smaps: only define clear_refs for CONFIG_MMU
/proc/pid/clear_refs is only defined in the CONFIG_MMU case, so make sure we
don't have any references to clear_refs_smap() in generic procfs code.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 3c41149..a5fa1fd 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -708,6 +708,7 @@
.write = oom_adjust_write,
};
+#ifdef CONFIG_MMU
static ssize_t clear_refs_write(struct file *file, const char __user *buf,
size_t count, loff_t *ppos)
{
@@ -741,6 +742,7 @@
static struct file_operations proc_clear_refs_operations = {
.write = clear_refs_write,
};
+#endif
#ifdef CONFIG_AUDITSYSCALL
#define TMPBUFLEN 21