aboutsummaryrefslogtreecommitdiffstats
path: root/fs/ext4/ext4_jbd2.c
blob: ad13a84644e1ff94000dda0ab8bbe09f05a417e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
/*
 * Interface between ext4 and JBD
 */

#include "ext4_jbd2.h"

int __ext4_journal_get_undo_access(const char *where, handle_t *handle,
				struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_get_undo_access(handle, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	}
	return err;
}

int __ext4_journal_get_write_access(const char *where, handle_t *handle,
				struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_get_write_access(handle, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	}
	return err;
}

int __ext4_journal_forget(const char *where, handle_t *handle,
				struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_forget(handle, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	}
	return err;
}

int __ext4_journal_revoke(const char *where, handle_t *handle,
				ext4_fsblk_t blocknr, struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_revoke(handle, blocknr, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	}
	return err;
}

int __ext4_journal_get_create_access(const char *where,
				handle_t *handle, struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_get_create_access(handle, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	}
	return err;
}

int __ext4_handle_dirty_metadata(const char *where, handle_t *handle,
				 struct inode *inode, struct buffer_head *bh)
{
	int err = 0;

	if (ext4_handle_valid(handle)) {
		err = jbd2_journal_dirty_metadata(handle, bh);
		if (err)
			ext4_journal_abort_handle(where, __func__, bh,
						  handle, err);
	} else {
		mark_buffer_dirty(bh);
		if (inode && inode_needs_sync(inode)) {
			sync_dirty_buffer(bh);
			if (buffer_req(bh) && !buffer_uptodate(bh)) {
				ext4_error(inode->i_sb, __func__,
					   "IO error syncing inode, "
					   "inode=%lu, block=%llu",
					   inode->i_ino,
					   (unsigned long long) bh->b_blocknr);
				err = -EIO;
			}
		}
	}
	return err;
}