The patch titled
Subject: fs/proc/task_mmu: hide unused pagemap_scan_backout_range() function
has been added to the -mm mm-unstable branch. Its filename is
fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-3.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: fs/proc/task_mmu: hide unused pagemap_scan_backout_range() function
Date: Wed, 27 Sep 2023 08:02:23 +0200
This function has two callers, each of which are hidden behind an #ifdef:
fs/proc/task_mmu.c:2022:13: error: 'pagemap_scan_backout_range' defined but not used [-Werror=unused-function]
Add another conditional to check for both options to avoid the
unused-function warning.
Link: https://lkml.kernel.org/r/20230927060257.2975412-1-arnd@xxxxxxxxxx
Fixes: 93538f467c0f6 ("fs/proc/task_mmu: implement IOCTL to get and optionally clear info about PTEs")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/task_mmu.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/proc/task_mmu.c~fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-3
+++ a/fs/proc/task_mmu.c
@@ -1941,6 +1941,7 @@ static void make_uffd_wp_huge_pte(struct
make_pte_marker(PTE_MARKER_UFFD_WP), psize);
}
+#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLB_PAGE)
static void pagemap_scan_backout_range(struct pagemap_scan_private *p,
unsigned long addr, unsigned long end)
{
@@ -1966,6 +1967,7 @@ static bool pagemap_scan_is_interesting_
return true;
}
+#endif
static bool pagemap_scan_is_interesting_vma(unsigned long categories,
const struct pagemap_scan_private *p)
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
fs-proc-task_mmu-implement-ioctl-to-get-and-optionally-clear-info-about-ptes-fix-3.patch
