+# define ll_d_count(d) ((d)->d_count)
+#endif /* HAVE_D_COUNT */
+
+#ifndef HAVE_IN_COMPAT_SYSCALL
+#define in_compat_syscall is_compat_task
+#endif
+
+#ifdef HAVE_I_PAGES
+#define page_tree i_pages
+#else
+#define i_pages tree_lock
+#endif
+
+#ifndef xa_lock_irqsave
+#define xa_lock_irqsave(lockp, flags) spin_lock_irqsave(lockp, flags)
+#define xa_unlock_irqrestore(lockp, flags) spin_unlock_irqrestore(lockp, flags)
+#endif
+
+#ifndef HAVE_LOCK_PAGE_MEMCG
+#define lock_page_memcg(page) do {} while (0)
+#define unlock_page_memcg(page) do {} while (0)
+#endif
+
+#ifndef KMEM_CACHE_USERCOPY
+#define kmem_cache_create_usercopy(name, size, align, flags, useroffset, \
+ usersize, ctor) \
+ kmem_cache_create(name, size, align, flags, ctor)
+#endif
+
+#ifndef HAVE_LINUX_SELINUX_IS_ENABLED
+#define selinux_is_enabled() 1
+#endif
+
#endif /* _LUSTRE_COMPAT_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff