linux-kernel - Re: erofs: use wrapper i_blocksize() in erofs_file_read

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Date:   Thu, 9 Mar 2023 15:36:58 +0800
From:   Jingbo Xu <jefflexu@...ux.alibaba.com>
To:     Yangtao Li <frank.li@...o.com>, zbestahu@...il.com
Cc:     chao@...nel.org, huyue2@...lpad.com, linux-erofs@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, xiang@...nel.org,
        zhangwen@...lpad.com
Subject: Re: erofs: use wrapper i_blocksize() in erofs_file_read_iter()



On 3/9/23 3:15 PM, Yangtao Li wrote:
>> @@ -380,7 +380,7 @@ static ssize_t erofs_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
>> 		if (bdev)
>> 			blksize_mask = bdev_logical_block_size(bdev) - 1;
>> 		else
>> -			blksize_mask = (1 << inode->i_blkbits) - 1;
>> +			blksize_mask = i_blocksize(inode) - 1;
> 
> Since the mask is to be obtained here, is it more appropriate to use GENMASK(inode->i_blkbits - 1, 0)?


FYI it seems that GENMASK macro is widely used in driver and arch code
base, while it's rarely used in fs, except for f2fs.

-- 
Thanks,
Jingbo