linux-kernel - Re: [PATCH 01/14] fs/buffer: remove __breadahead

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Message-ID: <20220831103911.ubrkxc3yf46bdme3@quack3>
Date:   Wed, 31 Aug 2022 12:39:11 +0200
From:   Jan Kara <jack@...e.cz>
To:     Zhang Yi <yi.zhang@...wei.com>
Cc:     linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, cluster-devel@...hat.com,
        ntfs3@...ts.linux.dev, ocfs2-devel@....oracle.com,
        reiserfs-devel@...r.kernel.org, jack@...e.cz, tytso@....edu,
        akpm@...ux-foundation.org, axboe@...nel.dk,
        viro@...iv.linux.org.uk, rpeterso@...hat.com, agruenba@...hat.com,
        almaz.alexandrovich@...agon-software.com, mark@...heh.com,
        dushistov@...l.ru, hch@...radead.org, chengzhihao1@...wei.com,
        yukuai3@...wei.com
Subject: Re: [PATCH 01/14] fs/buffer: remove __breadahead_gfp()

On Wed 31-08-22 15:20:58, Zhang Yi wrote:
> No one use __breadahead_gfp() and sb_breadahead_unmovable() any more,
> remove them.
> 
> Signed-off-by: Zhang Yi <yi.zhang@...wei.com>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/buffer.c                 | 11 -----------
>  include/linux/buffer_head.h |  8 --------
>  2 files changed, 19 deletions(-)
> 
> diff --git a/fs/buffer.c b/fs/buffer.c
> index 55e762a58eb6..a0b70b3239f3 100644
> --- a/fs/buffer.c
> +++ b/fs/buffer.c
> @@ -1348,17 +1348,6 @@ void __breadahead(struct block_device *bdev, sector_t block, unsigned size)
>  }
>  EXPORT_SYMBOL(__breadahead);
>  
> -void __breadahead_gfp(struct block_device *bdev, sector_t block, unsigned size,
> -		      gfp_t gfp)
> -{
> -	struct buffer_head *bh = __getblk_gfp(bdev, block, size, gfp);
> -	if (likely(bh)) {
> -		ll_rw_block(REQ_OP_READ | REQ_RAHEAD, 1, &bh);
> -		brelse(bh);
> -	}
> -}
> -EXPORT_SYMBOL(__breadahead_gfp);
> -
>  /**
>   *  __bread_gfp() - reads a specified block and returns the bh
>   *  @bdev: the block_device to read from
> diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
> index 089c9ade4325..c3863c417b00 100644
> --- a/include/linux/buffer_head.h
> +++ b/include/linux/buffer_head.h
> @@ -214,8 +214,6 @@ struct buffer_head *__getblk_gfp(struct block_device *bdev, sector_t block,
>  void __brelse(struct buffer_head *);
>  void __bforget(struct buffer_head *);
>  void __breadahead(struct block_device *, sector_t block, unsigned int size);
> -void __breadahead_gfp(struct block_device *, sector_t block, unsigned int size,
> -		  gfp_t gfp);
>  struct buffer_head *__bread_gfp(struct block_device *,
>  				sector_t block, unsigned size, gfp_t gfp);
>  void invalidate_bh_lrus(void);
> @@ -340,12 +338,6 @@ sb_breadahead(struct super_block *sb, sector_t block)
>  	__breadahead(sb->s_bdev, block, sb->s_blocksize);
>  }
>  
> -static inline void
> -sb_breadahead_unmovable(struct super_block *sb, sector_t block)
> -{
> -	__breadahead_gfp(sb->s_bdev, block, sb->s_blocksize, 0);
> -}
> -
>  static inline struct buffer_head *
>  sb_getblk(struct super_block *sb, sector_t block)
>  {
> -- 
> 2.31.1
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR