From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Sat, 23 Jan 2016 00:58:28 +0000 (-0800)
Subject: vfs: abort dedupe loop if fatal signals are pending
X-Git-Tag: v4.5~241^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e62e560fc8b65ef5debc9041a792d18a8f98b2ca;p=platform%2Fkernel%2Flinux-amlogic.git

vfs: abort dedupe loop if fatal signals are pending

If the program running dedupe receives a fatal signal during the
dedupe loop, we should bail out to avoid tying up the system.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/read_write.c b/fs/read_write.c
index fa05985..324ec27 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1656,6 +1656,9 @@ next_file:
 		mnt_drop_write_file(dst_file);
 next_loop:
 		fdput(dst_fd);
+
+		if (fatal_signal_pending(current))
+			goto out;
 	}
 
 out: