From: Zhihao Cheng <chengzhihao1@huawei.com>
Date: Fri, 21 Nov 2025 09:06:50 +0000 (+0800)
Subject: ext4: support large block size in __ext4_block_zero_page_range()
X-Git-Url: https://gentwo.org/gitweb/?a=commitdiff_plain;h=c00a6292d0616c304cb712d823370f1a82f899b2;p=linux%2F.git

ext4: support large block size in __ext4_block_zero_page_range()

Use the EXT4_PG_TO_LBLK() macro to convert folio indexes to blocks to avoid
negative left shifts after supporting blocksize greater than PAGE_SIZE.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Message-ID: <20251121090654.631996-21-libaokun@huaweicloud.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8cf33a58d1a6..3b6f66463add 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4076,7 +4076,7 @@ static int __ext4_block_zero_page_range(handle_t *handle,
 
 	blocksize = inode->i_sb->s_blocksize;
 
-	iblock = folio->index << (PAGE_SHIFT - inode->i_sb->s_blocksize_bits);
+	iblock = EXT4_PG_TO_LBLK(inode, folio->index);
 
 	bh = folio_buffers(folio);
 	if (!bh)