renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-11-23 10:06:28 +08:00
Code

Description for this pull request:

Browse Source 
- Improve dirsync performance by syncing on a dentry-set rather than
     on a per-directory entry
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEE6NzKS6Uv/XAAGHgyZwv7A1FEIQgFAmX653kWHGxpbmtpbmpl
 b25Aa2VybmVsLm9yZwAKCRBnC/sDUUQhCMEZD/9bpRN1V5YezmQUUh928yC0OWai
 aEDZqmzEsrJ7wXKUYmwjCzxO9/h3CwdtWTaJMctz2XlfJ9L62hiGXki4Cc27vfgs
 RGDV7fHpRmRq+JxgZN+UEnfrJx6kA0xrOaoyrbvT0t8pTCyK8yOY28YsltbI8wKd
 yQbWS4u4r1/Gugfry7PeGA5x6fxGcP/kbjB81Q1+/ilJetqELcUH9INOGSwvfzOh
 k9lgF+ujJVauzP1Pbw4fSZhcfXGYu0x4rbwcUAJUvuc3NXbotKEAW/ICJW1bH5En
 nN7IjiCYwMjEpK7H4zaZ61zrTIfe/MYgKLsq5XWYrvAmSL8QIlJiB4gbSpwd95gc
 7AK4d4mgYrF3oZPjYvb7kpbPtrNywQzIhef2W67E+fGifAKSsuI8gf+LYA2a7m5A
 HqTeL+3z1DnCwEGfLkNtEBy4xbv039dftjDcR8qzPs3WgwWU7G1nhwuQttcXC1qB
 p5eYxL1RvCbDXER9K6chdYQg7KkxCThlIGuG6shqQt4ybApyGbngmw7s3laUHMZQ
 3R3eD1UqtDb3vr04/PmvQ8NbLy0js8Q2lmjIowznyO/ahpCw/++OgX7T4Q+Sse6h
 xfGj8YkyeXNF7t6NwXhErdygvovoXQ4ADZIcxlhSc3NKnZUzL7RDEx5yMUzKggHu
 BlZlCJZoOoAm5Gk9Cw==
 =0fPf
 -----END PGP SIGNATURE-----

Merge tag 'exfat-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat

Pull exfat updates from Namjae Jeon:

 - Improve dirsync performance by syncing on a dentry-set rather than on
   a per-directory entry

* tag 'exfat-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
  exfat: remove duplicate update parent dir
  exfat: do not sync parent dir if just update timestamp
  exfat: remove unused functions
  exfat: convert exfat_find_empty_entry() to use dentry cache
  exfat: convert exfat_init_ext_entry() to use dentry cache
  exfat: move free cluster out of exfat_init_ext_entry()
  exfat: convert exfat_remove_entries() to use dentry cache
  exfat: convert exfat_add_entry() to use dentry cache
  exfat: add exfat_get_empty_dentry_set() helper
  exfat: add __exfat_get_dentry_set() helper
This commit is contained in:
Linus Torvalds 2024-03-21 09:47:12 -07:00
commit 1b3e251373
4 changed files with 291 additions and 374 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

290
fs/exfat/dir.c
View File

@ -448,88 +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,
int entry)
{
struct super_block *sb = inode->i_sb;
int ret = 0;
int i, num_entries;
u16 chksum;
struct exfat_dentry *ep, *fep;
struct buffer_head *fbh, *bh;
fep = exfat_get_dentry(sb, p_dir, entry, &fbh);
if (!fep)
return -EIO;
num_entries = fep->dentry.file.num_ext + 1;
chksum = exfat_calc_chksum16(fep, DENTRY_SIZE, 0, CS_DIR_ENTRY);
for (i = 1; i < num_entries; i++) {
ep = exfat_get_dentry(sb, p_dir, entry + i, &bh);
if (!ep) {
ret = -EIO;
goto release_fbh;
}
chksum = exfat_calc_chksum16(ep, DENTRY_SIZE, chksum,
CS_DEFAULT);
brelse(bh);
}
fep->dentry.file.checksum = cpu_to_le16(chksum);
exfat_update_bh(fbh, IS_DIRSYNC(inode));
release_fbh:
brelse(fbh);
return ret;
}
static void exfat_free_benign_secondary_clusters(struct inode *inode,
@ -551,76 +497,49 @@ static void exfat_free_benign_secondary_clusters(struct inode *inode,
exfat_free_cluster(inode, &dir);
}
int exfat_init_ext_entry(struct inode *inode, struct exfat_chain *p_dir,
int entry, int num_entries, struct exfat_uni_name *p_uniname)
void exfat_init_ext_entry(struct exfat_entry_set_cache *es, int num_entries,
struct exfat_uni_name *p_uniname)
{
struct super_block *sb = inode->i_sb;
int i;
unsigned short *uniname = p_uniname->name;
struct exfat_dentry *ep;
struct buffer_head *bh;
int sync = IS_DIRSYNC(inode);
ep = exfat_get_dentry(sb, p_dir, entry, &bh);
if (!ep)
return -EIO;
ep = exfat_get_dentry_cached(es, ES_IDX_FILE);
ep->dentry.file.num_ext = (unsigned char)(num_entries - 1);
exfat_update_bh(bh, sync);
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);
ep->dentry.stream.name_len = p_uniname->name_len;
ep->dentry.stream.name_hash = cpu_to_le16(p_uniname->name_hash);
exfat_update_bh(bh, sync);
brelse(bh);
for (i = EXFAT_FIRST_CLUSTER; i < num_entries; i++) {
ep = exfat_get_dentry(sb, p_dir, entry + i, &bh);
if (!ep)
return -EIO;
if (exfat_get_entry_type(ep) & TYPE_BENIGN_SEC)
exfat_free_benign_secondary_clusters(inode, ep);
for (i = ES_IDX_FIRST_FILENAME; i < num_entries; i++) {
ep = exfat_get_dentry_cached(es, i);
exfat_init_name_entry(ep, uniname);
exfat_update_bh(bh, sync);
brelse(bh);
uniname += EXFAT_FILE_NAME_LEN;
}
exfat_update_dir_chksum(inode, p_dir, entry);
return 0;
exfat_update_dir_chksum(es);
}
int exfat_remove_entries(struct inode *inode, struct exfat_chain *p_dir,
int entry, int order, int num_entries)
void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
int order)
{
struct super_block *sb = inode->i_sb;
int i;
struct exfat_dentry *ep;
struct buffer_head *bh;
for (i = order; i < num_entries; i++) {
ep = exfat_get_dentry(sb, p_dir, entry + i, &bh);
if (!ep)
return -EIO;
for (i = order; i < es->num_entries; i++) {
ep = exfat_get_dentry_cached(es, i);
if (exfat_get_entry_type(ep) & TYPE_BENIGN_SEC)
exfat_free_benign_secondary_clusters(inode, ep);
exfat_set_entry_type(ep, TYPE_DELETED);
exfat_update_bh(bh, IS_DIRSYNC(inode));
brelse(bh);
}
return 0;
if (order < es->num_entries)
es->modified = true;
}
void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es)
void exfat_update_dir_chksum(struct exfat_entry_set_cache *es)
{
int chksum_type = CS_DIR_ENTRY, i;
unsigned short chksum = 0;
@ -775,7 +694,6 @@ struct exfat_dentry *exfat_get_dentry(struct super_block *sb,
}
enum exfat_validate_dentry_mode {
ES_MODE_STARTED,
ES_MODE_GET_FILE_ENTRY,
ES_MODE_GET_STRM_ENTRY,
ES_MODE_GET_NAME_ENTRY,
@ -790,11 +708,6 @@ static bool exfat_validate_entry(unsigned int type,
return false;
switch (*mode) {
case ES_MODE_STARTED:
if (type != TYPE_FILE && type != TYPE_DIR)
return false;
*mode = ES_MODE_GET_FILE_ENTRY;
break;
case ES_MODE_GET_FILE_ENTRY:
if (type != TYPE_STREAM)
return false;
@ -834,7 +747,7 @@ struct exfat_dentry *exfat_get_dentry_cached(
}
/*
* Returns a set of dentries for a file or dir.
* Returns a set of dentries.
*
* Note It provides a direct pointer to bh->data via exfat_get_dentry_cached().
* User should call exfat_get_dentry_set() after setting 'modified' to apply
@ -842,22 +755,24 @@ struct exfat_dentry *exfat_get_dentry_cached(
*
* in:
* sb+p_dir+entry: indicates a file/dir
* type: specifies how many dentries should be included.
* num_entries: specifies how many dentries should be included.
* It will be set to es->num_entries if it is not 0.
* If num_entries is 0, es->num_entries will be obtained
* from the first dentry.
* out:
* es: pointer of entry set on success.
* return:
* pointer of entry set on success,
