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-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: