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 <[email protected]> Signed-off-by: Al Viro <[email protected]>
iegor · Jan 23, 2016 · e62e560 · e62e560
1 parent 3ed47db
commit e62e560
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/fs/read_write.c b/fs/read_write.c
@@ -1656,6 +1656,9 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)
 		mnt_drop_write_file(dst_file);
 next_loop:
 		fdput(dst_fd);
+
+		if (fatal_signal_pending(current))
+			goto out;
 	}
 
 out: