+ fat-fix-too-many-log-in-fat_chain_add.patch added to mm-nonmm-unstable branch

+ fat-fix-too-many-log-in-fat_chain_add.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: fat: fix too many log in fat_chain_add()
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     fat-fix-too-many-log-in-fat_chain_add.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/fat-fix-too-many-log-in-fat_chain_add.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Subject: fat: fix too many log in fat_chain_add()
Date: Thu, 24 Jul 2025 16:42:10 +0900

This log was excessive for a serial console.  So use the ratelimited
version instead.

Link: https://lkml.kernel.org/r/87qzy611d9.fsf@mail.parknet.co.jp
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reported-by: syzbot+fa7ef54f66c189c04b73@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=fa7ef54f66c189c04b73
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/fat/misc.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/fs/fat/misc.c~fat-fix-too-many-log-in-fat_chain_add
+++ a/fs/fat/misc.c
@@ -158,9 +158,9 @@ int fat_chain_add(struct inode *inode, i
 			mark_inode_dirty(inode);
 	}
 	if (new_fclus != (inode->i_blocks >> (sbi->cluster_bits - 9))) {
-		fat_fs_error(sb, "clusters badly computed (%d != %llu)",
-			     new_fclus,
-			     (llu)(inode->i_blocks >> (sbi->cluster_bits - 9)));
+		fat_fs_error_ratelimit(
+			sb, "clusters badly computed (%d != %llu)", new_fclus,
+			(llu)(inode->i_blocks >> (sbi->cluster_bits - 9)));
 		fat_cache_inval_inode(inode);
 	}
 	inode->i_blocks += nr_cluster << (sbi->cluster_bits - 9);
_

Patches currently in -mm which might be from hirofumi@mail.parknet.co.jp are

fat-fix-too-many-log-in-fat_chain_add.patch