* NULL on failure.
* 0 on success
* -error code on failure
*/
int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
static int __exfat_get_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir, int entry,
unsigned int type)
unsigned int num_entries)
{
int ret, i, num_bh;
unsigned int off;
sector_t sec;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_dentry *ep;
int num_entries;
enum exfat_validate_dentry_mode mode = ES_MODE_STARTED;
struct buffer_head *bh;
if (p_dir->dir == DIR_DELETED) {
@ -880,12 +795,18 @@ int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
return -EIO;
es->bh[es->num_bh++] = bh;
ep = exfat_get_dentry_cached(es, ES_IDX_FILE);
if (!exfat_validate_entry(exfat_get_entry_type(ep), &mode))
goto put_es;
if (num_entries == ES_ALL_ENTRIES) {
struct exfat_dentry *ep;
ep = exfat_get_dentry_cached(es, ES_IDX_FILE);
if (ep->type != EXFAT_FILE) {
brelse(bh);
return -EIO;
}
num_entries = ep->dentry.file.num_ext + 1;
}
num_entries = type == ES_ALL_ENTRIES ?
ep->dentry.file.num_ext + 1 : type;
es->num_entries = num_entries;
num_bh = EXFAT_B_TO_BLK_ROUND_UP(off + num_entries * DENTRY_SIZE, sb);
@ -918,8 +839,27 @@ int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
es->bh[es->num_bh++] = bh;
}
return 0;
put_es:
exfat_put_dentry_set(es, false);
return -EIO;
}
int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir,
int entry, unsigned int num_entries)
{
int ret, i;
struct exfat_dentry *ep;
enum exfat_validate_dentry_mode mode = ES_MODE_GET_FILE_ENTRY;
ret = __exfat_get_dentry_set(es, sb, p_dir, entry, num_entries);
if (ret < 0)
return ret;
/* validate cached dentries */
for (i = ES_IDX_STREAM; i < num_entries; i++) {
for (i = ES_IDX_STREAM; i < es->num_entries; i++) {
ep = exfat_get_dentry_cached(es, i);
if (!exfat_validate_entry(exfat_get_entry_type(ep), &mode))
goto put_es;
@ -931,6 +871,85 @@ put_es:
return -EIO;
}
static int exfat_validate_empty_dentry_set(struct exfat_entry_set_cache *es)
{
struct exfat_dentry *ep;
struct buffer_head *bh;
int i, off;
bool unused_hit = false;
/*
* ONLY UNUSED OR DELETED DENTRIES ARE ALLOWED:
* Although it violates the specification for a deleted entry to
* follow an unused entry, some exFAT implementations could work
* like this. Therefore, to improve compatibility, let's allow it.
*/
for (i = 0; i < es->num_entries; i++) {
ep = exfat_get_dentry_cached(es, i);
if (ep->type == EXFAT_UNUSED) {
unused_hit = true;
} else if (!IS_EXFAT_DELETED(ep->type)) {
if (unused_hit)
goto err_used_follow_unused;
i++;
goto count_skip_entries;
}
}
return 0;
err_used_follow_unused:
off = es->start_off + (i << DENTRY_SIZE_BITS);
bh = es->bh[EXFAT_B_TO_BLK(off, es->sb)];
exfat_fs_error(es->sb,
"in sector %lld, dentry %d should be unused, but 0x%x",
bh->b_blocknr, off >> DENTRY_SIZE_BITS, ep->type);
return -EIO;
count_skip_entries:
es->num_entries = EXFAT_B_TO_DEN(EXFAT_BLK_TO_B(es->num_bh, es->sb) - es->start_off);
for (; i < es->num_entries; i++) {
ep = exfat_get_dentry_cached(es, i);
if (IS_EXFAT_DELETED(ep->type))
break;
}
return i;
}
/*
* Get an empty dentry set.
*
* in:
* sb+p_dir+entry: indicates the empty dentry location
* num_entries: specifies how many empty dentries should be included.
* out:
* es: pointer of empty dentry set on success.
* return:
* 0 : on success
* >0 : the dentries are not empty, the return value is the number of
* dentries to be skipped for the next lookup.
* <0 : on failure
*/
int exfat_get_empty_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir,
int entry, unsigned int num_entries)
{
int ret;
ret = __exfat_get_dentry_set(es, sb, p_dir, entry, num_entries);
if (ret < 0)
return ret;
ret = exfat_validate_empty_dentry_set(es);
if (ret)
exfat_put_dentry_set(es, false);
return ret;
}
static inline void exfat_reset_empty_hint(struct exfat_hint_femp *hint_femp)
{
hint_femp->eidx = EXFAT_HINT_NONE;
@ -1187,27 +1206,6 @@ found:
return dentry - num_ext;
}
int exfat_count_ext_entries(struct super_block *sb, struct exfat_chain *p_dir,
int entry, struct exfat_dentry *ep)
{
int i, count = 0;
unsigned int type;
struct exfat_dentry *ext_ep;
struct buffer_head *bh;
for (i = 0, entry++; i < ep->dentry.file.num_ext; i++, entry++) {
ext_ep = exfat_get_dentry(sb, p_dir, entry, &bh);
if (!ext_ep)
return -EIO;
type = exfat_get_entry_type(ext_ep);
brelse(bh);
if (type & TYPE_CRITICAL_SEC || type & TYPE_BENIGN_SEC)
count++;
}
return count;
}
int exfat_count_dir_entries(struct super_block *sb, struct exfat_chain *p_dir)
{
int i, count = 0;

