* 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/fs_struct.h>
+#include <linux/aio.h>
+#include <linux/fs.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)
+#ifdef HAVE_4ARGS_VFS_SYMLINK
+#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
+ vfs_symlink(dir, dentry, path, mode)
#else
-# define LOCK_FS_STRUCT(fs) spin_lock(&(fs)->lock)
-# define UNLOCK_FS_STRUCT(fs) spin_unlock(&(fs)->lock)
+#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
+ vfs_symlink(dir, dentry, path)
#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);
-}
+#ifdef HAVE_BVEC_ITER
+#define bio_idx(bio) (bio->bi_iter.bi_idx)
+#define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
+#define bvl_to_page(bvl) (bvl->bv_page)
+#else
+#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)
+#define bvl_to_page(bvl) (bvl->bv_page)
+#endif
-/*
- * 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)
+#ifdef HAVE_BVEC_ITER
+#define bio_start_sector(bio) (bio->bi_iter.bi_sector)
+#else
+#define bio_start_sector(bio) (bio->bi_sector)
+#endif
-#define current_ngroups current_cred()->group_info->ngroups
-#define current_groups current_cred()->group_info->small_block
+#ifndef HAVE_DENTRY_D_CHILD
+#define d_child d_u.d_child
+#endif
-/*
- * 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)
+#ifdef HAVE_DENTRY_D_U_D_ALIAS
+#define d_alias d_u.d_alias
#endif
-#ifndef MODULE_ALIAS_FS
-#define MODULE_ALIAS_FS(name)
+#ifndef HAVE_D_IN_LOOKUP
+static inline int d_in_lookup(struct dentry *dentry)
+{
+ return false;
+}
#endif
-#define LTIME_S(time) (time.tv_sec)
+#ifndef HAVE_VM_FAULT_T
+#define vm_fault_t int
+#endif
-#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)
+#ifndef HAVE_FOP_ITERATE_SHARED
+#define iterate_shared iterate
#endif
-#ifdef HAVE_4ARGS_VFS_SYMLINK
-#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
- vfs_symlink(dir, dentry, path, mode)
+#ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
+#define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
#else
-#define ll_vfs_symlink(dir, dentry, mnt, path, mode) \
- vfs_symlink(dir, dentry, path)
+#define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
#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);
+#ifdef HAVE_VFS_RENAME_5ARGS
+#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
+#elif defined HAVE_VFS_RENAME_6ARGS
+#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
#else
-#define ll_generic_file_llseek_size(file, offset, origin, maxbytes, eof) \
- generic_file_llseek_size(file, offset, origin, maxbytes);
+#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
#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 */
+#ifdef HAVE_VFS_UNLINK_3ARGS
+#define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
#else
-# define inode_dio_wait(i) down_write(&(i)->i_alloc_sem)
-# define inode_dio_write_done(i) up_write(&(i)->i_alloc_sem)
+#define ll_vfs_unlink(a, b) vfs_unlink(a, b)
#endif
-#ifndef FS_HAS_FIEMAP
-#define FS_HAS_FIEMAP (0)
+static inline int ll_vfs_getattr(struct path *path, struct kstat *st,
+ u32 request_mask, unsigned int flags)
+{
+ int rc;
+
+#ifdef HAVE_INODEOPS_ENHANCED_GETATTR
+ rc = vfs_getattr(path, st, request_mask, flags);
+#else
+ rc = vfs_getattr(path, st);
#endif
+ return rc;
+}
-#ifndef HAVE_SIMPLE_SETATTR
-#define simple_setattr(dentry, ops) inode_setattr((dentry)->d_inode, ops)
+#ifndef HAVE_D_IS_POSITIVE
+static inline bool d_is_positive(const struct dentry *dentry)
+{
+ return dentry->d_inode != NULL;
+}
#endif
-#ifndef SLAB_DESTROY_BY_RCU
-#define SLAB_DESTROY_BY_RCU 0
+#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_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)
+/* Old kernels lacked both Xarray support and the page cache
+ * using Xarrays. Our back ported Xarray support introduces
+ * the real xa_is_value() but we need a wrapper as well for
+ * the page cache interaction. Lets keep xa_is_value() separate
+ * in old kernels for Xarray support and page cache handling.
