diff options
| author | Matthew Wilcox (Oracle) | 2024-03-26 17:10:23 +0000 |
|---|---|---|
| committer | Andrew Morton | 2024-04-25 20:56:13 -0700 |
| commit | f4b6680973d5f94845ca34dcc7126a769d48c0d4 (patch) | |
| tree | aa6b7a63bd48b12b11282ae61929542a6681368b /arch | |
| parent | f002882ca369aba3eece5006f3346ccf75ede7c5 (diff) | |
sh: remove use of PG_arch_1 on individual pages
Patch series "Various page->flags cleanups".
The first two patches are bug fixes, although I'm not sure that either
architecture will have noticed. There aren't a lot of uses of page->flags
left! The big build-up here is to reworking stable_page_flags(), which
will definitely be a user-visible change. I think a welcome one, given
the special case we had to spread the Slab flag into all tail pages.
This patch (of 10):
Since switching to the new page table range API, we do not set the
PG_arch_1 (aka dcache clean) flag on tail pages, only on the folio. Test
it on the folio. Also use page_mapped() instead of page_mapcount() as it
is more efficient.
[akpm@linux-foundation.org: fix folio_flags call]
Link: https://lkml.kernel.org/r/20240326171045.410737-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20240326171045.410737-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/mm/cache-sh4.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index 862046f26981..9a1e581cd192 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -241,13 +241,14 @@ static void sh4_flush_cache_page(void *args) if ((vma->vm_mm == current->active_mm)) vaddr = NULL; else { + struct folio *folio = page_folio(page); /* * Use kmap_coherent or kmap_atomic to do flushes for * another ASID than the current one. */ map_coherent = (current_cpu_data.dcache.n_aliases && - test_bit(PG_dcache_clean, &page->flags) && - page_mapcount(page)); + test_bit(PG_dcache_clean, folio_flags(folio, 0)) && + page_mapped(page)); if (map_coherent) vaddr = kmap_coherent(page, address); else |