646 lines
15 KiB
C
646 lines
15 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011 Lawrence Livermore National Security, LLC.
|
|
* Copyright (C) 2015 Jörg Thalheim.
|
|
*/
|
|
|
|
#ifndef _ZFS_VFS_H
|
|
#define _ZFS_VFS_H
|
|
|
|
#include <sys/taskq.h>
|
|
#include <sys/cred.h>
|
|
#include <linux/backing-dev.h>
|
|
#include <linux/compat.h>
|
|
|
|
/*
|
|
* 2.6.28 API change,
|
|
* Added insert_inode_locked() helper function, prior to this most callers
|
|
* used insert_inode_hash(). The older method doesn't check for collisions
|
|
* in the inode_hashtable but it still acceptible for use.
|
|
*/
|
|
#ifndef HAVE_INSERT_INODE_LOCKED
|
|
static inline int
|
|
insert_inode_locked(struct inode *ip)
|
|
{
|
|
insert_inode_hash(ip);
|
|
return (0);
|
|
}
|
|
#endif /* HAVE_INSERT_INODE_LOCKED */
|
|
|
|
/*
|
|
* 2.6.35 API change,
|
|
* Add truncate_setsize() if it is not exported by the Linux kernel.
|
|
*
|
|
* Truncate the inode and pages associated with the inode. The pages are
|
|
* unmapped and removed from cache.
|
|
*/
|
|
#ifndef HAVE_TRUNCATE_SETSIZE
|
|
static inline void
|
|
truncate_setsize(struct inode *ip, loff_t new)
|
|
{
|
|
struct address_space *mapping = ip->i_mapping;
|
|
|
|
i_size_write(ip, new);
|
|
|
|
unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
|
|
truncate_inode_pages(mapping, new);
|
|
unmap_mapping_range(mapping, new + PAGE_SIZE - 1, 0, 1);
|
|
}
|
|
#endif /* HAVE_TRUNCATE_SETSIZE */
|
|
|
|
/*
|
|
* 2.6.32 - 2.6.33, bdi_setup_and_register() is not available.
|
|
* 2.6.34 - 3.19, bdi_setup_and_register() takes 3 arguments.
|
|
* 4.0 - 4.11, bdi_setup_and_register() takes 2 arguments.
|
|
* 4.12 - x.y, super_setup_bdi_name() new interface.
|
|
*/
|
|
#if defined(HAVE_SUPER_SETUP_BDI_NAME)
|
|
extern atomic_long_t zfs_bdi_seq;
|
|
|
|
static inline int
|
|
zpl_bdi_setup(struct super_block *sb, char *name)
|
|
{
|
|
return super_setup_bdi_name(sb, "%.28s-%ld", name,
|
|
atomic_long_inc_return(&zfs_bdi_seq));
|
|
}
|
|
static inline void
|
|
zpl_bdi_destroy(struct super_block *sb)
|
|
{
|
|
}
|
|
#elif defined(HAVE_2ARGS_BDI_SETUP_AND_REGISTER)
|
|
static inline int
|
|
zpl_bdi_setup(struct super_block *sb, char *name)
|
|
{
|
|
struct backing_dev_info *bdi;
|
|
int error;
|
|
|
|
bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
|
|
error = bdi_setup_and_register(bdi, name);
|
|
if (error) {
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
return (error);
|
|
}
|
|
|
|
sb->s_bdi = bdi;
|
|
|
|
return (0);
|
|
}
|
|
static inline void
|
|
zpl_bdi_destroy(struct super_block *sb)
|
|
{
|
|
struct backing_dev_info *bdi = sb->s_bdi;
|
|
|
|
bdi_destroy(bdi);
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
sb->s_bdi = NULL;
|
|
}
|
|
#elif defined(HAVE_3ARGS_BDI_SETUP_AND_REGISTER)
|
|
static inline int
|
|
zpl_bdi_setup(struct super_block *sb, char *name)
|
|
{
|
|
