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authorDarrick J. Wong <darrick.wong@oracle.com>2016-09-19 03:13:02 +0300
committerDave Chinner <david@fromorbit.com>2016-09-19 03:13:02 +0300
commite43c460dcd265431df7a5e481450ad9c0596c10c (patch)
tree2b68863bf6d156f977c9e48e5bb2b56883139922 /include/linux/iomap.h
parent5f4e5752a8a3a72c79514def2ad9fc7cd410ce2e (diff)
downloadlinux-e43c460dcd265431df7a5e481450ad9c0596c10c.tar.xz
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>
Diffstat (limited to 'include/linux/iomap.h')
-rw-r--r--include/linux/iomap.h1
1 files changed, 1 insertions, 0 deletions
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: