On 02/01/2013 04:20 PM, Andrew Morton wrote:
On Thu, 17 Jan 2013 14:52:53 -0800
Cody P Schafer <cody@xxxxxxxxxxxxxxxxxx> wrote:
Instead of directly utilizing a combination of config options to determine this,
add a macro to specifically address it.
...
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -625,6 +625,10 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
#define NODE_NOT_IN_PAGE_FLAGS
#endif
+#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
+#define SECTION_IN_PAGE_FLAGS
+#endif
We could do this in Kconfig itself, in the definition of a new
CONFIG_SECTION_IN_PAGE_FLAGS.
Yep, I only put it here because it "sounds" the similar to
NODE_NOT_IN_PAGE_FLAGS, but (of course) NODE_NOT_IN_PAGE_FLAGS isn't
defined based on pure dependencies, while this is.
I'm not sure that I like that sort of thing a lot though - it's rather a
pain to have to switch from .[ch] over to Kconfig to find the
definitions of things. I should get off my tail and teach my ctags
scripts to handle this.
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