修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/fs/cachefiles/rdwr.c
..
..
@@ -1,12 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /* Storage object read/write
2
3
  *
3
4
  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4
5
  * Written by David Howells (dhowells@redhat.com)
5
- *
6
- * This program is free software; you can redistribute it and/or
7
- * modify it under the terms of the GNU General Public Licence
8
- * as published by the Free Software Foundation; either version
9
- * 2 of the Licence, or (at your option) any later version.
10
6
  */
11
7
 
12
8
 #include <linux/mount.h>
..
..
@@ -28,17 +24,16 @@
28
24
 		container_of(wait, struct cachefiles_one_read, monitor);
29
25
 	struct cachefiles_object *object;
30
26
 	struct fscache_retrieval *op = monitor->op;
31
-	struct wait_bit_key *key = _key;
27
+	struct wait_page_key *key = _key;
32
28
 	struct page *page = wait->private;
33
29
 
34
30
 	ASSERT(key);
35
31
 
36
32
 	_enter("{%lu},%u,%d,{%p,%u}",
37
33
 	       monitor->netfs_page->index, mode, sync,
38
-	       key->flags, key->bit_nr);
34
+	       key->page, key->bit_nr);
39
35
 
40
-	if (key->flags != &page->flags ||
41
-	    key->bit_nr != PG_locked)
36
+	if (key->page != page || key->bit_nr != PG_locked)
42
37
 		return 0;
43
38
 
44
39
 	_debug("--- monitor %p %lx ---", page, page->flags);
..
..
@@ -401,9 +396,9 @@
401
396
 	struct cachefiles_object *object;
402
397
 	struct cachefiles_cache *cache;
403
398
 	struct inode *inode;
404
-	sector_t block0, block;
399
+	sector_t block;
405
400
 	unsigned shift;
406
-	int ret;
401
+	int ret, ret2;
407
402
 
408
403
 	object = container_of(op->op.object,
409
404
 			      struct cachefiles_object, fscache);
..
..
@@ -417,8 +412,6 @@
417
412
 
418
413
 	inode = d_backing_inode(object->backer);
419
414
 	ASSERT(S_ISREG(inode->i_mode));
420
-	ASSERT(inode->i_mapping->a_ops->bmap);
421
-	ASSERT(inode->i_mapping->a_ops->readpages);
422
415
 
423
416
 	/* calculate the shift required to use bmap */
424
417
 	shift = PAGE_SHIFT - inode->i_sb->s_blocksize_bits;
..
..
@@ -433,12 +426,14 @@
433
426
 	 *   enough for this as it doesn't indicate errors, but it's all we've
434
427
 	 *   got for the moment
435
428
 	 */
436
-	block0 = page->index;
437
-	block0 <<= shift;
429
+	block = page->index;
430
+	block <<= shift;
438
431
 
439
-	block = inode->i_mapping->a_ops->bmap(inode->i_mapping, block0);
432
+	ret2 = bmap(inode, &block);
433
+	ASSERT(ret2 == 0);
434
+
440
435
 	_debug("%llx -> %llx",
441
-	       (unsigned long long) block0,
436
+	       (unsigned long long) (page->index << shift),
442
437
 	       (unsigned long long) block);
443
438
 
444
439
 	if (block) {
..
..
@@ -716,8 +711,6 @@
716
711
 
717
712
 	inode = d_backing_inode(object->backer);
718
713
 	ASSERT(S_ISREG(inode->i_mode));
719
-	ASSERT(inode->i_mapping->a_ops->bmap);
720
-	ASSERT(inode->i_mapping->a_ops->readpages);
721
714
 
722
715
 	/* calculate the shift required to use bmap */
723
716
 	shift = PAGE_SHIFT - inode->i_sb->s_blocksize_bits;
..
..
@@ -733,7 +726,7 @@
733
726
 
734
727
 	ret = space ? -ENODATA : -ENOBUFS;
735
728
 	list_for_each_entry_safe(page, _n, pages, lru) {
736
-		sector_t block0, block;
729
+		sector_t block;
737
730
 
738
731
 		/* we assume the absence or presence of the first block is a
739
732
 		 * good enough indication for the page as a whole
..
..
@@ -741,13 +734,14 @@
741
734
 		 *   good enough for this as it doesn't indicate errors, but
742
735
 		 *   it's all we've got for the moment
743
736
 		 */
744
-		block0 = page->index;
745
-		block0 <<= shift;
737
+		block = page->index;
738
+		block <<= shift;
746
739
 
747
-		block = inode->i_mapping->a_ops->bmap(inode->i_mapping,
748
-						      block0);
740
+		ret2 = bmap(inode, &block);
741
+		ASSERT(ret2 == 0);
742
+
749
743
 		_debug("%llx -> %llx",
750
-		       (unsigned long long) block0,
744
+		       (unsigned long long) (page->index << shift),
751
745
 		       (unsigned long long) block);
752
746
 
753
747
 		if (block) {
..
..
@@ -941,7 +935,7 @@
941
935
 	}
942
936
 
943
937
 	data = kmap(page);
944
-	ret = __kernel_write(file, data, len, &pos);
938
+	ret = kernel_write(file, data, len, &pos);
945
939
 	kunmap(page);
946
940
 	fput(file);
947
941
 	if (ret != len)