+ */
+#ifndef HAVE_XARRAY_SUPPORT
+static inline bool ll_xa_is_value(void *entry)
+{
+ return radix_tree_exceptional_entry(entry);
+}
#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)
+#define ll_xa_is_value xa_is_value
#endif
-#ifndef HAVE_BLKDEV_GET_BY_DEV
-# define blkdev_get_by_dev(dev, mode, holder) open_by_devnum(dev, mode)
+#ifndef HAVE_TRUNCATE_INODE_PAGES_FINAL
+static inline void truncate_inode_pages_final(struct address_space *map)
+{
+ truncate_inode_pages(map, 0);
+}
#endif
-#ifdef HAVE_BVEC_ITER
-#define bio_idx(bio) (bio->bi_iter.bi_idx)
-#define bio_set_sector(bio, sector) (bio->bi_iter.bi_sector = sector)
-#define bvl_to_page(bvl) (bvl->bv_page)
-#else
-#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)
+#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
-#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)
+#ifdef HAVE_PID_NS_FOR_CHILDREN
+# define ll_task_pid_ns(task) \
+ ((task)->nsproxy ? ((task)->nsproxy->pid_ns_for_children) : NULL)
#else
-#define queue_max_phys_segments(rq) queue_max_segments(rq)
-#define queue_max_hw_segments(rq) queue_max_segments(rq)
+# define ll_task_pid_ns(task) \
+ ((task)->nsproxy ? ((task)->nsproxy->pid_ns) : NULL)
#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)
+#ifdef HAVE_FULL_NAME_HASH_3ARGS
+# define ll_full_name_hash(salt, name, len) full_name_hash(salt, name, len)
+#else
+# define ll_full_name_hash(salt, name, len) full_name_hash(name, len)
#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_STRUCT_POSIX_ACL_XATTR
+# define posix_acl_xattr_header struct posix_acl_xattr_header
+# define posix_acl_xattr_entry struct posix_acl_xattr_entry
+# define GET_POSIX_ACL_XATTR_ENTRY(head) ((void *)((head) + 1))
#else
-#define ll_kmap_atomic(a, b) kmap_atomic(a, b)
-#define ll_kunmap_atomic(a, b) kunmap_atomic(a, b)
+# define GET_POSIX_ACL_XATTR_ENTRY(head) ((head)->a_entries)
#endif
-#ifndef HAVE_CLEAR_INODE
-#define clear_inode(i) end_writeback(i)
-#endif
+#ifdef HAVE_IOP_XATTR
+#define ll_setxattr generic_setxattr
+#define ll_getxattr generic_getxattr
+#define ll_removexattr generic_removexattr
+#endif /* HAVE_IOP_XATTR */
-#ifndef HAVE_DENTRY_D_CHILD
-#define d_child d_u.d_child
+#ifndef HAVE_POSIX_ACL_VALID_USER_NS
+#define posix_acl_valid(a,b) posix_acl_valid(b)
#endif
-#ifdef HAVE_DENTRY_D_U_D_ALIAS
-#define d_alias d_u.d_alias
+#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)
+{
+ 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_POSIX_ACL_UPDATE_MODE */
+#endif
#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 HAVE_IOV_ITER_TRUNCATE
+static inline void iov_iter_truncate(struct iov_iter *i, u64 count)
+{
+ if (i->count > count)
+ i->count = count;
+}
+#endif
-#ifndef QUOTA_OK
-# define QUOTA_OK 0
+/*
+ * 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 NO_QUOTA
-# define NO_QUOTA (-EDQUOT)
+#if !defined(SB_ACTIVE) && defined(MS_ACTIVE)
+# define SB_ACTIVE MS_ACTIVE
#endif
-
-#ifndef SEEK_DATA
-#define SEEK_DATA 3 /* seek to the next data */
+#if !defined(SB_NOSEC) && defined(MS_NOSEC)
+# define SB_NOSEC MS_NOSEC
#endif
-#ifndef SEEK_HOLE
-#define SEEK_HOLE 4 /* seek to the next hole */
