+ mm-mincore-replace-__get_free_page-with-kmalloc.patch added to mm-new branch

The patch titled
     Subject: mm: mincore: replace __get_free_page() with kmalloc()
has been added to the -mm mm-new branch.  Its filename is
     mm-mincore-replace-__get_free_page-with-kmalloc.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mincore-replace-__get_free_page-with-kmalloc.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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------------------------------------------------------
From: Kefeng Wang <[email protected]>
Subject: mm: mincore: replace __get_free_page() with kmalloc()
Date: Fri, 17 Jul 2026 17:13:44 +0800

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/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Reviewed-by: Pedro Falcato <[email protected]>
Acked-by: David Hildenbrand (Arm) <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Liam R. Howlett <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 mm/mincore.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/mm/mincore.c~mm-mincore-replace-__get_free_page-with-kmalloc
+++ a/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>
@@ -329,7 +330,7 @@ SYSCALL_DEFINE3(mincore, unsigned long,
 	if (!access_ok(vec, pages))
 		return -EFAULT;
 
-	tmp = (void *) __get_free_page(GFP_USER);
+	tmp = kmalloc(PAGE_SIZE, GFP_KERNEL);
 	if (!tmp)
 		return -EAGAIN;
 
@@ -354,6 +355,6 @@ SYSCALL_DEFINE3(mincore, unsigned long,
 		start += retval << PAGE_SHIFT;
 		retval = 0;
 	}
-	free_page((unsigned long) tmp);
+	kfree(tmp);
 	return retval;
 }
_

Patches currently in -mm which might be from [email protected] are

mm-migrate_device-fix-pte_pfn-pte_dirty-called-on-non-present-pte.patch
mm-remove-pagetranscompound.patch
mm-mincore-use-walk_page_range_vma-in-do_mincore.patch
mm-mprotect-use-walk_page_range_vma-in-mprotect_fixup.patch
mm-mlock-use-walk_page_range_vma-in-mlock_vma_pages_range.patch
mm-migrate_device-use-walk_page_range_vma-in-migrate_vma_collect.patch
mm-introduce-pud_is_huge-helper.patch
mm-mincore-remove-special-handling-for-vm_pfnmap.patch
mm-mincore-replace-__get_free_page-with-kmalloc.patch
mm-mincore-remove-xa_is_value-in-mincore_swap.patch
mm-mincore-improve-mincore_hugetlb.patch
mm-mincore-refactor-mincore_page.patch