[PATCH] Mark some key VFS functions as __always_inline

Mark a few VFS functions as mandatory inline (based on Al Viro's request);
these must be inline due to stack usage issues during a recursive loop that
happens during the recursive symlink resolution (symlink to a symlink to a
symlink ..)

This patch at this point does not change behavior and is for documentation
purposes only (but this changes later in the series)
Signed-off-by: NArjan van de Ven <arjan@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

fs/namei.c

@@ -486,7 +486,7 @@ static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, s
 static int __emul_lookup_dentry(const char *, struct nameidata *);
 
 /* SMP-safe */
-static inline int
+static __always_inline int
 walk_init_root(const char *name, struct nameidata *nd)
 {
 	read_lock(&current->fs->lock);
@@ -504,7 +504,7 @@ walk_init_root(const char *name, struct nameidata *nd)
 	return 1;
 }
 
-static inline int __vfs_follow_link(struct nameidata *nd, const char *link)
+static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *link)
 {
 	int res = 0;
 	char *name;
@@ -544,7 +544,7 @@ struct path {
 	struct dentry *dentry;
 };
 
-static inline int __do_follow_link(struct path *path, struct nameidata *nd)
+static __always_inline int __do_follow_link(struct path *path, struct nameidata *nd)
 {
 	int error;
 	void *cookie;
@@ -690,7 +690,7 @@ int follow_down(struct vfsmount **mnt, struct dentry **dentry)
 	return 0;
 }
 
-static inline void follow_dotdot(struct nameidata *nd)
+static __always_inline void follow_dotdot(struct nameidata *nd)
 {
 	while(1) {
 		struct vfsmount *parent;