[PATCH] thp: fix unused shmem_parse_huge() function warning

* [PATCH] thp: fix unused shmem_parse_huge() function warning
@ 2019-07-12  9:11 Arnd Bergmann
  0 siblings, 0 replies; only message in thread
From: Arnd Bergmann @ 2019-07-12  9:11 UTC (permalink / raw)
  To: Hugh Dickins
  Cc: Arnd Bergmann, David Howells, Al Viro, Andrew Morton,
	Matthew Wilcox, Vlastimil Babka, Andrea Arcangeli,
	Vineeth Remanan Pillai, linux-mm, linux-kernel

When CONFIG_SYSFS is disabled but CONFIG_TMPFS is enabled, we get a warning
about shmem_parse_huge() never being called:

mm/shmem.c:417:12: error: unused function 'shmem_parse_huge' [-Werror,-Wunused-function]
static int shmem_parse_huge(const char *str)

Change the #ifdef so we no longer build this function in that configuration.

Fixes: 144df3b288c4 ("vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 mm/shmem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index ba40fac908c5..32aa9d46b87c 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -413,7 +413,7 @@ static bool shmem_confirm_swap(struct address_space *mapping,
 
 static int shmem_huge __read_mostly;
 
-#if defined(CONFIG_SYSFS) || defined(CONFIG_TMPFS)
+#if defined(CONFIG_SYSFS)
 static int shmem_parse_huge(const char *str)
 {
 	if (!strcmp(str, "never"))
@@ -430,7 +430,9 @@ static int shmem_parse_huge(const char *str)
 		return SHMEM_HUGE_FORCE;
 	return -EINVAL;
 }
+#endif
 
+#if defined(CONFIG_SYSFS) || defined(CONFIG_TMPFS)
 static const char *shmem_format_huge(int huge)
 {
 	switch (huge) {
-- 
2.20.0


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