From: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Date: Thu, 13 Oct 2016 01:23:39 +0000 (+0800)
Subject: btrfs: make file clone aware of fatal signals
X-Git-Tag: v4.9-rc4~13^2~3
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=69ae5e4459e43e56f03d0987e865fbac2b05af2a;p=linux.git

btrfs: make file clone aware of fatal signals

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>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index af69129d7e0e..71634570943c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3814,6 +3814,11 @@ static int btrfs_clone(struct inode *src, struct inode *inode,
 		}
 		btrfs_release_path(path);
 		key.offset = next_key_min_offset;
+
+		if (fatal_signal_pending(current)) {
+			ret = -EINTR;
+			goto out;
+		}
 	}
 	ret = 0;