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authorColy Li <colyli@suse.de>2019-06-28 19:59:30 +0800
committerJens Axboe <axboe@kernel.dk>2019-06-28 07:39:14 -0600
commit08ec1e6282f271698f0053983fab89de6e1a8217 (patch)
treec1b406c4b3772adf5808d8a18b443cf7317f1c4b /drivers
parent578df99b1b0531d19af956530fe4da63d01a1604 (diff)
downloadlinux-08ec1e6282f271698f0053983fab89de6e1a8217.tar.gz
bcache: add io error counting in write_bdev_super_endio()
When backing device super block is written by bch_write_bdev_super(),
the bio complete callback write_bdev_super_endio() simply ignores I/O
status. Indeed such write request also contribute to backing device
health status if the request failed.

This patch checkes bio->bi_status in write_bdev_super_endio(), if there
is error, bch_count_backing_io_errors() will be called to count an I/O
error to dc->io_errors.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/md/bcache/super.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index dc6702c2c4b6..73466bda12a7 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -197,7 +197,9 @@ err:
 static void write_bdev_super_endio(struct bio *bio)
 {
 	struct cached_dev *dc = bio->bi_private;
-	/* XXX: error checking */
+
+	if (bio->bi_status)
+		bch_count_backing_io_errors(dc, bio);
 
 	closure_put(&dc->sb_write);
 }