linux-kernel - [PATCH v2 37/70] drivers/misc/cxl: Use maple tree iterators for cxl_prefault

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Date:   Tue, 12 Jan 2021 11:12:07 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...gle.com>, Song Liu <songliubraving@...com>,
        Davidlohr Bueso <dave@...olabs.net>,
        "Paul E . McKenney" <paulmck@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Jerome Glisse <jglisse@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Rik van Riel <riel@...riel.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH v2 37/70] drivers/misc/cxl: Use maple tree iterators for cxl_prefault_vma()

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 drivers/misc/cxl/fault.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c
index 01153b74334a1..47951b84f2cda 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);
-- 
2.28.0