From: Liam R. Howlett <Liam.Howlett@oracle.com>
Date: Thu, 2 Sep 2021 17:43:56 +0000 (-0400)
Subject: i915: Use the maple tree iterator for vdso
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=bd6371c00e10333c865ba54db8b1975fcc9111fb;p=users%2Fjedix%2Flinux-maple.git

i915: Use the maple tree iterator for vdso

Remove the use of the vma linked list in favour of mas_for_each()

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

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index 8ea0fa665e53..a67d62159e5b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -423,11 +423,12 @@ static int
 probe_range(struct mm_struct *mm, unsigned long addr, unsigned long len)
 {
 	const unsigned long end = addr + len;
+	MA_STATE(mas, &mm->mm_mt, addr, addr);
 	struct vm_area_struct *vma;
 	int ret = -EFAULT;
 
 	mmap_read_lock(mm);
-	for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		/* Check for holes, note that we also update the addr below */
 		if (vma->vm_start > addr)
 			break;