btrfs: mark compressed range uptodate only if all bio succeed

In compression write endio sequence, the range which the compressed_bio
writes is marked as uptodate if the last bio of the compressed (sub)bios
is completed successfully. There could be previous bio which may
have failed which is recorded in cb->errors.

Set the writeback range as uptodate only if cb->errors is zero, as opposed
to checking only the last bio's status.

Backporting notes: in all versions up to 4.4 the last argument is always
replaced by "!cb->errors".

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 9a023ae0f98b4d90e13b9e80e368ae9ace569573..30d82cdf128cf4037cc3d779df80939e84b92929 100644 (file)
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -352,7 +352,7 @@ static void end_compressed_bio_write(struct bio *bio)
        btrfs_record_physical_zoned(inode, cb->start, bio);
        btrfs_writepage_endio_finish_ordered(BTRFS_I(inode), NULL,
                        cb->start, cb->start + cb->len - 1,
-                       bio->bi_status == BLK_STS_OK);
+                       !cb->errors);
 
        end_compressed_writeback(inode, cb);
        /* note, our inode could be gone now */