linux-kernel - [PATCH 1/5] mm: Deduplicate mm_get_unmapped

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Message-ID: <20250613134111.469884-2-peterx@redhat.com>
Date: Fri, 13 Jun 2025 09:41:07 -0400
From: Peter Xu <peterx@...hat.com>
To: linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	kvm@...r.kernel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	Zi Yan <ziy@...dia.com>,
	Jason Gunthorpe <jgg@...dia.com>,
	Alex Mastro <amastro@...com>,
	David Hildenbrand <david@...hat.com>,
	Nico Pache <npache@...hat.com>,
	peterx@...hat.com
Subject: [PATCH 1/5] mm: Deduplicate mm_get_unmapped_area()

Essentially it sets vm_flags==0 for mm_get_unmapped_area_vmflags().  Use
the helper instead to dedup the lines.

Signed-off-by: Peter Xu <peterx@...hat.com>
---
 mm/mmap.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index 09c563c95112..422f5b9d9660 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -871,9 +871,8 @@ mm_get_unmapped_area(struct mm_struct *mm, struct file *file,
 		     unsigned long addr, unsigned long len,
 		     unsigned long pgoff, unsigned long flags)
 {
-	if (test_bit(MMF_TOPDOWN, &mm->flags))
-		return arch_get_unmapped_area_topdown(file, addr, len, pgoff, flags, 0);
-	return arch_get_unmapped_area(file, addr, len, pgoff, flags, 0);
+	return mm_get_unmapped_area_vmflags(mm, file, addr, len,
+					    pgoff, flags, 0);
 }
 EXPORT_SYMBOL(mm_get_unmapped_area);
 
-- 
2.49.0