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mm: mincore: replace __get_free_page() with kmalloc()

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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>
This commit is contained in:
Kefeng Wang 2026-07-17 17:13:44 +08:00 committed by Andrew Morton
parent 006943a9b4
commit 7625cb5673
1 changed files with 3 additions and 2 deletions
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5
mm/mincore.c
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@ -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;
}