From: Zhiguo Niu <zhiguo.niu@unisoc.com>
To: <jaegeuk@kernel.org>, <chao@kernel.org>
Cc: ke.wang@unisoc.com, linux-kernel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net, hongyu.jin@unisoc.com,
zhiguo.niu@unisoc.com
Subject: [f2fs-dev] [PATCH] f2fs: fix to adjust appropirate defragment pg_end
Date: Fri, 22 Mar 2024 14:03:10 +0800 [thread overview]
Message-ID: <1711087390-23645-1-git-send-email-zhiguo.niu@unisoc.com> (raw)
A length that exceeds the real size of the inode may be
specified from user, although these out-of-range areas
are not mapped, but they still need to be check in
while loop, which is unnecessary.
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
---
fs/f2fs/file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 128e53d..0e7eac6 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2609,7 +2609,9 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
int err;
pg_start = range->start >> PAGE_SHIFT;
- pg_end = (range->start + range->len) >> PAGE_SHIFT;
+ pg_end = min_t(pgoff_t,
+ (range->start + range->len) >> PAGE_SHIFT,
+ DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE));
f2fs_balance_fs(sbi, true);
--
1.9.1
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next reply other threads:[~2024-03-22 6:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-22 6:03 Zhiguo Niu [this message]
2024-03-23 3:02 ` [f2fs-dev] [PATCH] f2fs: fix to adjust appropirate defragment pg_end Chao Yu
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