[PATCH v3 1/9] shmem: unexport shmem_add_seals()/shmem_get_seals()

From: Marc-Andrà Lureau
Date: Tue Nov 07 2017 - 07:32:36 EST


The functions are called through shmem_fcntl() only. And no danger in
removing the EXPORTs as the routines only work with shmem file
structs.

Signed-off-by: Marc-Andrà Lureau <marcandre.lureau@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
---
include/linux/shmem_fs.h | 2 --
mm/shmem.c | 6 ++----
2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index ed91ce57c428..1f5bf07cb8be 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -110,8 +110,6 @@ extern void shmem_uncharge(struct inode *inode, long pages);

#ifdef CONFIG_TMPFS

-extern int shmem_add_seals(struct file *file, unsigned int seals);
-extern int shmem_get_seals(struct file *file);
extern long shmem_fcntl(struct file *file, unsigned int cmd, unsigned long arg);

#else
diff --git a/mm/shmem.c b/mm/shmem.c
index 07a1d22807be..37260c5e12fa 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2722,7 +2722,7 @@ static int shmem_wait_for_pins(struct address_space *mapping)
F_SEAL_GROW | \
F_SEAL_WRITE)

-int shmem_add_seals(struct file *file, unsigned int seals)
+static int shmem_add_seals(struct file *file, unsigned int seals)
{
struct inode *inode = file_inode(file);
struct shmem_inode_info *info = SHMEM_I(inode);
@@ -2791,16 +2791,14 @@ int shmem_add_seals(struct file *file, unsigned int seals)
inode_unlock(inode);
return error;
}
-EXPORT_SYMBOL_GPL(shmem_add_seals);

-int shmem_get_seals(struct file *file)
+static int shmem_get_seals(struct file *file)
{
if (file->f_op != &shmem_file_operations)
return -EINVAL;

return SHMEM_I(file_inode(file))->seals;
}
-EXPORT_SYMBOL_GPL(shmem_get_seals);

long shmem_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
{
--
2.15.0.125.g8f49766d64