From e43c460dcd265431df7a5e481450ad9c0596c10c Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Mon, 19 Sep 2016 10:13:02 +1000
Subject: iomap: add a flag to report shared extents

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
 include/linux/iomap.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'include/linux/iomap.h')

diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 3a56212a0a8d..c74226a738a3 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -22,6 +22,7 @@ struct vm_fault;
  * Flags for iomap mappings:
  */
 #define IOMAP_F_MERGED	0x01	/* contains multiple blocks/extents */
+#define IOMAP_F_SHARED	0x02	/* block shared with another file */
 
 /*
  * Magic value for blkno:
-- 
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