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Move platform specific parts of zfs_znode.h to platform code
Some of the znode fields are different and functions consuming an inode don't exist on FreeBSD. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Signed-off-by: Matt Macy <mmacy@FreeBSD.org> Closes #9536
This commit is contained in:
Matthew Macy
Brian Behlendorf
parent
1c47c2c42c
commit
27ece2ee4d
@ -20,6 +20,7 @@ KERNEL_H = \
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$(top_srcdir)/include/os/linux/zfs/sys/zfs_dir.h \
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$(top_srcdir)/include/os/linux/zfs/sys/zfs_vfsops.h \
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$(top_srcdir)/include/os/linux/zfs/sys/zfs_vnops.h \
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$(top_srcdir)/include/os/linux/zfs/sys/zfs_znode_impl.h \
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$(top_srcdir)/include/os/linux/zfs/sys/zpl.h
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if CONFIG_KERNEL
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164
include/os/linux/zfs/sys/zfs_znode_impl.h
Normal file
164
include/os/linux/zfs/sys/zfs_znode_impl.h
Normal file
@ -0,0 +1,164 @@
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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* Copyright 2016 Nexenta Systems, Inc. All rights reserved.
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*/
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#ifndef _SYS_ZFS_ZNODE_IMPL_H
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#define _SYS_ZFS_ZNODE_IMPL_H
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#ifndef _KERNEL
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#error "no user serviceable parts within"
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#endif
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#include <sys/isa_defs.h>
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#include <sys/types32.h>
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#include <sys/list.h>
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#include <sys/dmu.h>
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#include <sys/sa.h>
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#include <sys/zfs_vfsops.h>
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#include <sys/rrwlock.h>
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#include <sys/zfs_sa.h>
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#include <sys/zfs_stat.h>
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#include <sys/zfs_rlock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ZNODE_OS_FIELDS \
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struct inode z_inode;
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/*
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* Convert between znode pointers and inode pointers
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*/
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#define ZTOI(znode) (&((znode)->z_inode))
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#define ITOZ(inode) (container_of((inode), znode_t, z_inode))
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#define ZTOZSB(znode) ((zfsvfs_t *)(ZTOI(znode)->i_sb->s_fs_info))
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#define ITOZSB(inode) ((zfsvfs_t *)((inode)->i_sb->s_fs_info))
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#define ZTOTYPE(zp) (ZTOI(zp)->i_mode)
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#define ZTOGID(zp) (ZTOI(zp)->i_gid)
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#define ZTOUID(zp) (ZTOI(zp)->i_uid)
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#define ZTONLNK(zp) (ZTOI(zp)->i_nlink)
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#define Z_ISBLK(type) S_ISBLK(type)
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#define Z_ISCHR(type) S_ISCHR(type)
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#define Z_ISLNK(type) S_ISLNK(type)
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#define Z_ISDEV(type) (S_ISCHR(type) || S_ISBLK(type) || S_ISFIFO(type))
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/* Called on entry to each ZFS inode and vfs operation. */
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#define ZFS_ENTER_ERROR(zfsvfs, error) \
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do { \
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rrm_enter_read(&(zfsvfs)->z_teardown_lock, FTAG); \
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if ((zfsvfs)->z_unmounted) { \
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ZFS_EXIT(zfsvfs); \
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return (error); \
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} \
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} while (0)
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#define ZFS_ENTER(zfsvfs) ZFS_ENTER_ERROR(zfsvfs, EIO)
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#define ZPL_ENTER(zfsvfs) ZFS_ENTER_ERROR(zfsvfs, -EIO)
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/* Must be called before exiting the operation. */
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#define ZFS_EXIT(zfsvfs) \
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do { \
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rrm_exit(&(zfsvfs)->z_teardown_lock, FTAG); \
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} while (0)
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#define ZPL_EXIT(zfsvfs) ZFS_EXIT(zfsvfs)
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/* Verifies the znode is valid. */
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#define ZFS_VERIFY_ZP_ERROR(zp, error) \
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do { \
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if ((zp)->z_sa_hdl == NULL) { \
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ZFS_EXIT(ZTOZSB(zp)); \
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return (error); \
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} \
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} while (0)
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#define ZFS_VERIFY_ZP(zp) ZFS_VERIFY_ZP_ERROR(zp, EIO)
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#define ZPL_VERIFY_ZP(zp) ZFS_VERIFY_ZP_ERROR(zp, -EIO)
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/*
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* Macros for dealing with dmu_buf_hold
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*/
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#define ZFS_OBJ_MTX_SZ 64
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#define ZFS_OBJ_MTX_MAX (1024 * 1024)
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#define ZFS_OBJ_HASH(zfsvfs, obj) ((obj) & ((zfsvfs->z_hold_size) - 1))
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extern unsigned int zfs_object_mutex_size;
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/*
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* Encode ZFS stored time values from a struct timespec / struct timespec64.
