linux-kernel - [PATCH v3 1/9] shmem: unexport shmem_add_seals()/shmem_get

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Date:   Tue,  7 Nov 2017 13:27:52 +0100
From:   Marc-André Lureau <marcandre.lureau@...hat.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     aarcange@...hat.com, hughd@...gle.com, nyc@...omorphy.com,
        mike.kravetz@...cle.com,
        Marc-André Lureau <marcandre.lureau@...hat.com>
Subject: [PATCH v3 1/9] shmem: unexport shmem_add_seals()/shmem_get_seals()

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-André Lureau <marcandre.lureau@...hat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
---
 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