struct backing_dev_info *bdi;
|
|
int error;
|
|
|
|
bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
|
|
error = bdi_setup_and_register(bdi, name, BDI_CAP_MAP_COPY);
|
|
if (error) {
|
|
kmem_free(sb->s_bdi, sizeof (struct backing_dev_info));
|
|
return (error);
|
|
}
|
|
|
|
sb->s_bdi = bdi;
|
|
|
|
return (0);
|
|
}
|
|
static inline void
|
|
zpl_bdi_destroy(struct super_block *sb)
|
|
{
|
|
struct backing_dev_info *bdi = sb->s_bdi;
|
|
|
|
bdi_destroy(bdi);
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
sb->s_bdi = NULL;
|
|
}
|
|
#else
|
|
extern atomic_long_t zfs_bdi_seq;
|
|
|
|
static inline int
|
|
zpl_bdi_setup(struct super_block *sb, char *name)
|
|
{
|
|
struct backing_dev_info *bdi;
|
|
int error;
|
|
|
|
bdi = kmem_zalloc(sizeof (struct backing_dev_info), KM_SLEEP);
|
|
bdi->name = name;
|
|
bdi->capabilities = BDI_CAP_MAP_COPY;
|
|
|
|
error = bdi_init(bdi);
|
|
if (error) {
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
return (error);
|
|
}
|
|
|
|
error = bdi_register(bdi, NULL, "%.28s-%ld", name,
|
|
atomic_long_inc_return(&zfs_bdi_seq));
|
|
if (error) {
|
|
bdi_destroy(bdi);
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
return (error);
|
|
}
|
|
|
|
sb->s_bdi = bdi;
|
|
|
|
return (0);
|
|
}
|
|
static inline void
|
|
zpl_bdi_destroy(struct super_block *sb)
|
|
{
|
|
struct backing_dev_info *bdi = sb->s_bdi;
|
|
|
|
bdi_destroy(bdi);
|
|
kmem_free(bdi, sizeof (struct backing_dev_info));
|
|
sb->s_bdi = NULL;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 4.14 adds SB_* flag definitions, define them to MS_* equivalents
|
|
* if not set.
|
|
*/
|
|
#ifndef SB_RDONLY
|
|
#define SB_RDONLY MS_RDONLY
|
|
#endif
|
|
|
|
#ifndef SB_SILENT
|
|
#define SB_SILENT MS_SILENT
|
|
#endif
|
|
|
|
#ifndef SB_ACTIVE
|
|
#define SB_ACTIVE MS_ACTIVE
|
|
#endif
|
|
|
|
#ifndef SB_POSIXACL
|
|
#define SB_POSIXACL MS_POSIXACL
|
|
#endif
|
|
|
|
#ifndef SB_MANDLOCK
|
|
#define SB_MANDLOCK MS_MANDLOCK
|
|
#endif
|
|
|
|
#ifndef SB_NOATIME
|
|
#define SB_NOATIME MS_NOATIME
|
|
#endif
|
|
|
|
/*
|
|
* 2.6.38 API change,
|
|
* LOOKUP_RCU flag introduced to distinguish rcu-walk from ref-walk cases.
|
|
*/
|
|
#ifndef LOOKUP_RCU
|
|
#define LOOKUP_RCU 0x0
|
|
#endif /* LOOKUP_RCU */
|
|
|
|
/*
|
|
* 3.2-rc1 API change,
|
|
* Add set_nlink() if it is not exported by the Linux kernel.
|
|
*
|
|
* i_nlink is read-only in Linux 3.2, but it can be set directly in
|
|
* earlier kernels.
|
|
*/
|
|
#ifndef HAVE_SET_NLINK
|
|
static inline void
|
|
set_nlink(struct inode *inode, unsigned int nlink)
|
|
{
|
|
inode->i_nlink = nlink;
|
|
}
|
|
#endif /* HAVE_SET_NLINK */
|
|
|
|
/*
|
|
* 3.3 API change,
|
|
* The VFS .create, .mkdir and .mknod callbacks were updated to take a
|
|
* umode_t type rather than an int. To cleanly handle both definitions
|
|
* the zpl_umode_t type is introduced and set accordingly.
