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Message-ID: <20241008064849.1814829-1-haisuwang@tencent.com>
Date: Tue, 8 Oct 2024 14:48:46 +0800
From: iamhswang@...il.com
To: linux-btrfs@...r.kernel.org
Cc: clm@...com,
josef@...icpanda.com,
dsterba@...e.com,
wqu@...e.com,
boris@....io,
linux-kernel@...r.kernel.org,
iamhswang@...il.com,
Haisu Wang <haisuwang@...cent.com>
Subject: [PATCH] btrfs: fix the length of reserved qgroup to free
From: Haisu Wang <haisuwang@...cent.com>
The dealloc flag may be cleared and the extent won't reach the disk
in cow_file_range when errors path. The reserved qgroup space is
freed in commit 30479f31d44d ("btrfs: fix qgroup reserve leaks in
cow_file_range"). However, the length of untouched region to free
need to be adjusted with the region size.
Fixes: 30479f31d44d ("btrfs: fix qgroup reserve leaks in cow_file_range")
Signed-off-by: Haisu Wang <haisuwang@...cent.com>
---
fs/btrfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b0ad46b734c3..5eefa2318fa8 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1592,7 +1592,7 @@ static noinline int cow_file_range(struct btrfs_inode *inode,
clear_bits |= EXTENT_CLEAR_DATA_RESV;
extent_clear_unlock_delalloc(inode, start, end, locked_folio,
&cached, clear_bits, page_ops);
- btrfs_qgroup_free_data(inode, NULL, start, cur_alloc_size, NULL);
+ btrfs_qgroup_free_data(inode, NULL, start, end - start + 1, NULL);
}
return ret;
}
--
2.39.3
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