+#if !defined(SB_POSIXACL) && defined(MS_POSIXACL)
+# define SB_POSIXACL MS_POSIXACL
#endif
-
-#ifndef FMODE_UNSIGNED_OFFSET
-#define FMODE_UNSIGNED_OFFSET ((__force fmode_t)0x2000)
+#if !defined(SB_NODIRATIME) && defined(MS_NODIRATIME)
+# define SB_NODIRATIME MS_NODIRATIME
#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
+#ifndef HAVE_FILE_OPERATIONS_READ_WRITE_ITER
+static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
+{
+ i->count = count;
+}
+
+static inline struct iovec iov_iter_iovec(const struct iov_iter *iter)
+{
+ return (struct iovec) {
+ .iov_base = iter->iov->iov_base + iter->iov_offset,
+ .iov_len = min(iter->count,
+ iter->iov->iov_len - iter->iov_offset),
+ };
+}
+
+#define iov_for_each(iov, iter, start) \
+ for (iter = (start); \
+ (iter).count && ((iov = iov_iter_iovec(&(iter))), 1); \
+ iov_iter_advance(&(iter), (iov).iov_len))
+
+static inline ssize_t
+generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct iovec iov;
+ struct iov_iter i;
+ ssize_t bytes = 0;
+
+ iov_for_each(iov, i, *iter) {
+ ssize_t res;
+
+ res = generic_file_aio_read(iocb, &iov, 1, iocb->ki_pos);
+ if (res <= 0) {
+ if (bytes == 0)
+ bytes = res;
+ break;
+ }
+
+ bytes += res;
+ if (res < iov.iov_len)
+ break;
+ }
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+}
+
+static inline ssize_t
+__generic_file_write_iter(struct kiocb *iocb, struct iov_iter *iter)
+{
+ struct iovec iov;
+ struct iov_iter i;
+ ssize_t bytes = 0;
+
+ /* Since LLITE updates file size at the end of I/O in
+ * vvp_io_commit_write(), append write has to be done in atomic when
+ * there are multiple segments because otherwise each iteration to
+ * __generic_file_aio_write() will see original file size */
+ if (unlikely(iocb->ki_filp->f_flags & O_APPEND && iter->nr_segs > 1)) {
+ struct iovec *iov_copy;
+ int count = 0;
+
+ OBD_ALLOC_PTR_ARRAY(iov_copy, iter->nr_segs);
+ if (!iov_copy)
+ return -ENOMEM;
+
+ iov_for_each(iov, i, *iter)
+ iov_copy[count++] = iov;
+
+ bytes = __generic_file_aio_write(iocb, iov_copy, count,
+ &iocb->ki_pos);
+ OBD_FREE_PTR_ARRAY(iov_copy, iter->nr_segs);
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+ }
+
+ iov_for_each(iov, i, *iter) {
+ ssize_t res;
+
+ res = __generic_file_aio_write(iocb, &iov, 1, &iocb->ki_pos);
+ if (res <= 0) {
+ if (bytes == 0)
+ bytes = res;
+ break;
+ }
+
+ bytes += res;
+ if (res < iov.iov_len)
+ break;
+ }
+
+ if (bytes > 0)
+ iov_iter_advance(iter, bytes);
+ return bytes;
+}
+#endif /* HAVE_FILE_OPERATIONS_READ_WRITE_ITER */
+
+static inline void __user *get_vmf_address(struct vm_fault *vmf)
+{
+#ifdef HAVE_VM_FAULT_ADDRESS
+ return (void __user *)vmf->address;
+#else
+ return vmf->virtual_address;
#endif
+}
-#ifdef ATTR_TIMES_SET
-# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)
+#ifdef HAVE_VM_OPS_USE_VM_FAULT_ONLY
+# define ll_filemap_fault(vma, vmf) filemap_fault(vmf)
#else
-# define TIMES_SET_FLAGS (ATTR_MTIME_SET | ATTR_ATIME_SET)
+# define ll_filemap_fault(vma, vmf) filemap_fault(vma, vmf)
#endif
-#ifndef XATTR_NAME_POSIX_ACL_ACCESS
-# define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
+#ifndef HAVE_CURRENT_TIME
+static inline struct timespec current_time(struct inode *inode)
