[PATCH] vfs: abort dedupe loop if fatal signals are pending

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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@xxxxxxxxxx>
---
 fs/read_write.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/read_write.c b/fs/read_write.c
index aaaad52..aab334e 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1617,6 +1617,9 @@ next_file:
 		mnt_drop_write_file(dst_file);
 next_loop:
 		fdput(dst_fd);
+
+		if (fatal_signal_pending(current))
+			goto out;
 	}
 
 out:
--
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