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-rw-r--r--sys/sys/mdioctl.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/mdioctl.h b/sys/sys/mdioctl.h
index 194ca54..6782e1a 100644
--- a/sys/sys/mdioctl.h
+++ b/sys/sys/mdioctl.h
@@ -75,5 +75,6 @@ struct md_ioctl {
#define MD_RESERVE 0x02 /* Pre-reserve swap */
#define MD_AUTOUNIT 0x04 /* Assign next free unit */
#define MD_READONLY 0x08 /* Readonly mode */
+#define MD_COMPRESS 0x10 /* Compression mode */
#endif /* _SYS_MDIOCTL_H_*/
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