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From:   Josef Bacik <josef@toxicpanda.com>
To:     rostedt@goodmis.org, mingo@redhat.com, davem@davemloft.net,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        ast@kernel.org, kernel-team@fb.com, daniel@iogearbox.net,
        linux-btrfs@vger.kernel.org
Cc:     Josef Bacik <jbacik@fb.com>
Subject: [PATCH v7 5/5] btrfs: allow us to inject errors at io_ctl_init
Date:   Wed, 22 Nov 2017 16:23:34 -0500
Message-Id: <1511385814-20863-6-git-send-email-josef@toxicpanda.com>
In-Reply-To: <1511385814-20863-1-git-send-email-josef@toxicpanda.com>
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From: Josef Bacik <jbacik@fb.com>

This was instrumental in reproducing a space cache bug.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
---
 fs/btrfs/free-space-cache.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index cdc9f4015ec3..daa98dc1f844 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -22,6 +22,7 @@
 #include <linux/slab.h>
 #include <linux/math64.h>
 #include <linux/ratelimit.h>
+#include <linux/bpf.h>
 #include "ctree.h"
 #include "free-space-cache.h"
 #include "transaction.h"
@@ -332,6 +333,7 @@ static int io_ctl_init(struct btrfs_io_ctl *io_ctl, struct inode *inode,
 
 	return 0;
 }
+BPF_ALLOW_ERROR_INJECTION(io_ctl_init);
 
 static void io_ctl_free(struct btrfs_io_ctl *io_ctl)
 {
-- 
2.7.5


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