Without CONFIG_MMU, we get a build warning:
fs/proc/vmcore.c:228:12: error: 'vmcoredd_mmap_dumps' defined but not used
[-Werror=unused-function]
static int vmcoredd_mmap_dumps(struct vm_area_struct *vma, unsigned long dst,
The function is only referenced from an #ifdef'ed caller, so
this uses the same #ifdef around it.
Fixes: 7efe48df8a3d ("vmcore: append device dumps to vmcore as elf notes")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
fs/proc/vmcore.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index cfb6674331fd..0651646dd04d 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -225,6 +225,7 @@ static int vmcoredd_copy_dumps(void *dst, u64 start, size_t
size, int userbuf)
return ret;
}
+#ifdef CONFIG_MMU
static int vmcoredd_mmap_dumps(struct vm_area_struct *vma, unsigned long dst,
u64 start, size_t size)
{
@@ -259,6 +260,7 @@ static int vmcoredd_mmap_dumps(struct vm_area_struct *vma,
unsigned long dst,
mutex_unlock(&vmcoredd_mutex);
return ret;
}
+#endif /* CONFIG_MMU */
#endif /* CONFIG_PROC_VMCORE_DEVICE_DUMP */
/* Read from the ELF header and then the crash dump. On error, negative value
is
--
2.9.0
