* [PATCH v2] ext4: Change list_for_each* to list_for_each_entry*
[not found] <CGME20210111013726epcms2p4579ae56040d7043db785bf0d0a785dc7@epcms2p4>
@ 2021-01-11 1:37 ` Daejun Park
2021-02-03 5:05 ` Theodore Ts'o
0 siblings, 1 reply; 2+ messages in thread
From: Daejun Park @ 2021-01-11 1:37 UTC (permalink / raw)
To: harshad shirwadkar, tytso@mit.edu, adilger.kernel@dilger.ca,
Daejun Park
Cc: linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org
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>
---
fs/ext4/fast_commit.c | 29 +++++++++++------------------
1 file changed, 11 insertions(+), 18 deletions(-)
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index 4fcc21c25e79..b184cc2567fc 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);
@@ -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);
--
2.25.1
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