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*/
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#define ZFS_TIME_ENCODE(tp, stmp) \
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do { \
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(stmp)[0] = (uint64_t)(tp)->tv_sec; \
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(stmp)[1] = (uint64_t)(tp)->tv_nsec; \
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} while (0)
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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/*
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* Decode ZFS stored time values to a struct timespec64
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* 4.18 and newer kernels.
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*/
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#define ZFS_TIME_DECODE(tp, stmp) \
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do { \
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(tp)->tv_sec = (time64_t)(stmp)[0]; \
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(tp)->tv_nsec = (long)(stmp)[1]; \
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} while (0)
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#else
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/*
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* Decode ZFS stored time values to a struct timespec
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* 4.17 and older kernels.
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*/
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#define ZFS_TIME_DECODE(tp, stmp) \
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do { \
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(tp)->tv_sec = (time_t)(stmp)[0]; \
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(tp)->tv_nsec = (long)(stmp)[1]; \
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} while (0)
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#endif /* HAVE_INODE_TIMESPEC64_TIMES */
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struct znode;
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extern int zfs_sync(struct super_block *, int, cred_t *);
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extern int zfs_inode_alloc(struct super_block *, struct inode **ip);
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extern void zfs_inode_destroy(struct inode *);
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extern void zfs_inode_update(struct znode *);
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extern void zfs_mark_inode_dirty(struct inode *);
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extern boolean_t zfs_relatime_need_update(const struct inode *);
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#if defined(HAVE_UIO_RW)
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extern caddr_t zfs_map_page(page_t *, enum seg_rw);
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extern void zfs_unmap_page(page_t *, caddr_t);
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#endif /* HAVE_UIO_RW */
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extern zil_get_data_t zfs_get_data;
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extern zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE];
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extern int zfsfstype;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ZFS_ZNODE_IMPL_H */
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@ -27,18 +27,6 @@
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#ifndef _SYS_FS_ZFS_ZNODE_H
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#define _SYS_FS_ZFS_ZNODE_H
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#ifdef _KERNEL
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#include <sys/isa_defs.h>
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#include <sys/types32.h>
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#include <sys/list.h>
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#include <sys/dmu.h>
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#include <sys/sa.h>
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#include <sys/zfs_vfsops.h>
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#include <sys/rrwlock.h>
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#include <sys/zfs_sa.h>
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#include <sys/zfs_stat.h>
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#include <sys/zfs_rlock.h>
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#endif
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#include <sys/zfs_acl.h>
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#include <sys/zil.h>
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#include <sys/zfs_project.h>
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@ -169,12 +157,16 @@ extern "C" {
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#define ZFS_DIRENT_TYPE(de) BF64_GET(de, 60, 4)
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#define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
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extern int zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len);
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#ifdef _KERNEL
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#include <sys/zfs_znode_impl.h>
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/*
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* Directory entry locks control access to directory entries.
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* They are used to protect creates, deletes, and renames.
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* Each directory znode has a mutex and a list of locked names.
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*/
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#ifdef _KERNEL
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typedef struct zfs_dirlock {
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char *dl_name; /* directory entry being locked */
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uint32_t dl_sharecnt; /* 0 if exclusive, > 0 if shared */
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@ -217,7 +209,12 @@ typedef struct znode {
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uint64_t z_projid; /* project ID */
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list_node_t z_link_node; /* all znodes in fs link */
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sa_handle_t *z_sa_hdl; /* handle to sa data */
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struct inode z_inode; /* generic vfs inode */
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/*
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* Platform specific field, defined by each platform and only
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* accessable from platform specific code.
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*/
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ZNODE_OS_FIELDS;
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} znode_t;
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typedef struct znode_hold {
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@ -234,110 +231,6 @@ zfs_inherit_projid(znode_t *dzp)
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ZFS_DEFAULT_PROJID);
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}
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/*
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* Range locking rules
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* --------------------
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* 1. When truncating a file (zfs_create, zfs_setattr, zfs_space) the whole
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* file range needs to be locked as RL_WRITER. Only then can the pages be
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* freed etc and zp_size reset. zp_size must be set within range lock.
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* 2. For writes and punching holes (zfs_write & zfs_space) just the range
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* being written or freed needs to be locked as RL_WRITER.
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* Multiple writes at the end of the file must coordinate zp_size updates
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* to ensure data isn't lost. A compare and swap loop is currently used
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* to ensure the file size is at least the offset last written.
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* 3. For reads (zfs_read, zfs_get_data & zfs_putapage) just the range being
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* read needs to be locked as RL_READER. A check against zp_size can then
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* be made for reading beyond end of file.
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*/
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/*
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* Convert between znode pointers and inode pointers
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*/
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#define ZTOI(znode) (&((znode)->z_inode))
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#define ITOZ(inode) (container_of((inode), znode_t, z_inode))
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#define ZTOZSB(znode) ((zfsvfs_t *)(ZTOI(znode)->i_sb->s_fs_info))
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#define ITOZSB(inode) ((zfsvfs_t *)((inode)->i_sb->s_fs_info))
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#define ZTOTYPE(zp) (ZTOI(zp)->i_mode)
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#define ZTOGID(zp) (ZTOI(zp)->i_gid)
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#define ZTOUID(zp) (ZTOI(zp)->i_uid)
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#define ZTONLNK(zp) (ZTOI(zp)->i_nlink)
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#define Z_ISBLK(type) S_ISBLK(type)
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#define Z_ISCHR(type) S_ISCHR(type)
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#define Z_ISLNK(type) S_ISLNK(type)
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#define S_ISDEV(type) (S_ISCHR(type) || S_ISBLK(type) || S_ISFIFO(type))
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/* Called on entry to each ZFS inode and vfs operation. */
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#define ZFS_ENTER_ERROR(zfsvfs, error) \
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do { \
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rrm_enter_read(&(zfsvfs)->z_teardown_lock, FTAG); \
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if ((zfsvfs)->z_unmounted) { \
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ZFS_EXIT(zfsvfs); \
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return (error); \
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} \
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} while (0)
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#define ZFS_ENTER(zfsvfs) ZFS_ENTER_ERROR(zfsvfs, EIO)
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#define ZPL_ENTER(zfsvfs) ZFS_ENTER_ERROR(zfsvfs, -EIO)
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/* Must be called before exiting the operation. */
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#define ZFS_EXIT(zfsvfs) \
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do { \
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rrm_exit(&(zfsvfs)->z_teardown_lock, FTAG); \
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} while (0)
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#define ZPL_EXIT(zfsvfs) ZFS_EXIT(zfsvfs)
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/* Verifies the znode is valid. */
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#define ZFS_VERIFY_ZP_ERROR(zp, error) \
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do { \
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if ((zp)->z_sa_hdl == NULL) { \
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ZFS_EXIT(ZTOZSB(zp)); \
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return (error); \
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} \
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} while (0)
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#define ZFS_VERIFY_ZP(zp) ZFS_VERIFY_ZP_ERROR(zp, EIO)
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#define ZPL_VERIFY_ZP(zp) ZFS_VERIFY_ZP_ERROR(zp, -EIO)
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/*
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* Macros for dealing with dmu_buf_hold
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*/
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#define ZFS_OBJ_MTX_SZ 64
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#define ZFS_OBJ_MTX_MAX (1024 * 1024)
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#define ZFS_OBJ_HASH(zfsvfs, obj) ((obj) & ((zfsvfs->z_hold_size) - 1))
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extern unsigned int zfs_object_mutex_size;
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/*
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* Encode ZFS stored time values from a struct timespec / struct timespec64.
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*/
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#define ZFS_TIME_ENCODE(tp, stmp) \
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do { \
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(stmp)[0] = (uint64_t)(tp)->tv_sec; \
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(stmp)[1] = (uint64_t)(tp)->tv_nsec; \
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} while (0)
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#if defined(HAVE_INODE_TIMESPEC64_TIMES)
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/*
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* Decode ZFS stored time values to a struct timespec64
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* 4.18 and newer kernels.
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*/
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#define ZFS_TIME_DECODE(tp, stmp) \
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do { \
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(tp)->tv_sec = (time64_t)(stmp)[0]; \
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(tp)->tv_nsec = (long)(stmp)[1]; \
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} while (0)
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#else
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/*
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* Decode ZFS stored time values to a struct timespec
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* 4.17 and older kernels.
