linux-kernel - [PATCH v4 33/49] madvise: Use split_vma() instead of __split

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Date:   Fri, 20 Jan 2023 11:26:34 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        maple-tree@...ts.infradead.org
Cc:     "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        "Liam R . Howlett" <Liam.Howlett@...cle.com>
Subject: [PATCH v4 33/49] madvise: Use split_vma() instead of __split_vma()

From: "Liam R. Howlett" <Liam.Howlett@...cle.com>

The split_vma() wrapper is specifically for this use case, so use it.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 mm/madvise.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/mm/madvise.c b/mm/madvise.c
index 02b317726c9a..7db6622f8293 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -161,17 +161,13 @@ static int madvise_update_vma(struct vm_area_struct *vma,
 	*prev = vma;
 
 	if (start != vma->vm_start) {
-		if (unlikely(mm->map_count >= sysctl_max_map_count))
-			return -ENOMEM;
-		error = __split_vma(&vmi, vma, start, 1);
+		error = split_vma(&vmi, vma, start, 1);
 		if (error)
 			return error;
 	}
 
 	if (end != vma->vm_end) {
-		if (unlikely(mm->map_count >= sysctl_max_map_count))
-			return -ENOMEM;
-		error = __split_vma(&vmi, vma, end, 0);
+		error = split_vma(&vmi, vma, end, 0);
 		if (error)
 			return error;
 	}
-- 
2.35.1