|
|
*/
|
|
#ifdef HAVE_MKDIR_UMODE_T
|
|
typedef umode_t zpl_umode_t;
|
|
#else
|
|
typedef int zpl_umode_t;
|
|
#endif
|
|
|
|
/*
|
|
* 3.5 API change,
|
|
* The clear_inode() function replaces end_writeback() and introduces an
|
|
* ordering change regarding when the inode_sync_wait() occurs. See the
|
|
* configure check in config/kernel-clear-inode.m4 for full details.
|
|
*/
|
|
#if defined(HAVE_EVICT_INODE) && !defined(HAVE_CLEAR_INODE)
|
|
#define clear_inode(ip) end_writeback(ip)
|
|
#endif /* HAVE_EVICT_INODE && !HAVE_CLEAR_INODE */
|
|
|
|
/*
|
|
* 3.6 API change,
|
|
* The sget() helper function now takes the mount flags as an argument.
|
|
*/
|
|
#ifdef HAVE_5ARG_SGET
|
|
#define zpl_sget(type, cmp, set, fl, mtd) sget(type, cmp, set, fl, mtd)
|
|
#else
|
|
#define zpl_sget(type, cmp, set, fl, mtd) sget(type, cmp, set, mtd)
|
|
#endif /* HAVE_5ARG_SGET */
|
|
|
|
#if defined(SEEK_HOLE) && defined(SEEK_DATA) && !defined(HAVE_LSEEK_EXECUTE)
|
|
static inline loff_t
|
|
lseek_execute(
|
|
struct file *filp,
|
|
struct inode *inode,
|
|
loff_t offset,
|
|
loff_t maxsize)
|
|
{
|
|
if (offset < 0 && !(filp->f_mode & FMODE_UNSIGNED_OFFSET))
|
|
return (-EINVAL);
|
|
|
|
if (offset > maxsize)
|
|
return (-EINVAL);
|
|
|
|
if (offset != filp->f_pos) {
|
|
spin_lock(&filp->f_lock);
|
|
filp->f_pos = offset;
|
|
filp->f_version = 0;
|
|
spin_unlock(&filp->f_lock);
|
|
}
|
|
|
|
return (offset);
|
|
}
|
|
#endif /* SEEK_HOLE && SEEK_DATA && !HAVE_LSEEK_EXECUTE */
|
|
|
|
#if defined(CONFIG_FS_POSIX_ACL)
|
|
/*
|
|
* These functions safely approximates the behavior of posix_acl_release()
|
|
* which cannot be used because it calls the GPL-only symbol kfree_rcu().
|
|
* The in-kernel version, which can access the RCU, frees the ACLs after
|
|
* the grace period expires. Because we're unsure how long that grace
|
|
* period may be this implementation conservatively delays for 60 seconds.
|
|
* This is several orders of magnitude larger than expected grace period.
|
|
* At 60 seconds the kernel will also begin issuing RCU stall warnings.
