linux-kernel - Re: [PATCH v3 05/12] ext4: passing block allocation information to ext4_es_insert

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Message-ID: <20240904102103.3lss7s5yxavcnjwm@quack3>
Date: Wed, 4 Sep 2024 12:21:03 +0200
From: Jan Kara <jack@...e.cz>
To: Zhang Yi <yi.zhang@...weicloud.com>
Cc: linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, tytso@....edu,
	adilger.kernel@...ger.ca, jack@...e.cz, ritesh.list@...il.com,
	yi.zhang@...wei.com, chengzhihao1@...wei.com, yukuai3@...wei.com
Subject: Re: [PATCH v3 05/12] ext4: passing block allocation information to
 ext4_es_insert_extent()

On Tue 13-08-24 20:34:45, Zhang Yi wrote:
> From: Zhang Yi <yi.zhang@...wei.com>
> 
> Just pass the block allocation flag to ext4_es_insert_extent() when we
> replacing a current extent after an actually block allocation or extent
> status conversion, this flag will be used by later changes.
> 
> Suggested-by: Jan Kara <jack@...e.cz>
> Signed-off-by: Zhang Yi <yi.zhang@...wei.com>

Looks good. Just one suggestion below. With that feel free to add:

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

> @@ -848,7 +848,7 @@ static int __es_insert_extent(struct inode *inode, struct extent_status *newes,
>   */
>  void ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk,
>  			   ext4_lblk_t len, ext4_fsblk_t pblk,
> -			   unsigned int status)
> +			   unsigned int status, int flags)

Since you pass flags to ext4_es_insert_extent() only from one place, let's
not pretend these are always full mapping flags and just make this new
argument:

bool delalloc_reserve_used

and from ext4_map_blocks_create() you can pass flags &
EXT4_GET_BLOCKS_DELALLOC_RESERVE.

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR