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mm: replace PAGE_MIGRATION with IS_ENABLED(CONFIG_MIGRATION)

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Since commit 2a11c8ea20 ("kconfig: Introduce IS_ENABLED(),
IS_BUILTIN() and IS_MODULE()") there is a generic grep-friendly method
for checking config options in C expressions.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Konstantin Khlebnikov
2012-03-21 16:33:59 -07:00
committed by Linus Torvalds
parent 092b50bacd
commit ce1744f4ed
3 changed files with 5 additions and 6 deletions
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7
mm/rmap.c
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@@ -1282,7 +1282,7 @@ int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
}
dec_mm_counter(mm, MM_ANONPAGES);
inc_mm_counter(mm, MM_SWAPENTS);
} else if (PAGE_MIGRATION) {
} else if (IS_ENABLED(CONFIG_MIGRATION)) {
/*
* Store the pfn of the page in a special migration
* pte. do_swap_page() will wait until the migration
@@ -1293,7 +1293,8 @@ int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
}
set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
BUG_ON(pte_file(*pte));
} else if (PAGE_MIGRATION && (TTU_ACTION(flags) == TTU_MIGRATION)) {
} else if (IS_ENABLED(CONFIG_MIGRATION) &&
(TTU_ACTION(flags) == TTU_MIGRATION)) {
/* Establish migration entry for a file page */
swp_entry_t entry;
entry = make_migration_entry(page, pte_write(pteval));
@@ -1499,7 +1500,7 @@ static int try_to_unmap_anon(struct page *page, enum ttu_flags flags)
* locking requirements of exec(), migration skips
* temporary VMAs until after exec() completes.
*/
if (PAGE_MIGRATION && (flags & TTU_MIGRATION) &&
if (IS_ENABLED(CONFIG_MIGRATION) && (flags & TTU_MIGRATION) &&
is_vma_temporary_stack(vma))
continue;