+{
+ return CURRENT_TIME;
+}
#endif
-#ifndef XATTR_NAME_POSIX_ACL_DEFAULT
-# define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
+#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 HAVE_LM_XXX_LOCK_MANAGER_OPS
-# define lm_compare_owner fl_compare_owner
+#ifndef smp_store_mb
+#define smp_store_mb(var, value) set_mb(var, value)
#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)
+#if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
+static inline unsigned short blk_integrity_interval(struct blk_integrity *bi)
{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 1, 0)
- flag = (flag & ~O_ACCMODE) | OPEN_FMODE(flag);
-#endif
- return flag;
+#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 */
}
-#ifdef HAVE_QC_MAKE_REQUEST_FN
-# define ll_mrf_ret blk_qc_t
-# define LL_MRF_RETURN(rc) RETURN(BLK_QC_T_NONE)
+static inline const char *blk_integrity_name(struct blk_integrity *bi)
+{
+#ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
+ return bi->profile->name;
#else
-# ifdef HAVE_VOID_MAKE_REQUEST_FN
-# define ll_mrf_ret void
-# define LL_MRF_RETURN(rc)
-# else
-# define ll_mrf_ret int
-# define LL_MRF_RETURN(rc) RETURN(rc)
-# endif
+ return bi->name;
#endif
+}
-#include <linux/fs.h>
-#ifndef HAVE_PROTECT_I_NLINK
-static inline void set_nlink(struct inode *inode, unsigned int nlink)
+static inline unsigned int bip_size(struct bio_integrity_payload *bip)
{
- inode->i_nlink = nlink;
+#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
-#ifdef HAVE_INODEOPS_USE_UMODE_T
-# define ll_umode_t umode_t
-#else
-# define ll_umode_t int
+#ifndef INTEGRITY_FLAG_WRITE
+#define INTEGRITY_FLAG_WRITE BLK_INTEGRITY_GENERATE
#endif
-#include <linux/dcache.h>
-#ifndef HAVE_D_MAKE_ROOT
-static inline struct dentry *d_make_root(struct inode *root)
+static inline bool bdev_integrity_enabled(struct block_device *bdev, int rw)
{
- struct dentry *res = d_alloc_root(root);
+#if IS_ENABLED(CONFIG_BLK_DEV_INTEGRITY)
+ struct blk_integrity *bi = bdev_get_integrity(bdev);
- if (res == NULL && root)
- iput(root);
+ if (bi == NULL)
+ return false;
- return res;
-}
-#endif
+#ifdef HAVE_INTERVAL_EXP_BLK_INTEGRITY
+ if (rw == 0 && bi->profile->verify_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_READ))
+ return true;
-#ifdef HAVE_DIRTY_INODE_HAS_FLAG
-# define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode), flag)
+ if (rw == 1 && bi->profile->generate_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_WRITE))
+ return true;
#else
-# define ll_dirty_inode(inode, flag) (inode)->i_sb->s_op->dirty_inode((inode))
-#endif
+ if (rw == 0 && bi->verify_fn != NULL &&
+ (bi->flags & INTEGRITY_FLAG_READ))
+ return true;
-#ifdef HAVE_FILE_F_INODE
-# define set_file_inode(file, inode) (file)->f_inode = inode
-#else
-# define set_file_inode(file, inode)
-#endif
+ 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 */
-#ifndef HAVE_FILE_INODE
-static inline struct inode *file_inode(const struct file *file)
-{
- return file->f_path.dentry->d_inode;
+ return false;
}
-#endif
-#ifdef HAVE_OLDSIZE_TRUNCATE_PAGECACHE
-#define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, 0, size)
