/[packages]/updates/8/kernel/current/SOURCES/btrfs-mark-compressed-range-uptodate-only-if-all-bio-succeed.patch
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Contents of /updates/8/kernel/current/SOURCES/btrfs-mark-compressed-range-uptodate-only-if-all-bio-succeed.patch

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Revision 1738277 - (show annotations) (download)
Sat Jul 31 10:13:28 2021 UTC (2 years, 7 months ago) by tmb
File size: 1546 byte(s)
add current -stable queue
1 From 240246f6b913b0c23733cfd2def1d283f8cc9bbe Mon Sep 17 00:00:00 2001
2 From: Goldwyn Rodrigues <rgoldwyn@suse.de>
3 Date: Fri, 9 Jul 2021 11:29:22 -0500
4 Subject: btrfs: mark compressed range uptodate only if all bio succeed
5
6 From: Goldwyn Rodrigues <rgoldwyn@suse.de>
7
8 commit 240246f6b913b0c23733cfd2def1d283f8cc9bbe upstream.
9
10 In compression write endio sequence, the range which the compressed_bio
11 writes is marked as uptodate if the last bio of the compressed (sub)bios
12 is completed successfully. There could be previous bio which may
13 have failed which is recorded in cb->errors.
14
15 Set the writeback range as uptodate only if cb->errors is zero, as opposed
16 to checking only the last bio's status.
17
18 Backporting notes: in all versions up to 4.4 the last argument is always
19 replaced by "!cb->errors".
20
21 CC: stable@vger.kernel.org # 4.4+
22 Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
23 Reviewed-by: David Sterba <dsterba@suse.com>
24 Signed-off-by: David Sterba <dsterba@suse.com>
25 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
26 ---
27 fs/btrfs/compression.c | 2 +-
28 1 file changed, 1 insertion(+), 1 deletion(-)
29
30 --- a/fs/btrfs/compression.c
31 +++ b/fs/btrfs/compression.c
32 @@ -340,7 +340,7 @@ static void end_compressed_bio_write(str
33 cb->compressed_pages[0]->mapping = cb->inode->i_mapping;
34 btrfs_writepage_endio_finish_ordered(cb->compressed_pages[0],
35 cb->start, cb->start + cb->len - 1,
36 - bio->bi_status == BLK_STS_OK);
37 + !cb->errors);
38 cb->compressed_pages[0]->mapping = NULL;
39
40 end_compressed_writeback(inode, cb);

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