From: Peter Xu <peterx@redhat.com>
Date: Fri, 27 Jun 2025 16:07:39 +0000 (-0400)
Subject: mm: deduplicate mm_get_unmapped_area()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd3d25f055e86a7f5958381beba99d67927d4e65;p=thirdparty%2Fkernel%2Flinux.git

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.

Link: https://lkml.kernel.org/r/20250627160739.2124768-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Pedro Falcato <pfalcato@suse.de>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/mmap.c b/mm/mmap.c
index 8f92cf10b6563..74072369e8fde 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);