Btrfs is sometimes calling bio_endio twice on the same bio while
we chain things. This makes sure we don't trip over new assertions in
fs/bio.c
Signed-off-by: Chris Mason <chris.ma...@fusionio.com>
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 7fcac70..5b30360 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2289,6 +2289,10 @@ static void btrfsic_bio_end_io(struct bio *bp, int
bio_error_status)
block = next_block;
} while (NULL != block);
+ /*
+ * since we're not using bio_endio here, we don't need to worry about
+ * the remaining count
+ */
bp->bi_end_io(bp, bio_error_status);
}
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 62176ad..786ddac 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1684,7 +1684,7 @@ static void end_workqueue_fn(struct btrfs_work *work)
bio->bi_private = end_io_wq->private;
bio->bi_end_io = end_io_wq->end_io;
kfree(end_io_wq);
- bio_endio(bio, error);
+ bio_endio_nodec(bio, error);
}
static int cleaner_kthread(void *arg)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index ef48947..a31448f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5284,9 +5284,17 @@ static void btrfs_end_bio(struct bio *bio, int err)
}
}
- if (bio == bbio->orig_bio)
+ if (bio == bbio->orig_bio) {
is_orig_bio = 1;
+ /*
+ * eventually we will call the bi_endio for the original bio,
+ * make sure that we've properly bumped bi_remaining to reflect
+ * our chain of endios here
+ */
+ atomic_inc(&bio->bi_remaining);
+ }
+
if (atomic_dec_and_test(&bbio->stripes_pending)) {
if (!is_orig_bio) {
bio_put(bio);
--
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