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ext4: use LIST_HEAD() to initialize the list_head in mballoc.c

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Use LIST_HEAD() to initialize the list_head instead of open-coding it.

Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230812071839.3481909-1-ruanjinjie@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ruan Jinjie 2023-08-12 15:18:39 +08:00 committed by Theodore Ts'o
parent 03de20bed2
commit 0f6bc57971
1 changed files with 5 additions and 13 deletions
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18
fs/ext4/mballoc.c
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@ -3504,11 +3504,10 @@ static void ext4_discard_work(struct work_struct *work)
struct super_block *sb = sbi->s_sb;
struct ext4_free_data *fd, *nfd;
struct ext4_buddy e4b;
struct list_head discard_list;
LIST_HEAD(discard_list);
ext4_group_t grp, load_grp;
int err = 0;
INIT_LIST_HEAD(&discard_list);
spin_lock(&sbi->s_md_lock);
list_splice_init(&sbi->s_discard_list, &discard_list);
spin_unlock(&sbi->s_md_lock);
@ -3882,12 +3881,10 @@ void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_free_data *entry, *tmp;
struct list_head freed_data_list;
LIST_HEAD(freed_data_list);
struct list_head *cut_pos = NULL;
bool wake;
INIT_LIST_HEAD(&freed_data_list);
spin_lock(&sbi->s_md_lock);
list_for_each_entry(entry, &sbi->s_freed_data_list, efd_list) {
if (entry->efd_tid != commit_tid)
@ -5414,7 +5411,7 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,
struct ext4_group_info *grp = ext4_get_group_info(sb, group);
struct buffer_head *bitmap_bh = NULL;
struct ext4_prealloc_space *pa, *tmp;
struct list_head list;
LIST_HEAD(list);
struct ext4_buddy e4b;
struct ext4_inode_info *ei;
int err;
@ -5443,7 +5440,6 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,
goto out_dbg;
}
INIT_LIST_HEAD(&list);
ext4_lock_group(sb, group);
list_for_each_entry_safe(pa, tmp,
&grp->bb_prealloc_list, pa_group_list) {
@ -5524,7 +5520,7 @@ void ext4_discard_preallocations(struct inode *inode, unsigned int needed)
struct buffer_head *bitmap_bh = NULL;
struct ext4_prealloc_space *pa, *tmp;
ext4_group_t group = 0;
struct list_head list;
LIST_HEAD(list);
struct ext4_buddy e4b;
struct rb_node *iter;
int err;
@ -5541,8 +5537,6 @@ void ext4_discard_preallocations(struct inode *inode, unsigned int needed)
trace_ext4_discard_preallocations(inode,
atomic_read(&ei->i_prealloc_active), needed);
INIT_LIST_HEAD(&list);
if (needed == 0)
needed = UINT_MAX;
@ -5858,13 +5852,11 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
{
ext4_group_t group = 0;
struct ext4_buddy e4b;
struct list_head discard_list;
LIST_HEAD(discard_list);
struct ext4_prealloc_space *pa, *tmp;
mb_debug(sb, "discard locality group preallocation\n");
INIT_LIST_HEAD(&discard_list);
spin_lock(&lg->lg_prealloc_lock);
list_for_each_entry_rcu(pa, &lg->lg_prealloc_list[order],
pa_node.lg_list,