|
|
*/
|
|
|
|
#include <linux/posix_acl.h>
|
|
|
|
#if defined(HAVE_POSIX_ACL_RELEASE) && !defined(HAVE_POSIX_ACL_RELEASE_GPL_ONLY)
|
|
#define zpl_posix_acl_release(arg) posix_acl_release(arg)
|
|
#else
|
|
void zpl_posix_acl_release_impl(struct posix_acl *);
|
|
|
|
static inline void
|
|
zpl_posix_acl_release(struct posix_acl *acl)
|
|
{
|
|
if ((acl == NULL) || (acl == ACL_NOT_CACHED))
|
|
return;
|
|
#ifdef HAVE_ACL_REFCOUNT
|
|
if (refcount_dec_and_test(&acl->a_refcount))
|
|
zpl_posix_acl_release_impl(acl);
|
|
#else
|
|
if (atomic_dec_and_test(&acl->a_refcount))
|
|
zpl_posix_acl_release_impl(acl);
|
|
#endif
|
|
}
|
|
#endif /* HAVE_POSIX_ACL_RELEASE */
|
|
|
|
#ifdef HAVE_SET_CACHED_ACL_USABLE
|
|
#define zpl_set_cached_acl(ip, ty, n) set_cached_acl(ip, ty, n)
|
|
#define zpl_forget_cached_acl(ip, ty) forget_cached_acl(ip, ty)
|
|
#else
|
|
static inline void
|
|
zpl_set_cached_acl(struct inode *ip, int type, struct posix_acl *newer)
|
|
{
|
|
struct posix_acl *older = NULL;
|
|
|
|
spin_lock(&ip->i_lock);
|
|
|
|
if ((newer != ACL_NOT_CACHED) && (newer != NULL))
|
|
posix_acl_dup(newer);
|
|
|
|
switch (type) {
|
|
case ACL_TYPE_ACCESS:
|
|
older = ip->i_acl;
|
|
rcu_assign_pointer(ip->i_acl, newer);
|
|
break;
|
|
case ACL_TYPE_DEFAULT:
|
|
older = ip->i_default_acl;
|
|
rcu_assign_pointer(ip->i_default_acl, newer);
|
|
break;
|
|
}
|
|
|
|
spin_unlock(&ip->i_lock);
|
|
|
|
zpl_posix_acl_release(older);
|
|
}
|
|
|
|
static inline void
|
|
zpl_forget_cached_acl(struct inode *ip, int type)
|
|
{
|
|
zpl_set_cached_acl(ip, type, (struct posix_acl *)ACL_NOT_CACHED);
|
|
}
|
|
#endif /* HAVE_SET_CACHED_ACL_USABLE */
|
|
|
|
#ifndef HAVE___POSIX_ACL_CHMOD
|
|
#ifdef HAVE_POSIX_ACL_CHMOD
|
|
#define __posix_acl_chmod(acl, gfp, mode) posix_acl_chmod(acl, gfp, mode)
|
|
#define __posix_acl_create(acl, gfp, mode) posix_acl_create(acl, gfp, mode)
|
|
#else
|
|
static inline int
|
|
__posix_acl_chmod(struct posix_acl **acl, int flags, umode_t umode)
|
|
{
|
|
struct posix_acl *oldacl = *acl;
|
|
mode_t mode = umode;
|
|
int error;
|
|
|
|
*acl = posix_acl_clone(*acl, flags);
|
|
zpl_posix_acl_release(oldacl);
|
|
|
|
if (!(*acl))
|
|
return (-ENOMEM);
|
|
|
|
error = posix_acl_chmod_masq(*acl, mode);
|
|
if (error) {
|
|
zpl_posix_acl_release(*acl);
|
|
*acl = NULL;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static inline int
|
|
__posix_acl_create(struct posix_acl **acl, int flags, umode_t *umodep)
|
|
{
|
|
struct posix_acl *oldacl = *acl;
|
|
mode_t mode = *umodep;
|
|
int error;
|
|
|
|
*acl = posix_acl_clone(*acl, flags);
|
|
zpl_posix_acl_release(oldacl);
|
|
|
|
if (!(*acl))
|
|
return (-ENOMEM);
|
|
|
|
error = posix_acl_create_masq(*acl, &mode);
|
|
*umodep = mode;
|
|
|
|
if (error < 0) {
|
|
zpl_posix_acl_release(*acl);
|
|
*acl = NULL;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
#endif /* HAVE_POSIX_ACL_CHMOD */
|
|
#endif /* HAVE___POSIX_ACL_CHMOD */
|
|
|
|
#ifdef HAVE_POSIX_ACL_EQUIV_MODE_UMODE_T
|
|
typedef umode_t zpl_equivmode_t;
|
|
#else
|
|
typedef mode_t zpl_equivmode_t;
|
|
#endif /* HAVE_POSIX_ACL_EQUIV_MODE_UMODE_T */
|
|
|
|
/*
|
|
* 4.8 API change,
|
|
* posix_acl_valid() now must be passed a namespace, the namespace from
|
|
* from super block associated with the given inode is used for this purpose.
