From e69f18f06b97ed29645d020500222bfcec2b42b2 Mon Sep 17 00:00:00 2001
From: "Martin K. Petersen" <martin.petersen@oracle.com>
Date: Tue, 8 Apr 2014 22:59:31 -0400
Subject: [PATCH] block: Ensure we only enable integrity metadata for reads and
writes
We'd occasionally attempt to generate protection information for flushes
and other requests with a zero payload. Make sure we only attempt to
enable integrity for reads and writes.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
fs/bio-integrity.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index b355b98dbf1b4..1c2ce0c877113 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -182,6 +182,9 @@ static int bdev_integrity_enabled(struct block_device *bdev, int rw)
*/
int bio_integrity_enabled(struct bio *bio)
{
+ if (!bio_is_rw(bio))
+ return 0;
+
/* Already protected? */
if (bio_integrity(bio))
return 0;
--
2.39.5