From 85cfbd9db2c6e0d213e5c28b04c8ca1820000533 Mon Sep 17 00:00:00 2001
From: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Date: Thu, 13 Oct 2016 09:23:39 +0800
Subject: [PATCH] btrfs: make file clone aware of fatal signals

commit 69ae5e4459e43e56f03d0987e865fbac2b05af2a upstream.

Indeed this just make the behavior similar to xfs when process has
fatal signals pending, and it'll make fstests/generic/298 happy.

Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 fs/btrfs/ioctl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index a7e18dbadf74..317b99acdf4b 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3825,6 +3825,11 @@ process_slot:
 		}
 		btrfs_release_path(path);
 		key.offset = next_key_min_offset;
+
+		if (fatal_signal_pending(current)) {
+			ret = -EINTR;
+			goto out;
+		}
 	}
 	ret = 0;
 
-- 
2.34.1