linux-kernel - [PATCH v2 29/70] arch/parsic: Remove mmap linked list from kernel/cache

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Message-Id: <20210112161240.2024684-30-Liam.Howlett@Oracle.com>
Date:   Tue, 12 Jan 2021 11:11:59 -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 29/70] arch/parsic: Remove mmap linked list from kernel/cache

Start using the maple tree

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 arch/parisc/kernel/cache.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 86a1a63563fd5..288a25e1b1c29 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -520,8 +520,9 @@ static inline unsigned long mm_total_size(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
 	unsigned long usize = 0;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
-	for (vma = mm->mmap; vma; vma = vma->vm_next)
+	mas_for_each(&mas, vma, ULONG_MAX)
 		usize += vma->vm_end - vma->vm_start;
 	return usize;
 }
@@ -548,6 +549,7 @@ void flush_cache_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
 	pgd_t *pgd;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
 	/* Flushing the whole cache on each cpu takes forever on
 	   rp3440, etc.  So, avoid it if the mm isn't too big.  */
@@ -560,7 +562,7 @@ void flush_cache_mm(struct mm_struct *mm)
 	}
 
 	if (mm->context == mfsp(3)) {
-		for (vma = mm->mmap; vma; vma = vma->vm_next) {
+		mas_for_each(&mas, vma, ULONG_MAX) {
 			flush_user_dcache_range_asm(vma->vm_start, vma->vm_end);
 			if (vma->vm_flags & VM_EXEC)
 				flush_user_icache_range_asm(vma->vm_start, vma->vm_end);
@@ -570,7 +572,7 @@ void flush_cache_mm(struct mm_struct *mm)
 	}
 
 	pgd = mm->pgd;
-	for (vma = mm->mmap; vma; vma = vma->vm_next) {
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		unsigned long addr;
 
 		for (addr = vma->vm_start; addr < vma->vm_end;
-- 
2.28.0