linux-kernel - Re: [PATCH] md/bitmap: use i

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Date:   Fri, 20 Jan 2017 23:00:39 +0800
From:   Coly Li <colyli@...e.de>
To:     Geliang Tang <geliangtang@...il.com>, Shaohua Li <shli@...nel.org>
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] md/bitmap: use i_blocksize()

On 2017/1/20 下午10:29, Geliang Tang wrote:
> Since i_blocksize() helper has been defined in fs.h, use it instead
> of open-coding.
> 
> Signed-off-by: Geliang Tang <geliangtang@...il.com>
> ---
>  drivers/md/bitmap.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
> index 9fb2cca..30b1b89 100644
> --- a/drivers/md/bitmap.c
> +++ b/drivers/md/bitmap.c
> @@ -367,7 +367,7 @@ static int read_page(struct file *file, unsigned long index,
>  	pr_debug("read bitmap file (%dB @ %llu)\n", (int)PAGE_SIZE,
>  		 (unsigned long long)index << PAGE_SHIFT);
>  
> -	bh = alloc_page_buffers(page, 1<<inode->i_blkbits, 0);
> +	bh = alloc_page_buffers(page, i_blocksize(inode), 0);
>  	if (!bh) {
>  		ret = -ENOMEM;
>  		goto out;
> @@ -385,10 +385,10 @@ static int read_page(struct file *file, unsigned long index,
>  				goto out;
>  			}
>  			bh->b_bdev = inode->i_sb->s_bdev;
> -			if (count < (1<<inode->i_blkbits))
> +			if (count < i_blocksize(inode))
>  				count = 0;
>  			else
> -				count -= (1<<inode->i_blkbits);
> +				count -= i_blocksize(inode);
>  
>  			bh->b_end_io = end_bitmap_write;
>  			bh->b_private = bitmap;
> 

Acked-by: Coly Li <colyli@...e.de>

I agree with this. Thanks.

Coly