mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2026-03-12 05:16:19 +03:00
7e33476a7c
The macro 'flush_dcache_page(...)' modifies the page flags, but in Linux 6.18 the type of the page flags changed from 'unsigned long' to the struct type 'memdesc_flags_t' with a single member 'f' which is the page flags field. Signed-off-by: Erik Larsson <catacombae@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Reviewed-by: Tony Hutter <hutter2@llnl.gov>
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
// SPDX-License-Identifier: CDDL-1.0
|
|
/*
|
|
* 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 https://opensource.org/licenses/CDDL-1.0.
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _ZFS_DCACHE_H
|
|
#define _ZFS_DCACHE_H
|
|
|
|
#include <linux/dcache.h>
|
|
|
|
#define dname(dentry) ((char *)((dentry)->d_name.name))
|
|
#define dlen(dentry) ((int)((dentry)->d_name.len))
|
|
|
|
#define d_alias d_u.d_alias
|
|
|
|
#ifdef HAVE_MM_PAGE_FLAGS_STRUCT
|
|
/*
|
|
* Starting from Linux 6.18, the 'flags' field in 'struct page' is defined
|
|
* to a struct ('memdesc_flags_t' typedef) instead of an unsigned long for
|
|
* improved typesafety.
|
|
*/
|
|
#define page_flags flags.f
|
|
#else
|
|
#define page_flags flags
|
|
#endif
|
|
|
|
/*
|
|
* Starting from Linux 5.13, flush_dcache_page() becomes an inline function
|
|
* and under some configurations, may indirectly referencing GPL-only
|
|
* symbols, e.g., cpu_feature_keys on powerpc and PageHuge on riscv.
|
|
* Override this function when it is detected being GPL-only.
|
|
*/
|
|
#if defined __powerpc__ && defined HAVE_FLUSH_DCACHE_PAGE_GPL_ONLY
|
|
#include <linux/simd_powerpc.h>
|
|
#define flush_dcache_page(page) do { \
|
|
if (!cpu_has_feature(CPU_FTR_COHERENT_ICACHE) && \
|
|
test_bit(PG_dcache_clean, &(page)->page_flags)) \
|
|
clear_bit(PG_dcache_clean, &(page)->page_flags);\
|
|
} while (0)
|
|
#endif
|
|
/*
|
|
* For riscv implementation, the use of PageHuge can be safely removed.
|
|
* Because it handles pages allocated by HugeTLB, while flush_dcache_page
|
|
* in zfs module is only called on kernel pages.
|
|
*/
|
|
#if defined __riscv && defined HAVE_FLUSH_DCACHE_PAGE_GPL_ONLY
|
|
#define flush_dcache_page(page) do { \
|
|
if (test_bit(PG_dcache_clean, &(page)->page_flags)) \
|
|
clear_bit(PG_dcache_clean, &(page)->page_flags);\
|
|
} while (0)
|
|
#endif
|
|
|
|
/*
|
|
* Walk and invalidate all dentry aliases of an inode
|
|
* unless it's a mountpoint
|
|
*/
|
|
static inline void
|
|
zpl_d_drop_aliases(struct inode *inode)
|
|
{
|
|
struct dentry *dentry;
|
|
spin_lock(&inode->i_lock);
|
|
hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
|
|
if (!IS_ROOT(dentry) && !d_mountpoint(dentry) &&
|
|
(dentry->d_inode == inode)) {
|
|
d_drop(dentry);
|
|
}
|
|
}
|
|
spin_unlock(&inode->i_lock);
|
|
}
|
|
#endif /* _ZFS_DCACHE_H */
|