fs/proc: fix compile warning about variable 'vmcore_mmap_ops'

When build with !CONFIG_MMU, the variable 'vmcore_mmap_ops'
is defined but not used:

>> fs/proc/vmcore.c:458:42: warning: unused variable 'vmcore_mmap_ops'
     458 | static const struct vm_operations_struct vmcore_mmap_ops = {

Fix this by only defining it when CONFIG_MMU is enabled.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 9cb218131de1 ("vmcore: introduce remap_oldmem_pfn_range()")
Signed-off-by: Qi Xi <[email protected]>
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/lkml/[email protected]/
Cc: Baoquan He <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Michael Holzheu <[email protected]>
Cc: Vivek Goyal <[email protected]>
Cc: Wang ShaoBo <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions