From a5969cabbb4660eab42b6ef0412cbbd1200cf14d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 12 Oct 2024 07:10:09 +0000
Subject: [PATCH] 修改led为gpio
---
kernel/fs/cachefiles/rdwr.c | 46 ++++++++++++++++++++--------------------------
1 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/kernel/fs/cachefiles/rdwr.c b/kernel/fs/cachefiles/rdwr.c
index f5bf107..8ffc40e 100644
--- a/kernel/fs/cachefiles/rdwr.c
+++ b/kernel/fs/cachefiles/rdwr.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* Storage object read/write
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
*/
#include <linux/mount.h>
@@ -28,17 +24,16 @@
container_of(wait, struct cachefiles_one_read, monitor);
struct cachefiles_object *object;
struct fscache_retrieval *op = monitor->op;
- struct wait_bit_key *key = _key;
+ struct wait_page_key *key = _key;
struct page *page = wait->private;
ASSERT(key);
_enter("{%lu},%u,%d,{%p,%u}",
monitor->netfs_page->index, mode, sync,
- key->flags, key->bit_nr);
+ key->page, key->bit_nr);
- if (key->flags != &page->flags ||
- key->bit_nr != PG_locked)
+ if (key->page != page || key->bit_nr != PG_locked)
return 0;
_debug("--- monitor %p %lx ---", page, page->flags);
@@ -401,9 +396,9 @@
struct cachefiles_object *object;
struct cachefiles_cache *cache;
struct inode *inode;
- sector_t block0, block;
+ sector_t block;
unsigned shift;
- int ret;
+ int ret, ret2;
object = container_of(op->op.object,
struct cachefiles_object, fscache);
@@ -417,8 +412,6 @@
inode = d_backing_inode(object->backer);
ASSERT(S_ISREG(inode->i_mode));
- ASSERT(inode->i_mapping->a_ops->bmap);
- ASSERT(inode->i_mapping->a_ops->readpages);
/* calculate the shift required to use bmap */
shift = PAGE_SHIFT - inode->i_sb->s_blocksize_bits;
@@ -433,12 +426,14 @@
* enough for this as it doesn't indicate errors, but it's all we've
* got for the moment
*/
- block0 = page->index;
- block0 <<= shift;
+ block = page->index;
+ block <<= shift;
- block = inode->i_mapping->a_ops->bmap(inode->i_mapping, block0);
+ ret2 = bmap(inode, &block);
+ ASSERT(ret2 == 0);
+
_debug("%llx -> %llx",
- (unsigned long long) block0,
+ (unsigned long long) (page->index << shift),
(unsigned long long) block);
if (block) {
@@ -716,8 +711,6 @@
inode = d_backing_inode(object->backer);
ASSERT(S_ISREG(inode->i_mode));
- ASSERT(inode->i_mapping->a_ops->bmap);
- ASSERT(inode->i_mapping->a_ops->readpages);
/* calculate the shift required to use bmap */
shift = PAGE_SHIFT - inode->i_sb->s_blocksize_bits;
@@ -733,7 +726,7 @@
ret = space ? -ENODATA : -ENOBUFS;
list_for_each_entry_safe(page, _n, pages, lru) {
- sector_t block0, block;
+ sector_t block;
/* we assume the absence or presence of the first block is a
* good enough indication for the page as a whole
@@ -741,13 +734,14 @@
* good enough for this as it doesn't indicate errors, but
* it's all we've got for the moment
*/
- block0 = page->index;
- block0 <<= shift;
+ block = page->index;
+ block <<= shift;
- block = inode->i_mapping->a_ops->bmap(inode->i_mapping,
- block0);
+ ret2 = bmap(inode, &block);
+ ASSERT(ret2 == 0);
+
_debug("%llx -> %llx",
- (unsigned long long) block0,
+ (unsigned long long) (page->index << shift),
(unsigned long long) block);
if (block) {
@@ -941,7 +935,7 @@
}
data = kmap(page);
- ret = __kernel_write(file, data, len, &pos);
+ ret = kernel_write(file, data, len, &pos);
kunmap(page);
fput(file);
if (ret != len)
--
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