commit 7a8721f84fcb3b2946a92380b6fc311e017ff02c
author Dmitry Kadashev <dkadashev@gmail.com> Thu Jul 08 13:34:46 2021 +0700
committer Jens Axboe <axboe@kernel.dk> Mon Aug 23 13:48:33 2021 -0600
tree 37f17666ed6ea3b678f7777f1d5e5abe3998ef8e
parent e34a02dc40c95d126bb6486dcf802bbb8d1624a0

io_uring: add support for IORING_OP_SYMLINKAT

IORING_OP_SYMLINKAT behaves like symlinkat(2) and takes the same flags
and arguments.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/io-uring/20210514145259.wtl4xcsp52woi6ab@wittgenstein/
Signed-off-by: Dmitry Kadashev <dkadashev@gmail.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20210708063447.3556403-11-dkadashev@gmail.com
[axboe: add splice_fd_in check]
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/namei.c

diff --git a/fs/namei.c b/fs/namei.c
index e2425c0..803fc95 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4223,8 +4223,7 @@ int vfs_symlink(struct user_namespace *mnt_userns, struct inode *dir,
 }
 EXPORT_SYMBOL(vfs_symlink);
 
-static int do_symlinkat(struct filename *from, int newdfd,
-		  struct filename *to)
+int do_symlinkat(struct filename *from, int newdfd, struct filename *to)
 {
 	int error;
 	struct dentry *dentry;