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exfat: convert exfat_add_entry() to use dentry cache

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After this conversion, if "dirsync" or "sync" is enabled, the
number of synchronized dentries in exfat_add_entry() will change
from 2 to 1.

Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Yuezhang Mo 2022-08-04 16:01:50 +08:00 committed by Namjae Jeon
parent 01da3a5176
commit cf8663fa99
3 changed files with 22 additions and 33 deletions
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37
fs/exfat/dir.c
View File

@ -448,53 +448,34 @@ static void exfat_init_name_entry(struct exfat_dentry *ep,
}
}
int exfat_init_dir_entry(struct inode *inode, struct exfat_chain *p_dir,
int entry, unsigned int type, unsigned int start_clu,
unsigned long long size)
void exfat_init_dir_entry(struct exfat_entry_set_cache *es,
unsigned int type, unsigned int start_clu,
unsigned long long size, struct timespec64 *ts)
{
struct super_block *sb = inode->i_sb;
struct super_block *sb = es->sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct timespec64 ts = current_time(inode);
struct exfat_dentry *ep;
struct buffer_head *bh;
/*
* We cannot use exfat_get_dentry_set here because file ep is not
* initialized yet.
*/
ep = exfat_get_dentry(sb, p_dir, entry, &bh);
if (!ep)
return -EIO;
ep = exfat_get_dentry_cached(es, ES_IDX_FILE);
exfat_set_entry_type(ep, type);
exfat_set_entry_time(sbi, &ts,
exfat_set_entry_time(sbi, ts,
&ep->dentry.file.create_tz,
&ep->dentry.file.create_time,
&ep->dentry.file.create_date,
&ep->dentry.file.create_time_cs);
exfat_set_entry_time(sbi, &ts,
exfat_set_entry_time(sbi, ts,
&ep->dentry.file.modify_tz,
&ep->dentry.file.modify_time,
&ep->dentry.file.modify_date,
&ep->dentry.file.modify_time_cs);
exfat_set_entry_time(sbi, &ts,
exfat_set_entry_time(sbi, ts,
&ep->dentry.file.access_tz,
&ep->dentry.file.access_time,
&ep->dentry.file.access_date,
NULL);
exfat_update_bh(bh, IS_DIRSYNC(inode));
brelse(bh);
ep = exfat_get_dentry(sb, p_dir, entry + 1, &bh);
if (!ep)
return -EIO;
ep = exfat_get_dentry_cached(es, ES_IDX_STREAM);
exfat_init_stream_entry(ep, start_clu, size);
exfat_update_bh(bh, IS_DIRSYNC(inode));
brelse(bh);
return 0;
}
int exfat_update_dir_chksum(struct inode *inode, struct exfat_chain *p_dir,

6
fs/exfat/exfat_fs.h
View File

@ -480,9 +480,9 @@ int exfat_get_cluster(struct inode *inode, unsigned int cluster,
extern const struct inode_operations exfat_dir_inode_operations;
extern const struct file_operations exfat_dir_operations;
unsigned int exfat_get_entry_type(struct exfat_dentry *p_entry);
int exfat_init_dir_entry(struct inode *inode, struct exfat_chain *p_dir,
int entry, unsigned int type, unsigned int start_clu,
unsigned long long size);
void exfat_init_dir_entry(struct exfat_entry_set_cache *es,
unsigned int type, unsigned int start_clu,
unsigned long long size, struct timespec64 *ts);
int exfat_init_ext_entry(struct inode *inode, struct exfat_chain *p_dir,
int entry, int num_entries, struct exfat_uni_name *p_uniname);
int exfat_remove_entries(struct inode *inode, struct exfat_chain *p_dir,

12
fs/exfat/namei.c
View File

@ -499,6 +499,8 @@ static int exfat_add_entry(struct inode *inode, const char *path,
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_uni_name uniname;
struct exfat_chain clu;
struct timespec64 ts = current_time(inode);
struct exfat_entry_set_cache es;
int clu_size = 0;
unsigned int start_clu = EXFAT_FREE_CLUSTER;
@ -531,8 +533,14 @@ static int exfat_add_entry(struct inode *inode, const char *path,
/* fill the dos name directory entry information of the created file.
* the first cluster is not determined yet. (0)
*/
ret = exfat_init_dir_entry(inode, p_dir, dentry, type,
start_clu, clu_size);
ret = exfat_get_empty_dentry_set(&es, sb, p_dir, dentry, num_entries);
if (ret)
goto out;
exfat_init_dir_entry(&es, type, start_clu, clu_size, &ts);
ret = exfat_put_dentry_set(&es, IS_DIRSYNC(inode));
if (ret)
goto out;