From: Naohiro Aota <naohiro.aota@wdc.com>
Date: Mon, 11 Aug 2025 16:32:58 +0000 (+0900)
Subject: btrfs: fix buffer index in wait_eb_writebacks()
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=dc61d97b0ba064fb21b01fbfa7436873948277bd;p=linux-block.git

btrfs: fix buffer index in wait_eb_writebacks()

The commit f2cb97ee964a ("btrfs: index buffer_tree using node size")
changed the index of buffer_tree from "start >> sectorsize_bits" to "start
>> nodesize_bits". However, the change is not applied for
wait_eb_writebacks() and caused IO failures by writing in a full zone. Use
the index properly.

Fixes: f2cb97ee964a ("btrfs: index buffer_tree using node size")
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index e0ee3aeabd2c..ea662036f441 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -2242,7 +2242,7 @@ static void wait_eb_writebacks(struct btrfs_block_group *block_group)
 	struct btrfs_fs_info *fs_info = block_group->fs_info;
 	const u64 end = block_group->start + block_group->length;
 	struct extent_buffer *eb;
-	unsigned long index, start = (block_group->start >> fs_info->sectorsize_bits);
+	unsigned long index, start = (block_group->start >> fs_info->nodesize_bits);
 
 	rcu_read_lock();
 	xa_for_each_start(&fs_info->buffer_tree, index, eb, start) {