[PATCH 2/3] fput: move ->f_next_put into a union with ->f_version

[Oleg Nesterov <oleg@redhat.com>]

file->f_next_put can share the memory with file->f_version (I hope).

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
 include/linux/fs.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3941b86..58faad6 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -860,8 +860,10 @@ struct file {
 	const struct cred	*f_cred;
 	struct file_ra_state	f_ra;
 
-	u64			f_version;
-	struct file		*f_next_put;
+	union {
+		u64		f_version;
+		struct file	*f_next_put;
+	};
 #ifdef CONFIG_SECURITY
 	void			*f_security;
 #endif
-- 
2.4.3