25
fs/exfat/exfat_fs.h
View File

@ -431,8 +431,6 @@ int exfat_ent_get(struct super_block *sb, unsigned int loc,
unsigned int *content);
int exfat_ent_set(struct super_block *sb, unsigned int loc,
unsigned int content);
int exfat_count_ext_entries(struct super_block *sb, struct exfat_chain *p_dir,
int entry, struct exfat_dentry *p_entry);
int exfat_chain_cont_cluster(struct super_block *sb, unsigned int chain,
unsigned int len);
int exfat_zeroed_cluster(struct inode *dir, unsigned int clu);
@ -480,16 +478,14 @@ 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);
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,
int entry, int order, int num_entries);
int exfat_update_dir_chksum(struct inode *inode, struct exfat_chain *p_dir,
int entry);
void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es);
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);
void exfat_init_ext_entry(struct exfat_entry_set_cache *es, int num_entries,
struct exfat_uni_name *p_uniname);
void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
int order);
void exfat_update_dir_chksum(struct exfat_entry_set_cache *es);
int exfat_calc_num_entries(struct exfat_uni_name *p_uniname);
int exfat_find_dir_entry(struct super_block *sb, struct exfat_inode_info *ei,
struct exfat_chain *p_dir, struct exfat_uni_name *p_uniname,
@ -501,7 +497,10 @@ struct exfat_dentry *exfat_get_dentry_cached(struct exfat_entry_set_cache *es,
int num);
int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir, int entry,
unsigned int type);
unsigned int num_entries);
int exfat_get_empty_dentry_set(struct exfat_entry_set_cache *es,
struct super_block *sb, struct exfat_chain *p_dir, int entry,
unsigned int num_entries);
int exfat_put_dentry_set(struct exfat_entry_set_cache *es, int sync);
int exfat_count_dir_entries(struct super_block *sb, struct exfat_chain *p_dir);

2
fs/exfat/inode.c
View File

@ -94,7 +94,7 @@ int __exfat_write_inode(struct inode *inode, int sync)
ep2->dentry.stream.start_clu = EXFAT_FREE_CLUSTER;
}
exfat_update_dir_chksum_with_entry_set(&es);
exfat_update_dir_chksum(&es);
return exfat_put_dentry_set(&es, sync);
}

