From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Wed, 7 Apr 2021 19:56:08 +0000 (-0400)
Subject: bpf: Remove VMA linked list
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c6c43241a48e5d9a3f94ec37d7c8a14c42f562ba;p=users%2Fjedix%2Flinux-maple.git

bpf: Remove VMA linked list

Use vma_next() and remove reference to the start of the linked list

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

diff --git a/kernel/bpf/task_iter.c b/kernel/bpf/task_iter.c
index b68cb5d6d6ebc..c1c71adc7c1a4 100644
--- a/kernel/bpf/task_iter.c
+++ b/kernel/bpf/task_iter.c
@@ -400,10 +400,10 @@ again:
 
 	switch (op) {
 	case task_vma_iter_first_vma:
-		curr_vma = curr_task->mm->mmap;
+		curr_vma = find_vma(curr_task->mm, 0);
 		break;
 	case task_vma_iter_next_vma:
-		curr_vma = curr_vma->vm_next;
+		curr_vma = vma_next(curr_vma->vm_mm, curr_vma);
 		break;
 	case task_vma_iter_find_vma:
 		/* We dropped mmap_lock so it is necessary to use find_vma
@@ -417,7 +417,7 @@ again:
 		if (curr_vma &&
 		    curr_vma->vm_start == info->prev_vm_start &&
 		    curr_vma->vm_end == info->prev_vm_end)
-			curr_vma = curr_vma->vm_next;
+			curr_vma = vma_next(curr_vma->vm_mm, curr_vma);
 		break;
 	}
 	if (!curr_vma) {