From: Chi Zhiling <chizhiling@163.com>
To: exfat@lists.linux.dev, linux-kernel@vger.kernel.org
Cc: Namjae Jeon <linkinjeon@kernel.org>,
Sungjong Seo <sj1557.seo@samsung.com>,
Yuezhang Mo <yuezhang.mo@sony.com>,
Chi Zhiling <chizhiling@kylinos.cn>
Subject: [PATCH 0/2] exfat: fix cluster allocation accounting and locking
Date: Sat, 5 Sep 2026 13:49:49 +0800 [thread overview]
Message-ID: <20260905054951.674766-1-chizhiling@163.com> (raw)
From: Chi Zhiling <chizhiling@kylinos.cn>
Patch 1 fixes sbi->used_clusters accounting when cluster allocation
fails partway through. This can cause the counter to underflow.
The issue is caught by generic/476.
Patch 2 takes bitmap_lock before checking and allocating clusters.
Chi Zhiling (2):
exfat: fix used_clusters accounting during cluster allocation
exfat: take bitmap_lock at the start of exfat_alloc_cluster()
fs/exfat/fatent.c | 19 +++++++++++--------
1 file changed, 11 insertions(+), 8 deletions(-)
--
2.53.0
next reply other threads:[~2026-09-05 5:51 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-05 5:49 Chi Zhiling [this message]
2026-09-05 5:49 ` [PATCH 1/2] exfat: fix used_clusters accounting during cluster allocation Chi Zhiling
2026-09-05 5:49 ` [PATCH 2/2] exfat: take bitmap_lock at the start of exfat_alloc_cluster() Chi Zhiling
2026-09-07 3:21 ` David Timber
2026-09-07 8:04 ` Chi Zhiling
2026-09-08 0:53 ` David Timber
2026-09-05 9:33 ` [PATCH 0/2] exfat: fix cluster allocation accounting and locking Namjae Jeon
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