From ee416bcdba9975065de571e09de1f7ebfde2156a Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Tue, 4 Jul 2017 17:25:16 +0100
Subject: [PATCH] VFS: Make get_filesystem() return the affected filesystem
Make get_filesystem() return a pointer to the filesystem on which it just
got a ref.
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/filesystems.c | 3 ++-
include/linux/fs.h | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/fs/filesystems.c b/fs/filesystems.c
index cac75547d35cc..591e52d23ed4d 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -33,9 +33,10 @@ static struct file_system_type *file_systems;
static DEFINE_RWLOCK(file_systems_lock);
/* WARNING: This can be used only if we _already_ own a reference */
-void get_filesystem(struct file_system_type *fs)
+struct file_system_type *get_filesystem(struct file_system_type *fs)
{
__module_get(fs->owner);
+ return fs;
}
void put_filesystem(struct file_system_type *fs)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 803e5a9b26542..bc0c054894b9e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2956,7 +2956,7 @@ extern int generic_block_fiemap(struct inode *inode,
struct fiemap_extent_info *fieinfo, u64 start,
u64 len, get_block_t *get_block);
-extern void get_filesystem(struct file_system_type *fs);
+extern struct file_system_type *get_filesystem(struct file_system_type *fs);
extern void put_filesystem(struct file_system_type *fs);
extern struct file_system_type *get_fs_type(const char *name);
extern struct super_block *get_super(struct block_device *);
--
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