From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Thu, 14 Apr 2022 06:07:17 +0000 (-0700)
Subject: mm/mmap: change do_brk_munmap() to use do_mas_align_munmap()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2be6636d0af1b9e94eb94514a393b2e8815c97d0;p=users%2Fjedix%2Flinux-maple.git

mm/mmap: change do_brk_munmap() to use do_mas_align_munmap()

do_brk_munmap() has already aligned the address and has a maple tree state
to be used.  Use the new do_mas_align_munmap() to avoid unnecessary
alignment and error checks.

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/mm/mmap.c b/mm/mmap.c
index 9eddf4625401..7f1e4d31a147 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3041,14 +3041,15 @@ static int do_brk_munmap(struct ma_state *mas, struct vm_area_struct *vma,
 	struct mm_struct *mm = vma->vm_mm;
 	struct vm_area_struct unmap;
 	unsigned long unmap_pages;
-	int ret = 1;
+	int ret;
 
 	arch_unmap(mm, newbrk, oldbrk);
 
 	if (likely((vma->vm_end < oldbrk) ||
 		   ((vma->vm_start == newbrk) && (vma->vm_end == oldbrk)))) {
 		/* remove entire mapping(s) */
-		ret = do_mas_munmap(mas, mm, newbrk, oldbrk-newbrk, uf, true);
+		ret = do_mas_align_munmap(mas, vma, mm, newbrk, oldbrk, uf,
+					  true);
 		goto munmap_full_vma;
 	}