From b2d2ce0b02aa1dcc25e8ca5ad2e42610ad5637e8 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Sat, 19 Nov 2022 14:58:44 +0900
Subject: [PATCH] exfat: treewide: use get_random_u32() when possible
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The prandom_u32() function has been a deprecated inline wrapper around
get_random_u32() for several releases now, and compiles down to the
exact same code. Replace the deprecated wrapper with a direct call to
the real function. The same also applies to get_random_int(), which is
just a wrapper around get_random_u32(). This was done as a basic find
and replace.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz> # for ext4
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> # for sch_cake
Acked-by: Chuck Lever <chuck.lever@oracle.com> # for nfsd
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # for thunderbolt
Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs
Acked-by: Helge Deller <deller@gmx.de> # for parisc
Acked-by: Heiko Carstens <hca@linux.ibm.com> # for s390
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
---
 inode.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/inode.c b/inode.c
index 93dc313a3a1c..d0bfa26c6584 100644
--- a/inode.c
+++ b/inode.c
@@ -615,7 +615,11 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
 #else
 	inode->i_version++;
 #endif
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
+	inode->i_generation = get_random_u32();
+#else
 	inode->i_generation = prandom_u32();
+#endif
 
 	if (info->attr & ATTR_SUBDIR) { /* directory */
 		inode->i_generation &= ~1;