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Date:   Tue, 5 Jan 2021 13:56:43 -0800
From:   harshad shirwadkar <harshadshirwadkar@...il.com>
To:     daejun7.park@...sung.com
Cc:     "tytso@....edu" <tytso@....edu>,
        "adilger.kernel@...ger.ca" <adilger.kernel@...ger.ca>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH] ext4: Change list_for_each to list_for_each_entry

Looks good to me, thanks!

Reviewed-by: Harshad Shirwadkar <harshadshirwadkar@...il.com>

On Wed, Dec 30, 2020 at 5:56 PM Daejun Park <daejun7.park@...sung.com> wrote:
>
> list_for_each + list_entry can be changed to list_for_each_entry
> It reduces number of variables and lines.
>
> Signed-off-by: Daejun Park <daejun7.park@...sung.com>
> ---
>  fs/ext4/fast_commit.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
> index 5b6bb3ef0f33..dc58471971db 100644
> --- a/fs/ext4/fast_commit.c
> +++ b/fs/ext4/fast_commit.c
> @@ -915,13 +915,11 @@ static int ext4_fc_submit_inode_data_all(journal_t *journal)
>         struct super_block *sb = (struct super_block *)(journal->j_private);
>         struct ext4_sb_info *sbi = EXT4_SB(sb);
>         struct ext4_inode_info *ei;
> -       struct list_head *pos;
>         int ret = 0;
>
>         spin_lock(&sbi->s_fc_lock);
>         ext4_set_mount_flag(sb, EXT4_MF_FC_COMMITTING);
> -       list_for_each(pos, &sbi->s_fc_q[FC_Q_MAIN]) {
> -               ei = list_entry(pos, struct ext4_inode_info, i_fc_list);
> +       list_for_each_entry(ei, &sbi->s_fc_q[FC_Q_MAIN], i_fc_list) {
>                 ext4_set_inode_state(&ei->vfs_inode, EXT4_STATE_FC_COMMITTING);
>                 while (atomic_read(&ei->i_fc_updates)) {
>                         DEFINE_WAIT(wait);
> @@ -1099,8 +1097,7 @@ static int ext4_fc_perform_commit(journal_t *journal)
>                 goto out;
>         }
>
> -       list_for_each(pos, &sbi->s_fc_q[FC_Q_MAIN]) {
> -               iter = list_entry(pos, struct ext4_inode_info, i_fc_list);
> +       list_for_each_entry(iter, &sbi->s_fc_q[FC_Q_MAIN], i_fc_list) {
>                 inode = &iter->vfs_inode;
>                 if (!ext4_test_inode_state(inode, EXT4_STATE_FC_COMMITTING))
>                         continue;
> --
> 2.25.1
>

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