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-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/mballoc.c18
2 files changed, 6 insertions, 14 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index cd4ccae1e28a..3b8bc44be528 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1564,7 +1564,7 @@ struct ext4_sb_info {
unsigned int *s_mb_maxs;
unsigned int s_group_info_size;
unsigned int s_mb_free_pending;
- struct list_head s_freed_data_list; /* List of blocks to be freed
+ struct list_head s_freed_data_list[2]; /* List of blocks to be freed
after commit completed */
struct list_head s_discard_list;
struct work_struct s_discard_work;
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 1e599305d85f..1d65c738c4c9 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3631,7 +3631,8 @@ int ext4_mb_init(struct super_block *sb)
spin_lock_init(&sbi->s_md_lock);
sbi->s_mb_free_pending = 0;
- INIT_LIST_HEAD(&sbi->s_freed_data_list);
+ INIT_LIST_HEAD(&sbi->s_freed_data_list[0]);
+ INIT_LIST_HEAD(&sbi->s_freed_data_list[1]);
INIT_LIST_HEAD(&sbi->s_discard_list);
INIT_WORK(&sbi->s_discard_work, ext4_discard_work);
atomic_set(&sbi->s_retry_alloc_pending, 0);
@@ -3883,19 +3884,10 @@ 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;
LIST_HEAD(freed_data_list);
- struct list_head *cut_pos = NULL;
+ struct list_head *s_freed_head = &sbi->s_freed_data_list[commit_tid & 1];
bool wake;
- spin_lock(&sbi->s_md_lock);
- list_for_each_entry(entry, &sbi->s_freed_data_list, efd_list) {
- if (entry->efd_tid != commit_tid)
- break;
- cut_pos = &entry->efd_list;
- }
- if (cut_pos)
- list_cut_position(&freed_data_list, &sbi->s_freed_data_list,
- cut_pos);
- spin_unlock(&sbi->s_md_lock);
+ list_replace_init(s_freed_head, &freed_data_list);
list_for_each_entry(entry, &freed_data_list, efd_list)
ext4_free_data_in_buddy(sb, entry);
@@ -6378,7 +6370,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
}
spin_lock(&sbi->s_md_lock);
- list_add_tail(&new_entry->efd_list, &sbi->s_freed_data_list);
+ list_add_tail(&new_entry->efd_list, &sbi->s_freed_data_list[new_entry->efd_tid & 1]);
sbi->s_mb_free_pending += clusters;
spin_unlock(&sbi->s_md_lock);
}