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Code Issues Releases Wiki Activity

ext4: factor out ext4_percpu_param_init() and ext4_percpu_param_destroy()

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Factor out ext4_percpu_param_init() and ext4_percpu_param_destroy(). And
also use ext4_percpu_param_destroy() in ext4_put_super() to avoid
duplicated code. No functional change.

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20230323140517.1070239-3-yanaijie@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Jason Yan 2023-03-23 22:05:11 +08:00 committed by Theodore Ts'o
parent db9345d9e6
commit 1f79467c8a
1 changed files with 46 additions and 39 deletions
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85
fs/ext4/super.c
View file

@ -1183,6 +1183,49 @@ static inline void ext4_quota_off_umount(struct super_block *sb)
}
#endif
static int ext4_percpu_param_init(struct ext4_sb_info *sbi)
{
ext4_fsblk_t block;
int err;
block = ext4_count_free_clusters(sbi->s_sb);
ext4_free_blocks_count_set(sbi->s_es, EXT4_C2B(sbi, block));
err = percpu_counter_init(&sbi->s_freeclusters_counter, block,
GFP_KERNEL);
if (!err) {
unsigned long freei = ext4_count_free_inodes(sbi->s_sb);
sbi->s_es->s_free_inodes_count = cpu_to_le32(freei);
err = percpu_counter_init(&sbi->s_freeinodes_counter, freei,
GFP_KERNEL);
}
if (!err)
err = percpu_counter_init(&sbi->s_dirs_counter,
ext4_count_dirs(sbi->s_sb), GFP_KERNEL);
if (!err)
err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0,
GFP_KERNEL);
if (!err)
err = percpu_counter_init(&sbi->s_sra_exceeded_retry_limit, 0,
GFP_KERNEL);
if (!err)
err = percpu_init_rwsem(&sbi->s_writepages_rwsem);
if (err)
ext4_msg(sbi->s_sb, KERN_ERR, "insufficient memory");
return err;
}
static void ext4_percpu_param_destroy(struct ext4_sb_info *sbi)
{
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
percpu_counter_destroy(&sbi->s_sra_exceeded_retry_limit);
percpu_free_rwsem(&sbi->s_writepages_rwsem);
}
static void ext4_put_super(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@ -1250,12 +1293,7 @@ static void ext4_put_super(struct super_block *sb)
kvfree(flex_groups);
}
rcu_read_unlock();
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
percpu_counter_destroy(&sbi->s_sra_exceeded_retry_limit);
percpu_free_rwsem(&sbi->s_writepages_rwsem);
ext4_percpu_param_destroy(sbi);
#ifdef CONFIG_QUOTA
for (i = 0; i < EXT4_MAXQUOTAS; i++)
kfree(get_qf_name(sb, sbi, i));
@ -5058,7 +5096,6 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
struct ext4_super_block *es = NULL;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct flex_groups **flex_groups;
ext4_fsblk_t block;
ext4_fsblk_t logical_sb_block;
struct inode *root;
int ret = -ENOMEM;
@ -5450,33 +5487,8 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
sbi->s_journal->j_commit_callback =
ext4_journal_commit_callback;
block = ext4_count_free_clusters(sb);
ext4_free_blocks_count_set(sbi->s_es,
EXT4_C2B(sbi, block));
err = percpu_counter_init(&sbi->s_freeclusters_counter, block,
GFP_KERNEL);
if (!err) {
unsigned long freei = ext4_count_free_inodes(sb);
sbi->s_es->s_free_inodes_count = cpu_to_le32(freei);
err = percpu_counter_init(&sbi->s_freeinodes_counter, freei,
GFP_KERNEL);
}
if (!err)
err = percpu_counter_init(&sbi->s_dirs_counter,
ext4_count_dirs(sb), GFP_KERNEL);
if (!err)
err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0,
GFP_KERNEL);
if (!err)
err = percpu_counter_init(&sbi->s_sra_exceeded_retry_limit, 0,
GFP_KERNEL);
if (!err)
err = percpu_init_rwsem(&sbi->s_writepages_rwsem);
if (err) {
ext4_msg(sb, KERN_ERR, "insufficient memory");
if (ext4_percpu_param_init(sbi))
goto failed_mount6;
}
if (ext4_has_feature_flex_bg(sb))
if (!ext4_fill_flex_info(sb)) {
@ -5566,12 +5578,7 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb)
kvfree(flex_groups);
}
rcu_read_unlock();
percpu_counter_destroy(&sbi->s_freeclusters_counter);
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
percpu_counter_destroy(&sbi->s_sra_exceeded_retry_limit);
percpu_free_rwsem(&sbi->s_writepages_rwsem);
ext4_percpu_param_destroy(sbi);
failed_mount5:
ext4_ext_release(sb);
ext4_release_system_zone(sb);