diff options
| author | Josh Triplett <josh@joshtriplett.org> | 2013-04-29 15:07:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-29 15:54:33 -0700 |
| commit | 146732ce104ddfed3d4d82722c0b336074016b92 (patch) | |
| tree | 07185bc6ff143cc669cc9e0a197a3adf0c13004a | |
| parent | 6d2488f64a240191f0733c1f32d73607916b01b7 (diff) | |
fs: don't compile in drop_caches.c when CONFIG_SYSCTL=n
drop_caches.c provides code only invokable via sysctl, so don't compile it
in when CONFIG_SYSCTL=n.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/Makefile | 3 | ||||
| -rw-r--r-- | include/linux/mm.h | 4 | ||||
| -rw-r--r-- | kernel/sysctl.c | 1 |
3 files changed, 6 insertions, 2 deletions
diff --git a/fs/Makefile b/fs/Makefile index 9d53192236fc..3b2c76759ec9 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -10,7 +10,7 @@ obj-y := open.o read_write.o file_table.o super.o \ ioctl.o readdir.o select.o fifo.o dcache.o inode.o \ attr.o bad_inode.o file.o filesystems.o namespace.o \ seq_file.o xattr.o libfs.o fs-writeback.o \ - pnode.o drop_caches.o splice.o sync.o utimes.o \ + pnode.o splice.o sync.o utimes.o \ stack.o fs_struct.o statfs.o ifeq ($(CONFIG_BLOCK),y) @@ -49,6 +49,7 @@ obj-$(CONFIG_FS_POSIX_ACL) += posix_acl.o xattr_acl.o obj-$(CONFIG_NFS_COMMON) += nfs_common/ obj-$(CONFIG_GENERIC_ACL) += generic_acl.o obj-$(CONFIG_COREDUMP) += coredump.o +obj-$(CONFIG_SYSCTL) += drop_caches.o obj-$(CONFIG_FHANDLE) += fhandle.o diff --git a/include/linux/mm.h b/include/linux/mm.h index 43b70d5f8201..98a44376e4f3 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1731,8 +1731,12 @@ int in_gate_area_no_mm(unsigned long addr); #define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_mm(addr);}) #endif /* __HAVE_ARCH_GATE_AREA */ +#ifdef CONFIG_SYSCTL +extern int sysctl_drop_caches; int drop_caches_sysctl_handler(struct ctl_table *, int, void __user *, size_t *, loff_t *); +#endif + unsigned long shrink_slab(struct shrink_control *shrink, unsigned long nr_pages_scanned, unsigned long lru_pages); diff --git a/kernel/sysctl.c b/kernel/sysctl.c index afc1dc60f3f8..3dadde52253c 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -106,7 +106,6 @@ extern unsigned int core_pipe_limit; #endif extern int pid_max; extern int pid_max_min, pid_max_max; -extern int sysctl_drop_caches; extern int percpu_pagelist_fraction; extern int compat_log; extern int latencytop_enabled; |