Add infrastructure for the VFS layer to mark files seekable.

We use a FMODE_LSEEK flag to match the existing read/write
bits. This allows us to check for seekability on a VFS level
for lseek/pread/pwrite, and cleans things up.

Update some sites that used the numeric constants to use 
the symbolic values instead.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 22dd6acdf9f1f2..44dbcaea3ebda2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -74,6 +74,7 @@ extern int leases_enable, dir_notify_enable, lease_break_time;
 
 #define FMODE_READ 1
 #define FMODE_WRITE 2
+#define FMODE_LSEEK 4	/* Internal kernel extension */
 
 #define RW_MASK		1
 #define RWA_MASK	2