linux-kernel - Re: [f2fs-dev] [PATCH 2/6] f2fs: declare nested quota

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Message-ID: <0668612e-678c-e434-277b-d393b9933250@huawei.com>
Date:   Tue, 10 Dec 2019 14:20:11 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linux-f2fs-devel@...ts.sourceforge.net>
Subject: Re: [f2fs-dev] [PATCH 2/6] f2fs: declare nested quota_sem and remove
 unnecessary sems

On 2019/12/10 6:23, Jaegeuk Kim wrote:
> 1.
> f2fs_quota_sync
>  -> down_read(&sbi->quota_sem)
>  -> dquot_writeback_dquots
>   -> f2fs_dquot_commit
>    -> down_read(&sbi->quota_sem)
> 
> 2.
> f2fs_quota_sync
>  -> down_read(&sbi->quota_sem)
>   -> f2fs_write_data_pages
>    -> f2fs_write_single_data_page
>     -> down_write(&F2FS_I(inode)->i_sem)
> 
> f2fs_mkdir
>  -> f2fs_do_add_link
>    -> down_write(&F2FS_I(inode)->i_sem)
>    -> f2fs_init_inode_metadata
>     -> f2fs_new_node_page
>      -> dquot_alloc_inode
>       -> f2fs_dquot_mark_dquot_dirty
>        -> down_read(&sbi->quota_sem)
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>

Reviewed-by: Chao Yu <yuchao0@...wei.com>

Thanks,