348
fs/exfat/namei.c
View File

@ -204,21 +204,16 @@ const struct dentry_operations exfat_utf8_dentry_ops = {
.d_compare = exfat_utf8_d_cmp,
};
/* used only in search empty_slot() */
#define CNT_UNUSED_NOHIT (-1)
#define CNT_UNUSED_HIT (-2)
/* search EMPTY CONTINUOUS "num_entries" entries */
static int exfat_search_empty_slot(struct super_block *sb,
struct exfat_hint_femp *hint_femp, struct exfat_chain *p_dir,
int num_entries)
int num_entries, struct exfat_entry_set_cache *es)
{
int i, dentry, num_empty = 0;
int i, dentry, ret;
int dentries_per_clu;
unsigned int type;
struct exfat_chain clu;
struct exfat_dentry *ep;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct buffer_head *bh;
int total_entries = EXFAT_CLU_TO_DEN(p_dir->size, sbi);
dentries_per_clu = sbi->dentries_per_clu;
@ -231,7 +226,7 @@ static int exfat_search_empty_slot(struct super_block *sb,
* Otherwise, and if "dentry + hint_famp->count" is also equal
* to "p_dir->size * dentries_per_clu", it means ENOSPC.
*/
if (dentry + hint_femp->count == p_dir->size * dentries_per_clu &&
if (dentry + hint_femp->count == total_entries &&
num_entries > hint_femp->count)
return -ENOSPC;
@ -242,69 +237,41 @@ static int exfat_search_empty_slot(struct super_block *sb,
dentry = 0;
}
while (clu.dir != EXFAT_EOF_CLUSTER) {
while (dentry + num_entries < total_entries &&
clu.dir != EXFAT_EOF_CLUSTER) {
i = dentry & (dentries_per_clu - 1);
for (; i < dentries_per_clu; i++, dentry++) {
ep = exfat_get_dentry(sb, &clu, i, &bh);
if (!ep)
return -EIO;
type = exfat_get_entry_type(ep);
brelse(bh);
ret = exfat_get_empty_dentry_set(es, sb, &clu, i, num_entries);
if (ret < 0)
return ret;
else if (ret == 0)
return dentry;
if (type == TYPE_UNUSED || type == TYPE_DELETED) {
num_empty++;
if (hint_femp->eidx == EXFAT_HINT_NONE) {
hint_femp->eidx = dentry;
hint_femp->count = CNT_UNUSED_NOHIT;
exfat_chain_set(&hint_femp->cur,
clu.dir, clu.size, clu.flags);
}
dentry += ret;
i += ret;
if (type == TYPE_UNUSED &&
hint_femp->count != CNT_UNUSED_HIT)
hint_femp->count = CNT_UNUSED_HIT;
while (i >= dentries_per_clu) {
if (clu.flags == ALLOC_NO_FAT_CHAIN) {
if (--clu.size > 0)
clu.dir++;
else
clu.dir = EXFAT_EOF_CLUSTER;
} else {
if (hint_femp->eidx != EXFAT_HINT_NONE &&
hint_femp->count == CNT_UNUSED_HIT) {
/* unused empty group means
* an empty group which includes
* unused dentry
*/
exfat_fs_error(sb,
"found bogus dentry(%d) beyond unused empty group(%d) (start_clu : %u, cur_clu : %u)",
dentry, hint_femp->eidx,
p_dir->dir, clu.dir);
if (exfat_get_next_cluster(sb, &clu.dir))
return -EIO;
}
num_empty = 0;
hint_femp->eidx = EXFAT_HINT_NONE;
}
if (num_empty >= num_entries) {
/* found and invalidate hint_femp */
hint_femp->eidx = EXFAT_HINT_NONE;
return (dentry - (num_entries - 1));
}
}
if (clu.flags == ALLOC_NO_FAT_CHAIN) {
if (--clu.size > 0)
clu.dir++;
else
clu.dir = EXFAT_EOF_CLUSTER;
} else {
if (exfat_get_next_cluster(sb, &clu.dir))
return -EIO;
i -= dentries_per_clu;
}
}
hint_femp->eidx = p_dir->size * dentries_per_clu - num_empty;
hint_femp->count = num_empty;
if (num_empty == 0)
hint_femp->eidx = dentry;
hint_femp->count = 0;
if (dentry == total_entries || clu.dir == EXFAT_EOF_CLUSTER)
exfat_chain_set(&hint_femp->cur, EXFAT_EOF_CLUSTER, 0,
clu.flags);
else
hint_femp->cur = clu;
return -ENOSPC;
}
@ -325,7 +292,8 @@ static int exfat_check_max_dentries(struct inode *inode)
* if there isn't any empty slot, expand cluster chain.
*/
