linux-kernel - [PATCH v8 2/5] btrfs: make open

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Date:   Wed,  6 Dec 2017 11:12:14 -0500
From:   Josef Bacik <josef@...icpanda.com>
To:     rostedt@...dmis.org, mingo@...hat.com, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ast@...nel.org, kernel-team@...com, daniel@...earbox.net,
        linux-btrfs@...r.kernel.org
Cc:     Josef Bacik <jbacik@...com>
Subject: [PATCH v8 2/5] btrfs: make open_ctree error injectable

From: Josef Bacik <jbacik@...com>

This allows us to do error injection with BPF for open_ctree.

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

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index dfdab849037b..69d17a640b94 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -30,6 +30,7 @@
 #include <linux/ratelimit.h>
 #include <linux/uuid.h>
 #include <linux/semaphore.h>
+#include <linux/bpf.h>
 #include <asm/unaligned.h>
 #include "ctree.h"
 #include "disk-io.h"
@@ -3283,6 +3284,7 @@ int open_ctree(struct super_block *sb,
 		goto fail_block_groups;
 	goto retry_root_backup;
 }
+BPF_ALLOW_ERROR_INJECTION(open_ctree);
 
 static void btrfs_end_buffer_write_sync(struct buffer_head *bh, int uptodate)
 {
-- 
2.7.5