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*/
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#define ZFS_TIME_DECODE(tp, stmp) \
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do { \
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(tp)->tv_sec = (time_t)(stmp)[0]; \
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(tp)->tv_nsec = (long)(stmp)[1]; \
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} while (0)
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#endif /* HAVE_INODE_TIMESPEC64_TIMES */
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/*
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* Timestamp defines
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*/
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@ -362,17 +255,11 @@ extern void zfs_zinactive(znode_t *);
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extern void zfs_znode_delete(znode_t *, dmu_tx_t *);
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extern void zfs_remove_op_tables(void);
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extern int zfs_create_op_tables(void);
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extern int zfs_sync(struct super_block *, int, cred_t *);
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extern dev_t zfs_cmpldev(uint64_t);
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extern int zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value);
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extern int zfs_get_stats(objset_t *os, nvlist_t *nv);
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extern boolean_t zfs_get_vfs_flag_unmounted(objset_t *os);
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extern void zfs_znode_dmu_fini(znode_t *);
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extern int zfs_inode_alloc(struct super_block *, struct inode **ip);
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extern void zfs_inode_destroy(struct inode *);
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extern void zfs_inode_update(znode_t *);
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extern void zfs_mark_inode_dirty(struct inode *);
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extern boolean_t zfs_relatime_need_update(const struct inode *);
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extern void zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
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znode_t *dzp, znode_t *zp, char *name, vsecattr_t *, zfs_fuid_info_t *,
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@ -400,19 +287,7 @@ extern void zfs_log_acl(zilog_t *zilog, dmu_tx_t *tx, znode_t *zp,
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extern void zfs_xvattr_set(znode_t *zp, xvattr_t *xvap, dmu_tx_t *tx);
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extern void zfs_upgrade(zfsvfs_t *zfsvfs, dmu_tx_t *tx);
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#if defined(HAVE_UIO_RW)
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extern caddr_t zfs_map_page(page_t *, enum seg_rw);
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extern void zfs_unmap_page(page_t *, caddr_t);
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#endif /* HAVE_UIO_RW */
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extern zil_get_data_t zfs_get_data;
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extern zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE];
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extern int zfsfstype;
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#endif /* _KERNEL */
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extern int zfs_obj_to_path(objset_t *osp, uint64_t obj, char *buf, int len);
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#endif
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#ifdef __cplusplus
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}
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#endif
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@ -2159,8 +2159,8 @@ static int
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zfs_zaccess_dataset_check(znode_t *zp, uint32_t v4_mode)
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{
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if ((v4_mode & WRITE_MASK) && (zfs_is_readonly(ZTOZSB(zp))) &&
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(!S_ISDEV(ZTOI(zp)->i_mode) ||
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(S_ISDEV(ZTOI(zp)->i_mode) && (v4_mode & WRITE_MASK_ATTRS)))) {
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(!Z_ISDEV(ZTOI(zp)->i_mode) ||
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(Z_ISDEV(ZTOI(zp)->i_mode) && (v4_mode & WRITE_MASK_ATTRS)))) {
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return (SET_ERROR(EROFS));
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}
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@ -38,6 +38,20 @@
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* rangelock_reduce(lr, off, len); // optional
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||||
* rangelock_exit(lr);
|
||||
*
|
||||
* Range locking rules
|
||||
* --------------------
|
||||
* 1. When truncating a file (zfs_create, zfs_setattr, zfs_space) the whole
|
||||
* file range needs to be locked as RL_WRITER. Only then can the pages be
|
||||
* freed etc and zp_size reset. zp_size must be set within range lock.
|
||||
* 2. For writes and punching holes (zfs_write & zfs_space) just the range
|
||||
* being written or freed needs to be locked as RL_WRITER.
|
||||
* Multiple writes at the end of the file must coordinate zp_size updates
|
||||
* to ensure data isn't lost. A compare and swap loop is currently used
|
||||
* to ensure the file size is at least the offset last written.
|
||||
* 3. For reads (zfs_read, zfs_get_data & zfs_putapage) just the range being
|
||||
* read needs to be locked as RL_READER. A check against zp_size can then
|
||||
* be made for reading beyond end of file.
|
||||
*
|
||||
* AVL tree
|
||||
* --------
|
||||
* An AVL tree is used to maintain the state of the existing ranges
|
||||
@ -99,6 +113,7 @@
|
||||
#include <sys/zfs_context.h>
|
||||
#include <sys/zfs_rlock.h>
|
||||
|
||||
|
||||
/*
|
||||
* AVL comparison function used to order range locks
|
||||
* Locks are ordered on the start offset of the range.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user