This is a note to let you know that I've just added the patch titled
shmem: fix compilation warnings on unused functions
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
shmem-fix-compilation-warnings-on-unused-functions.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f1f5929cd9715c1cdfe07a890f12ac7d2c5304ec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=A9r=C3=A9my=20Lefaure?= <jeremy.lefaure@xxxxxxxxxxxx>
Date: Mon, 12 Dec 2016 16:43:23 -0800
Subject: shmem: fix compilation warnings on unused functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Jérémy Lefaure <jeremy.lefaure@xxxxxxxxxxxx>
commit f1f5929cd9715c1cdfe07a890f12ac7d2c5304ec upstream.
Compiling shmem.c with SHMEM and TRANSAPRENT_HUGE_PAGECACHE enabled
raises warnings on two unused functions when CONFIG_TMPFS and
CONFIG_SYSFS are both disabled:
mm/shmem.c:390:20: warning: `shmem_format_huge' defined but not used [-Wunused-function]
static const char *shmem_format_huge(int huge)
^~~~~~~~~~~~~~~~~
mm/shmem.c:373:12: warning: `shmem_parse_huge' defined but not used [-Wunused-function]
static int shmem_parse_huge(const char *str)
^~~~~~~~~~~~~~~~
A conditional compilation on tmpfs or sysfs removes the warnings.
Link: http://lkml.kernel.org/r/20161118055749.11313-1-jeremy.lefaure@xxxxxxxxxxxx
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@xxxxxxxxxxxx>
Acked-by: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
mm/shmem.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -370,6 +370,7 @@ static bool shmem_confirm_swap(struct ad
int shmem_huge __read_mostly;
+#if defined(CONFIG_SYSFS) || defined(CONFIG_TMPFS)
static int shmem_parse_huge(const char *str)
{
if (!strcmp(str, "never"))
@@ -407,6 +408,7 @@ static const char *shmem_format_huge(int
return "bad_val";
}
}
+#endif
static unsigned long shmem_unused_huge_shrink(struct shmem_sb_info *sbinfo,
struct shrink_control *sc, unsigned long nr_to_split)
Patches currently in stable-queue which might be from jeremy.lefaure@xxxxxxxxxxxx are
queue-4.9/x86-vm86-fix-unused-variable-warning-if-thp-is-disabled.patch
queue-4.9/shmem-fix-compilation-warnings-on-unused-functions.patch
queue-4.9/usb-musb-fix-compilation-warning-on-unused-function.patch