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-rw-r--r--arch/um/drivers/cow_user.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c
index 61951b721268..afdf1ea0f557 100644
--- a/arch/um/drivers/cow_user.c
+++ b/arch/um/drivers/cow_user.c
@@ -75,7 +75,7 @@ struct cow_header_v3 {
__u32 alignment;
__u32 cow_format;
char backing_file[PATH_LEN_V3];
-};
+} __attribute__((packed));
/* COW format definitions - for now, we have only the usual COW bitmap */
#define COW_BITMAP 0