Thread (4 messages) 4 messages, 2 authors, 2021-01-11

RE: Re: [PATCH] ext4: Change list_for_each to list_for_each_entry

From: Daejun Park <hidden>
Date: 2021-01-11 01:19:26
Also in: lkml

Hi Harshad,
quoted
quoted
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 <redacted>
---
 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);
Variable "pos" isn't used anymore after this patch. You removed it for
the ext4_fc_submit_inode_data_all() function, but missed removing it
in this function. That's throwing me a warning.
Thanks for comment, I will remove this. And I will change some list_for_each_safe
macro at new patch.

Thanks,
Daejun
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