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From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>
Cc: <ziy@nvidia.com>, <william.kucharski@oracle.com>,
	<willy@infradead.org>, <yang.shi@linux.alibaba.com>,
	<aneesh.kumar@linux.ibm.com>, <rcampbell@nvidia.com>,
	<songliubraving@fb.com>, <kirill.shutemov@linux.intel.com>,
	<riel@surriel.com>, <hannes@cmpxchg.org>, <minchan@kernel.org>,
	<hughd@google.com>, <adobriyan@gmail.com>,
	<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
	<linux-fsdevel@vger.kernel.org>, <linmiaohe@huawei.com>
Subject: [PATCH v3 1/5] mm/huge_memory.c: remove dedicated macro HPAGE_CACHE_INDEX_MASK
Date: Tue, 11 May 2021 21:48:53 +0800	[thread overview]
Message-ID: <20210511134857.1581273-2-linmiaohe@huawei.com> (raw)
In-Reply-To: <20210511134857.1581273-1-linmiaohe@huawei.com>

Rewrite the pgoff checking logic to remove macro HPAGE_CACHE_INDEX_MASK
which is only used here to simplify the code.

Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 include/linux/huge_mm.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 9626fda5efce..0a526f211fec 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -152,15 +152,13 @@ static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
 
 bool transparent_hugepage_enabled(struct vm_area_struct *vma);
 
-#define HPAGE_CACHE_INDEX_MASK (HPAGE_PMD_NR - 1)
-
 static inline bool transhuge_vma_suitable(struct vm_area_struct *vma,
 		unsigned long haddr)
 {
 	/* Don't have to check pgoff for anonymous vma */
 	if (!vma_is_anonymous(vma)) {
-		if (((vma->vm_start >> PAGE_SHIFT) & HPAGE_CACHE_INDEX_MASK) !=
-			(vma->vm_pgoff & HPAGE_CACHE_INDEX_MASK))
+		if (!IS_ALIGNED((vma->vm_start >> PAGE_SHIFT) - vma->vm_pgoff,
+				HPAGE_PMD_NR))
 			return false;
 	}
 
-- 
2.23.0


  reply	other threads:[~2021-05-11 13:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-11 13:48 [PATCH v3 0/5] Cleanup and fixup for huge_memory Miaohe Lin
2021-05-11 13:48 ` Miaohe Lin [this message]
2021-05-11 13:48 ` [PATCH v3 2/5] mm/huge_memory.c: use page->deferred_list Miaohe Lin
2021-05-11 23:03   ` Matthew Wilcox
2021-05-12  2:02     ` Miaohe Lin
2021-05-11 13:48 ` [PATCH v3 3/5] mm/huge_memory.c: add missing read-only THP checking in transparent_hugepage_enabled() Miaohe Lin
2021-05-13 21:30   ` Yang Shi
2021-05-14  1:53     ` Miaohe Lin
2021-05-11 13:48 ` [PATCH v3 4/5] mm/huge_memory.c: remove unnecessary tlb_remove_page_size() for huge zero pmd Miaohe Lin
2021-05-11 13:48 ` [PATCH v3 5/5] mm/huge_memory.c: don't discard hugepage if other processes are mapping it Miaohe Lin

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