linux-ext4 - Re: [PATCH 10/11] ext4: Remove unnecessary quota functions

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Date:	Tue, 20 Jan 2009 13:41:54 -0800
From:	Mingming Cao <cmm@...ibm.com>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 10/11] ext4: Remove unnecessary quota functions


在 2009-01-16五的 19:08 +0100，Jan Kara写道：
> ext4_dquot_initialize() and ext4_dquot_drop() is no longer
> needed because of modified quota locking.
> 
> Signed-off-by: Jan Kara <jack@...e.cz>

Reviewed_by: Mingming Cao <cmm@...ibm.com>
> ---
>  fs/ext4/super.c |   44 ++------------------------------------------
>  1 files changed, 2 insertions(+), 42 deletions(-)
> 
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index e5f06a5..f0785fd 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -926,8 +926,6 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page, gfp_
>  #define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group")
>  #define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
> 
> -static int ext4_dquot_initialize(struct inode *inode, int type);
> -static int ext4_dquot_drop(struct inode *inode);
>  static int ext4_write_dquot(struct dquot *dquot);
>  static int ext4_acquire_dquot(struct dquot *dquot);
>  static int ext4_release_dquot(struct dquot *dquot);
> @@ -942,8 +940,8 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
>  				const char *data, size_t len, loff_t off);
> 
>  static struct dquot_operations ext4_quota_operations = {
> -	.initialize	= ext4_dquot_initialize,
> -	.drop		= ext4_dquot_drop,
> +	.initialize	= dquot_initialize,
> +	.drop		= dquot_drop,
>  	.alloc_space	= dquot_alloc_space,
>  	.alloc_inode	= dquot_alloc_inode,
>  	.free_space	= dquot_free_space,
> @@ -3378,44 +3376,6 @@ static inline struct inode *dquot_to_inode(struct dquot *dquot)
>  	return sb_dqopt(dquot->dq_sb)->files[dquot->dq_type];
>  }
> 
> -static int ext4_dquot_initialize(struct inode *inode, int type)
> -{
> -	handle_t *handle;
> -	int ret, err;
> -
> -	/* We may create quota structure so we need to reserve enough blocks */
> -	handle = ext4_journal_start(inode, 2*EXT4_QUOTA_INIT_BLOCKS(inode->i_sb));
> -	if (IS_ERR(handle))
> -		return PTR_ERR(handle);
> -	ret = dquot_initialize(inode, type);
> -	err = ext4_journal_stop(handle);
> -	if (!ret)
> -		ret = err;
> -	return ret;
> -}
> -
> -static int ext4_dquot_drop(struct inode *inode)
> -{
> -	handle_t *handle;
> -	int ret, err;
> -
> -	/* We may delete quota structure so we need to reserve enough blocks */
> -	handle = ext4_journal_start(inode, 2*EXT4_QUOTA_DEL_BLOCKS(inode->i_sb));
> -	if (IS_ERR(handle)) {
> -		/*
> -		 * We call dquot_drop() anyway to at least release references
> -		 * to quota structures so that umount does not hang.
> -		 */
> -		dquot_drop(inode);
> -		return PTR_ERR(handle);
> -	}
> -	ret = dquot_drop(inode);
> -	err = ext4_journal_stop(handle);
> -	if (!ret)
> -		ret = err;
> -	return ret;
> -}
> -
>  static int ext4_write_dquot(struct dquot *dquot)
>  {
>  	int ret, err;

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