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libfs: Move shmem_exchange to simple_rename_exchange

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Move shmem_exchange and make it available to other callers.

Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/bpf/20211028094724.59043-2-lmb@cloudflare.com
This commit is contained in:
Lorenz Bauer
2021-10-28 10:47:21 +01:00
committed by Daniel Borkmann
parent 92f62485b3
commit 6429e46304
3 changed files with 27 additions and 23 deletions
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2
include/linux/fs.h
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@@ -3383,6 +3383,8 @@ extern int simple_open(struct inode *inode, struct file *file);
extern int simple_link(struct dentry *, struct inode *, struct dentry *);
extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);
extern int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry);
extern int simple_rename(struct user_namespace *, struct inode *,
struct dentry *, struct inode *, struct dentry *,
unsigned int);