From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Mon, 4 Jan 2021 19:31:50 +0000 (-0500)
Subject: drivers/misc/cxl: Use maple tree iterators for cxl_prefault_vma()
X-Git-Tag: howlett/maple_spf/20210118~33
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b9cf11dd026468476292fb7991fedfdf712c6d94;p=users%2Fjedix%2Flinux-maple.git

drivers/misc/cxl: Use maple tree iterators for cxl_prefault_vma()

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

diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 01153b74334a..47951b84f2cd 100644
--- a/drivers/misc/cxl/fault.c
+++ b/drivers/misc/cxl/fault.c
@@ -313,6 +313,7 @@ static void cxl_prefault_vma(struct cxl_context *ctx)
 	struct vm_area_struct *vma;
 	int rc;
 	struct mm_struct *mm;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
 	mm = get_mem_context(ctx);
 	if (mm == NULL) {
@@ -322,7 +323,7 @@ static void cxl_prefault_vma(struct cxl_context *ctx)
 	}
 
 	mmap_read_lock(mm);
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		for (ea = vma->vm_start; ea < vma->vm_end;
 				ea = next_segment(ea, slb.vsid)) {
 			rc = copro_calculate_slb(mm, ea, &slb);