|
|
*/
|
|
#ifdef HAVE_POSIX_ACL_VALID_WITH_NS
|
|
#define zpl_posix_acl_valid(ip, acl) posix_acl_valid(ip->i_sb->s_user_ns, acl)
|
|
#else
|
|
#define zpl_posix_acl_valid(ip, acl) posix_acl_valid(acl)
|
|
#endif
|
|
|
|
#endif /* CONFIG_FS_POSIX_ACL */
|
|
|
|
/*
|
|
* 2.6.38 API change,
|
|
* The is_owner_or_cap() function was renamed to inode_owner_or_capable().
|
|
*/
|
|
#ifdef HAVE_INODE_OWNER_OR_CAPABLE
|
|
#define zpl_inode_owner_or_capable(ip) inode_owner_or_capable(ip)
|
|
#else
|
|
#define zpl_inode_owner_or_capable(ip) is_owner_or_cap(ip)
|
|
#endif /* HAVE_INODE_OWNER_OR_CAPABLE */
|
|
|
|
/*
|
|
* 3.19 API change
|
|
* struct access f->f_dentry->d_inode was replaced by accessor function
|
|
* file_inode(f)
|
|
*/
|
|
#ifndef HAVE_FILE_INODE
|
|
static inline struct inode *file_inode(const struct file *f)
|
|
{
|
|
return (f->f_dentry->d_inode);
|
|
}
|
|
#endif /* HAVE_FILE_INODE */
|
|
|
|
/*
|
|
* 4.1 API change
|
|
* struct access file->f_path.dentry was replaced by accessor function
|
|
* file_dentry(f)
|
|
*/
|
|
#ifndef HAVE_FILE_DENTRY
|
|
static inline struct dentry *file_dentry(const struct file *f)
|
|
{
|
|
return (f->f_path.dentry);
|
|
}
|
|
#endif /* HAVE_FILE_DENTRY */
|
|
|
|
#ifdef HAVE_KUID_HELPERS
|
|
static inline uid_t zfs_uid_read_impl(struct inode *ip)
|
|
{
|
|
#ifdef HAVE_SUPER_USER_NS
|
|
return (from_kuid(ip->i_sb->s_user_ns, ip->i_uid));
|
|
#else
|
|
return (from_kuid(kcred->user_ns, ip->i_uid));
|
|
#endif
|
|
}
|
|
|
|
static inline uid_t zfs_uid_read(struct inode *ip)
|
|
{
|
|
return (zfs_uid_read_impl(ip));
|
|
}
|
|
|
|
static inline gid_t zfs_gid_read_impl(struct inode *ip)
|
|
{
|
|
#ifdef HAVE_SUPER_USER_NS
|
|
return (from_kgid(ip->i_sb->s_user_ns, ip->i_gid));
|
|
#else
|
|
return (from_kgid(kcred->user_ns, ip->i_gid));
|
|
#endif
|
|
}
|
|
|
|
static inline gid_t zfs_gid_read(struct inode *ip)
|
|
{
|
|
return (zfs_gid_read_impl(ip));
|
|
}
|
|
|
|
static inline void zfs_uid_write(struct inode *ip, uid_t uid)
|
|
{
|
|
#ifdef HAVE_SUPER_USER_NS
|
|
ip->i_uid = make_kuid(ip->i_sb->s_user_ns, uid);
|
|
#else
|
|
ip->i_uid = make_kuid(kcred->user_ns, uid);
|
|
#endif
|
|
}
|
|
|
|
static inline void zfs_gid_write(struct inode *ip, gid_t gid)
|
|
{
|
|
#ifdef HAVE_SUPER_USER_NS
|
|
ip->i_gid = make_kgid(ip->i_sb->s_user_ns, gid);
|
|
#else
|
|
ip->i_gid = make_kgid(kcred->user_ns, gid);
|
|
#endif
|
|
}
|
|
|
|
#else
|
|
static inline uid_t zfs_uid_read(struct inode *ip)
|
|
{
|
|
return (ip->i_uid);
|
|
}
|
|
|
|
static inline gid_t zfs_gid_read(struct inode *ip)
|
|
{
|
|
return (ip->i_gid);
|
|
}
|
|
|
|
static inline void zfs_uid_write(struct inode *ip, uid_t uid)
|
|
{
|
|
ip->i_uid = uid;
|
|
}
|
|
|
|
static inline void zfs_gid_write(struct inode *ip, gid_t gid)
|
|
{
|
|