+#ifdef HAVE_PAGEVEC_INIT_ONE_PARAM
+#define ll_pagevec_init(pvec, n) pagevec_init(pvec)
#else
-#define ll_truncate_pagecache(inode, size) truncate_pagecache(inode, size)
+#define ll_pagevec_init(pvec, n) pagevec_init(pvec, n)
#endif
-#ifdef HAVE_VFS_RENAME_5ARGS
-#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL)
-#elif defined HAVE_VFS_RENAME_6ARGS
-#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d, NULL, 0)
+#ifdef HAVE_D_COUNT
+# define ll_d_count(d) d_count(d)
#else
-#define ll_vfs_rename(a, b, c, d) vfs_rename(a, b, c, d)
+# 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_VFS_UNLINK_3ARGS
-#define ll_vfs_unlink(a, b) vfs_unlink(a, b, NULL)
+#ifdef HAVE_I_PAGES
+#define page_tree i_pages
+#define ll_xa_lock_irqsave(lockp, flags) xa_lock_irqsave(lockp, flags)
+#define ll_xa_unlock_irqrestore(lockp, flags) xa_unlock_irqrestore(lockp, flags)
#else
-#define ll_vfs_unlink(a, b) vfs_unlink(a, b)
+#define i_pages tree_lock
+#define ll_xa_lock_irqsave(lockp, flags) spin_lock_irqsave(lockp, flags)
+#define ll_xa_unlock_irqrestore(lockp, flags) spin_unlock_irqrestore(lockp, flags)
#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)
+#ifndef HAVE_LOCK_PAGE_MEMCG
+#define lock_page_memcg(page) do {} while (0)
+#define unlock_page_memcg(page) do {} while (0)
#endif
-#ifndef HAVE_RADIX_EXCEPTION_ENTRY
-static inline int radix_tree_exceptional_entry(void *arg)
-{
- return 0;
-}
+#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_TRUNCATE_INODE_PAGES_FINAL
-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 */
-}
+#ifndef HAVE_LINUX_SELINUX_IS_ENABLED
+#define selinux_is_enabled() 1
#endif
-#ifndef SIZE_MAX
-#define SIZE_MAX (~(size_t)0)
-#endif
+static inline int ll_vfs_getxattr(struct dentry *dentry, struct inode *inode,
+ const char *name,
+ void *value, size_t size)
+{
+#ifndef HAVE_VFS_SETXATTR
+ if (unlikely(!inode->i_op->getxattr))
+ return -ENODATA;
-#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)
+ return inode->i_op->getxattr(dentry, name, value, size);
+#else
+ return __vfs_getxattr(dentry, inode, name, value, size);
#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++)
+static inline int ll_vfs_setxattr(struct dentry *dentry, struct inode *inode,
+ const char *name,
+ const void *value, size_t size, int flags)
+{
+#ifndef HAVE_VFS_SETXATTR
+ if (unlikely(!inode->i_op->setxattr))
+ return -EOPNOTSUPP;
+
+ return inode->i_op->setxattr(dentry, name, value, size, flags);
#else
-#define bio_for_each_segment_all(bv, bio, it) bio_for_each_segment(bv, bio, it)
-#endif
+ return __vfs_setxattr(dentry, inode, name, value, size, flags);
#endif
+}
-#ifdef HAVE_PID_NS_FOR_CHILDREN
-# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns_for_children)
+static inline int ll_vfs_removexattr(struct dentry *dentry, struct inode *inode,
+ const char *name)
+{
+#ifndef HAVE_VFS_SETXATTR
+ if (unlikely(!inode->i_op->setxattr))
+ return -EOPNOTSUPP;
+
+ return inode->i_op->removexattr(dentry, name);
#else
-# define ll_task_pid_ns(task) ((task)->nsproxy->pid_ns)
+ return __vfs_removexattr(dentry, name);
#endif
+}
#endif /* _LUSTRE_COMPAT_H */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff