mm: remove PageActive

Patch series "Simplify the page flags a little".

In the course of our folio conversions, we have made many page flags only
used on folios, so we can now remove the page-based accessors.  This
should cut down compile time a little, and prevent new users from cropping
up.

There is more that could be done in this area, but it would produce merge
conflicts, so I'll sit on those patches until next merge window.  We now
have line of sight to removing PG_private_2 and PG_private.

This patch (of 10):

This flag is now only used on folios, so we can remove all the page
accessors.

[akpm@linux-foundation.org: fix arch/powerpc/mm/pgtable-frag.c]
Link: https://lkml.kernel.org/r/20240821193445.2294269-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20240821193445.2294269-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/arch/powerpc/mm/pgtable-frag.c b/arch/powerpc/mm/pgtable-frag.c
index 8c31802f97e82e7b94290b889650ee3f0981f99f..e89f64a0f24ae75f9746e9234310c6c0daae23cf 100644 (file)
--- a/arch/powerpc/mm/pgtable-frag.c
+++ b/arch/powerpc/mm/pgtable-frag.c
@@ -136,10 +136,10 @@ void pte_fragment_free(unsigned long *table, int kernel)
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable)
 {
-       struct page *page;
+       struct folio *folio;
 
-       page = virt_to_page(pgtable);
-       SetPageActive(page);
+       folio = virt_to_folio(pgtable);
+       folio_set_active(folio);
        pte_fragment_free((unsigned long *)pgtable, 0);
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 7a1b2948b075c00cf1bbd0054eec2b199a6d9d92..34347bee1217acca6f6cd4f65568a3b342a3ec77 100644 (file)
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -510,8 +510,9 @@ PAGEFLAG(Dirty, dirty, PF_HEAD) TESTSCFLAG(Dirty, dirty, PF_HEAD)
        __CLEARPAGEFLAG(Dirty, dirty, PF_HEAD)
 PAGEFLAG(LRU, lru, PF_HEAD) __CLEARPAGEFLAG(LRU, lru, PF_HEAD)
        TESTCLEARFLAG(LRU, lru, PF_HEAD)
-PAGEFLAG(Active, active, PF_HEAD) __CLEARPAGEFLAG(Active, active, PF_HEAD)
-       TESTCLEARFLAG(Active, active, PF_HEAD)
+FOLIO_FLAG(active, FOLIO_HEAD_PAGE)
+       __FOLIO_CLEAR_FLAG(active, FOLIO_HEAD_PAGE)
+       FOLIO_TEST_CLEAR_FLAG(active, FOLIO_HEAD_PAGE)
 PAGEFLAG(Workingset, workingset, PF_HEAD)
        TESTCLEARFLAG(Workingset, workingset, PF_HEAD)
 PAGEFLAG(Checked, checked, PF_NO_COMPOUND)        /* Used by some filesystems */