ip->i_gid = gid;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 2.6.38 API change
|
|
*/
|
|
#ifdef HAVE_FOLLOW_DOWN_ONE
|
|
#define zpl_follow_down_one(path) follow_down_one(path)
|
|
#define zpl_follow_up(path) follow_up(path)
|
|
#else
|
|
#define zpl_follow_down_one(path) follow_down(path)
|
|
#define zpl_follow_up(path) follow_up(path)
|
|
#endif
|
|
|
|
/*
|
|
* 4.9 API change
|
|
*/
|
|
#ifndef HAVE_SETATTR_PREPARE
|
|
static inline int
|
|
setattr_prepare(struct dentry *dentry, struct iattr *ia)
|
|
{
|
|
return (inode_change_ok(dentry->d_inode, ia));
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 4.11 API change
|
|
* These macros are defined by kernel 4.11. We define them so that the same
|
|
* code builds under kernels < 4.11 and >= 4.11. The macros are set to 0 so
|
|
* that it will create obvious failures if they are accidentally used when built
|
|
* against a kernel >= 4.11.
|
|
*/
|
|
|
|
#ifndef STATX_BASIC_STATS
|
|
#define STATX_BASIC_STATS 0
|
|
#endif
|
|
|
|
#ifndef AT_STATX_SYNC_AS_STAT
|
|
#define AT_STATX_SYNC_AS_STAT 0
|
|
#endif
|
|
|
|
/*
|
|
* 4.11 API change
|
|
* 4.11 takes struct path *, < 4.11 takes vfsmount *
|
|
*/
|
|
|
|
#ifdef HAVE_VFSMOUNT_IOPS_GETATTR
|
|
#define ZPL_GETATTR_WRAPPER(func) \
|
|
static int \
|
|
func(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) \
|
|
{ \
|
|
struct path path = { .mnt = mnt, .dentry = dentry }; \
|
|
return func##_impl(&path, stat, STATX_BASIC_STATS, \
|
|
AT_STATX_SYNC_AS_STAT); \
|
|
}
|
|
#elif defined(HAVE_PATH_IOPS_GETATTR)
|
|
#define ZPL_GETATTR_WRAPPER(func) \
|
|
static int \
|
|
func(const struct path *path, struct kstat *stat, u32 request_mask, \
|
|
unsigned int query_flags) \
|
|
{ \
|
|
return (func##_impl(path, stat, request_mask, query_flags)); \
|
|
}
|
|
#else
|
|
#error
|
|
#endif
|
|
|
|
/*
|
|
* 4.9 API change
|
|
* Preferred interface to get the current FS time.
|
|
*/
|
|
#if !defined(HAVE_CURRENT_TIME)
|
|
static inline struct timespec
|
|
current_time(struct inode *ip)
|
|
{
|
|
return (timespec_trunc(current_kernel_time(), ip->i_sb->s_time_gran));
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 4.16 API change
|
|
* Added iversion interface for managing inode version field.
|
|
*/
|
|
#ifdef HAVE_INODE_SET_IVERSION
|
|
#include <linux/iversion.h>
|
|
#else
|
|
static inline void
|
|
inode_set_iversion(struct inode *ip, u64 val)
|
|
{
|
|
ip->i_version = val;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Returns true when called in the context of a 32-bit system call.
|
|
*/
|
|
static inline int
|
|
zpl_is_32bit_api(void)
|
|
{
|
|
#ifdef CONFIG_COMPAT
|
|
#ifdef HAVE_IN_COMPAT_SYSCALL
|
|
return (in_compat_syscall());
|
|
#else
|
|
return (is_compat_task());
|
|
#endif
|
|
#else
|
|
return (BITS_PER_LONG == 32);
|
|
#endif
|
|
}
|
|
|
|
#endif /* _ZFS_VFS_H */
|