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Commit ba341d55 authored by Tejun Heo's avatar Tejun Heo Committed by Greg Kroah-Hartman
Browse files

kernfs: add CONFIG_KERNFS 



As sysfs was kernfs's only user, kernfs has been piggybacking on
CONFIG_SYSFS; however, kernfs is scheduled to grow a new user very
soon.  Introduce a separate config option CONFIG_KERNFS which is to be
selected by kernfs users.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fa4cd451

fs/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -96,6 +96,7 @@ endif # BLOCK 
menu "Pseudo filesystems"



source "fs/proc/Kconfig"

source "fs/kernfs/Kconfig"

source "fs/sysfs/Kconfig"



config TMPFS

fs/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -52,7 +52,8 @@ obj-$(CONFIG_FHANDLE) += fhandle.o 
obj-y				+= quota/



obj-$(CONFIG_PROC_FS)		+= proc/

obj-$(CONFIG_SYSFS)		+= sysfs/ kernfs/

obj-$(CONFIG_KERNFS)		+= kernfs/

obj-$(CONFIG_SYSFS)		+= sysfs/

obj-$(CONFIG_CONFIGFS_FS)	+= configfs/

obj-y				+= devpts/

fs/kernfs/Kconfig

0 → 100644
+7 −0
Original line number Diff line number Diff line 
#

# KERNFS should be selected by its users

#



config KERNFS

	bool

	default n

fs/sysfs/Kconfig

+1 −0
Original line number Diff line number Diff line 
config SYSFS

	bool "sysfs file system support" if EXPERT

	default y

	select KERNFS

	help

	The sysfs filesystem is a virtual filesystem that the kernel uses to

	export internal kernel objects, their attributes, and their

include/linux/kernfs.h

+3 −3
Original line number Diff line number Diff line
@@ -201,7 +201,7 @@ struct kernfs_ops { 
#endif

};



#ifdef CONFIG_SYSFS

#ifdef CONFIG_KERNFS



static inline enum kernfs_node_type kernfs_type(struct kernfs_node *kn)

{
@@ -284,7 +284,7 @@ void kernfs_kill_sb(struct super_block *sb); 


void kernfs_init(void);



#else	/* CONFIG_SYSFS */

#else	/* CONFIG_KERNFS */



static inline enum kernfs_node_type kernfs_type(struct kernfs_node *kn)

{ return 0; }	/* whatever */
@@ -379,7 +379,7 @@ static inline void kernfs_kill_sb(struct super_block *sb) { } 


static inline void kernfs_init(void) { }



#endif	/* CONFIG_SYSFS */

#endif	/* CONFIG_KERNFS */



static inline struct kernfs_node *

kernfs_find_and_get(struct kernfs_node *kn, const char *name)