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Code Issues Releases Wiki Activity

ext4: Change list_for_each* to list_for_each_entry*

Browse source 
In the fast_commit.c, 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@samsung.com>
Link: https://lore.kernel.org/r/20210111013726epcms2p4579ae56040d7043db785bf0d0a785dc7@epcms2p4
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Daejun Park 2021-01-11 10:37:26 +09:00 committed by Theodore Ts'o
parent 027f14f535
commit 96e7c02d0b
1 changed files with 11 additions and 18 deletions
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29
fs/ext4/fast_commit.c
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@ -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);
@ -978,17 +976,15 @@ __releases(&sbi->s_fc_lock)
{
struct super_block *sb = (struct super_block *)(journal->j_private);
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_fc_dentry_update *fc_dentry;
struct ext4_fc_dentry_update *fc_dentry, *fc_dentry_n;
struct inode *inode;
struct list_head *pos, *n, *fcd_pos, *fcd_n;
struct ext4_inode_info *ei;
struct ext4_inode_info *ei, *ei_n;
int ret;
if (list_empty(&sbi->s_fc_dentry_q[FC_Q_MAIN]))
return 0;
list_for_each_safe(fcd_pos, fcd_n, &sbi->s_fc_dentry_q[FC_Q_MAIN]) {
fc_dentry = list_entry(fcd_pos, struct ext4_fc_dentry_update,
fcd_list);
list_for_each_entry_safe(fc_dentry, fc_dentry_n,
&sbi->s_fc_dentry_q[FC_Q_MAIN], fcd_list) {
if (fc_dentry->fcd_op != EXT4_FC_TAG_CREAT) {
spin_unlock(&sbi->s_fc_lock);
if (!ext4_fc_add_dentry_tlv(
@ -1004,8 +1000,8 @@ __releases(&sbi->s_fc_lock)
}
inode = NULL;
list_for_each_safe(pos, n, &sbi->s_fc_q[FC_Q_MAIN]) {
ei = list_entry(pos, struct ext4_inode_info, i_fc_list);
list_for_each_entry_safe(ei, ei_n, &sbi->s_fc_q[FC_Q_MAIN],
i_fc_list) {
if (ei->vfs_inode.i_ino == fc_dentry->fcd_ino) {
inode = &ei->vfs_inode;
break;
@ -1057,7 +1053,6 @@ static int ext4_fc_perform_commit(journal_t *journal)
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_inode_info *iter;
struct ext4_fc_head head;
struct list_head *pos;
struct inode *inode;
struct blk_plug plug;
int ret = 0;
@ -1099,8 +1094,7 @@ 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;
@ -1226,9 +1220,8 @@ static void ext4_fc_cleanup(journal_t *journal, int full)
{
struct super_block *sb = journal->j_private;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_inode_info *iter;
struct ext4_inode_info *iter, *iter_n;
struct ext4_fc_dentry_update *fc_dentry;
struct list_head *pos, *n;
if (full && sbi->s_fc_bh)
sbi->s_fc_bh = NULL;
@ -1236,8 +1229,8 @@ static void ext4_fc_cleanup(journal_t *journal, int full)
jbd2_fc_release_bufs(journal);
spin_lock(&sbi->s_fc_lock);
list_for_each_safe(pos, n, &sbi->s_fc_q[FC_Q_MAIN]) {
iter = list_entry(pos, struct ext4_inode_info, i_fc_list);
list_for_each_entry_safe(iter, iter_n, &sbi->s_fc_q[FC_Q_MAIN],
i_fc_list) {
list_del_init(&iter->i_fc_list);
ext4_clear_inode_state(&iter->vfs_inode,
EXT4_STATE_FC_COMMITTING);