linux-kernel - [PATCH v2 18/70] mm/mmap: Drop munmap_vma

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Date:   Tue, 12 Jan 2021 11:11:48 -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 18/70] mm/mmap: Drop munmap_vma_range()

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 mm/mmap.c | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index d3dfea031c0d5..1cef158c31909 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -483,29 +483,6 @@ static inline struct vm_area_struct *vma_next(struct mm_struct *mm,
 	return vma->vm_next;
 }
 
-/*
- * munmap_vma_range() - munmap VMAs that overlap a range.
- * @mm: The mm struct
- * @start: The start of the range.
- * @len: The length of the range.
- * @pprev: pointer to the pointer that will be set to previous vm_area_struct
- *
- * Find all the vm_area_struct that overlap from @start to
- * @end and munmap them.  Set @pprev to the previous vm_area_struct.
- *
- * Returns: -ENOMEM on munmap failure or 0 on success.
- */
-static inline int
-munmap_vma_range(struct mm_struct *mm, unsigned long start, unsigned long len,
-		 struct vm_area_struct **pprev, struct list_head *uf)
-{
-	// Needs optimization.
-	while (range_has_overlap(mm, start, start + len, pprev)) {
-		if (do_munmap(mm, start, len, uf))
-			return -ENOMEM;
-	}
-	return 0;
-}
 static unsigned long count_vma_pages_range(struct mm_struct *mm,
 		unsigned long addr, unsigned long end)
 {
-- 
2.28.0