Add a f_vnode field to struct file.

Several of the subtypes have an associated vnode which is used for
stuff like the f*() functions.

By giving the vnode a speparate field, a number of checks for the specific
subtype can be replaced simply with a check for f_vnode != NULL, and
we can later free f_data up to subtype specific use.

At this point in time, f_data still points to the vnode, so any code I
might have overlooked will still work.

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/sys/file.h b/sys/sys/file.h
index 71170bd1274e..0b71ab6e93ab 100644
--- a/sys/sys/file.h
+++ b/sys/sys/file.h
@@ -116,6 +116,7 @@ struct file {
 	struct fileops *f_ops;	/* File operations */
 	struct	ucred *f_cred;	/* credentials associated with descriptor */
 	int	f_count;	/* (f) reference count */
+	struct vnode *f_vnode;	/* NULL or applicable vnode */
 
 	/* DFLAG_SEEKABLE specific fields */
 	off_t	f_offset;