xnu-201.tar.gz

[apple/xnu.git] / bsd / sys / mount.h

diff --git a/bsd/sys/mount.h b/bsd/sys/mount.h
index 4a939095c620dee7ce0fa913c7904a4422c2e9ba..61fdd6bb735dfe489bd47d684ed6f0f85e58da9c 100644 (file)
--- a/bsd/sys/mount.h
+++ b/bsd/sys/mount.h
@@ -134,6 +134,11 @@ struct mount {
        int             mnt_maxsymlinklen;      /* max size of short symlink */
        struct statfs   mnt_stat;               /* cache of filesystem stats */
        qaddr_t         mnt_data;               /* private data */
+       /* Cached values of the IO constraints for the device */
+       u_int32_t       mnt_maxreadcnt; /* Max. byte count for read */
+       u_int32_t       mnt_maxwritecnt;        /* Max. byte count for write */
+       u_int16_t       mnt_segreadcnt; /* Max. segment count for read */
+       u_int16_t       mnt_segwritecnt;        /* Max. segment count for write */
 };
 
 /*