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authorJérémy Lefaure <jeremy.lefaure@lse.epita.fr>2016-12-12 16:43:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 18:55:08 -0800
commitf1f5929cd9715c1cdfe07a890f12ac7d2c5304ec (patch)
treef83038159784d226d627b30820dd8632093f63db
parentbace9248188f64d7490ebe59fc0733db8b6f0e57 (diff)
shmem: fix compilation warnings on unused functions
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@lse.epita.fr Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/shmem.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index ba0d7644ee20..ec7aa562343e 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -370,6 +370,7 @@ static bool shmem_confirm_swap(struct address_space *mapping,
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 huge)
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)