From 7625cb56733bfd470e9fae69a1b8b78aa8b1d3eb Mon Sep 17 00:00:00 2001
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Date: Fri, 17 Jul 2026 17:13:44 +0800
Subject: [PATCH] mm: mincore: replace __get_free_page() with kmalloc()

Remove ugly casts by using the more natural kmalloc/kfree allocation, also
replace GFP_USER(pointless here) with GFP_KERNEL.

Link: https://lore.kernel.org/20260717091347.1144789-4-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Pedro Falcato <pfalcato@suse.de>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/mincore.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/mincore.c b/mm/mincore.c
index d9d4381d7ed4..a2119c50c50c 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -12,6 +12,7 @@
 #include <linux/gfp.h>
 #include <linux/pagewalk.h>
 #include <linux/mman.h>
+#include <linux/slab.h>
 #include <linux/syscalls.h>
 #include <linux/swap.h>
 #include <linux/leafops.h>
@@ -328,7 +329,7 @@ SYSCALL_DEFINE3(mincore, unsigned long, start, size_t, len,
 	if (!access_ok(vec, pages))
 		return -EFAULT;
 
-	tmp = (void *) __get_free_page(GFP_USER);
+	tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!tmp)
 		return -EAGAIN;
 
@@ -353,6 +354,6 @@ SYSCALL_DEFINE3(mincore, unsigned long, start, size_t, len,
 		start += retval << PAGE_SHIFT;
 		retval = 0;
 	}
-	free_page((unsigned long) tmp);
+	kfree(tmp);
 	return retval;
 }