The patch titled
Subject: shmem: fix W=1 build warnings with CONFIG_SHMEM=n
has been added to the -mm mm-unstable branch. Its filename is
shmem-fix-w=1-build-warnings-with-config_shmem=n.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/shmem-fix-w=1-build-warnings-with-config_shmem=n.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: shmem: fix W=1 build warnings with CONFIG_SHMEM=n
Date: Mon, 6 Feb 2023 19:08:50 +0000
With W=1 and CONFIG_SHMEM=n, shmem.c functions have no prototypes so the
compiler emits warnings.
Link: https://lkml.kernel.org/r/20230206190850.4054983-1-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Mark Hemment <markhemm@xxxxxxxxxxxxxx>
Cc: Charan Teja Kalla <quic_charante@xxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Pavankumar Kondeti <quic_pkondeti@xxxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/shmem.c~shmem-fix-w=1-build-warnings-with-config_shmem=n
+++ a/mm/shmem.c
@@ -33,6 +33,7 @@
#include <linux/random.h>
#include <linux/sched/signal.h>
#include <linux/export.h>
+#include <linux/shmem_fs.h>
#include <linux/swap.h>
#include <linux/uio.h>
#include <linux/hugetlb.h>
@@ -58,7 +59,6 @@ static struct vfsmount *shm_mnt;
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/backing-dev.h>
-#include <linux/shmem_fs.h>
#include <linux/writeback.h>
#include <linux/pagevec.h>
#include <linux/percpu_counter.h>
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-add-memcpy_from_file_folio.patch
shmem-fix-w=1-build-warnings-with-config_shmem=n.patch