static int exfat_find_empty_entry(struct inode *inode,
struct exfat_chain *p_dir, int num_entries)
struct exfat_chain *p_dir, int num_entries,
struct exfat_entry_set_cache *es)
{
int dentry;
unsigned int ret, last_clu;
@ -344,7 +312,7 @@ static int exfat_find_empty_entry(struct inode *inode,
}
while ((dentry = exfat_search_empty_slot(sb, &hint_femp, p_dir,
num_entries)) < 0) {
num_entries, es)) < 0) {
if (dentry == -EIO)
break;
@ -499,6 +467,8 @@ 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;
@ -513,7 +483,7 @@ static int exfat_add_entry(struct inode *inode, const char *path,
}
/* exfat_find_empty_entry must be called before alloc_cluster() */
dentry = exfat_find_empty_entry(inode, p_dir, num_entries);
dentry = exfat_find_empty_entry(inode, p_dir, num_entries, &es);
if (dentry < 0) {
ret = dentry; /* -EIO or -ENOSPC */
goto out;
@ -521,8 +491,10 @@ static int exfat_add_entry(struct inode *inode, const char *path,
if (type == TYPE_DIR && !sbi->options.zero_size_dir) {
ret = exfat_alloc_new_dir(inode, &clu);
if (ret)
if (ret) {
exfat_put_dentry_set(&es, false);
goto out;
}
start_clu = clu.dir;
clu_size = sbi->cluster_size;
}
@ -531,12 +503,10 @@ 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);
if (ret)
goto out;
exfat_init_dir_entry(&es, type, start_clu, clu_size, &ts);
exfat_init_ext_entry(&es, num_entries, &uniname);
ret = exfat_init_ext_entry(inode, p_dir, dentry, num_entries, &uniname);
ret = exfat_put_dentry_set(&es, IS_DIRSYNC(inode));
if (ret)
goto out;
@ -577,6 +547,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
struct exfat_dir_entry info;
loff_t i_pos;
int err;
loff_t size = i_size_read(dir);
mutex_lock(&EXFAT_SB(sb)->s_lock);
exfat_set_volume_dirty(sb);
@ -587,7 +558,7 @@ static int exfat_create(struct mnt_idmap *idmap, struct inode *dir,
inode_inc_iversion(dir);
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
if (IS_DIRSYNC(dir))
if (IS_DIRSYNC(dir) && size != i_size_read(dir))
exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
@ -795,12 +766,11 @@ unlock:
static int exfat_unlink(struct inode *dir, struct dentry *dentry)
{
struct exfat_chain cdir;
struct exfat_dentry *ep;
struct super_block *sb = dir->i_sb;
struct inode *inode = dentry->d_inode;
struct exfat_inode_info *ei = EXFAT_I(inode);
struct buffer_head *bh;
int num_entries, entry, err = 0;
struct exfat_entry_set_cache es;
int entry, err = 0;
mutex_lock(&EXFAT_SB(sb)->s_lock);
exfat_chain_dup(&cdir, &ei->dir);
@ -811,26 +781,20 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
goto unlock;
}
ep = exfat_get_dentry(sb, &cdir, entry, &bh);
if (!ep) {
err = exfat_get_dentry_set(&es, sb, &cdir, entry, ES_ALL_ENTRIES);
if (err) {
err = -EIO;
goto unlock;
}
num_entries = exfat_count_ext_entries(sb, &cdir, entry, ep);
if (num_entries < 0) {
err = -EIO;
brelse(bh);
goto unlock;
}
num_entries++;
brelse(bh);
exfat_set_volume_dirty(sb);
/* update the directory entry */
if (exfat_remove_entries(dir, &cdir, entry, 0, num_entries)) {
err = -EIO;
exfat_remove_entries(inode, &es, ES_IDX_FILE);
err = exfat_put_dentry_set(&es, IS_DIRSYNC(inode));
if (err)
goto unlock;
}
/* This doesn't modify ei */
ei->dir.dir = DIR_DELETED;
@ -838,10 +802,7 @@ static int exfat_unlink(struct inode *dir, struct dentry *dentry)
inode_inc_iversion(dir);
simple_inode_init_ts(dir);
exfat_truncate_inode_atime(dir);
if (IS_DIRSYNC(dir))
exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
mark_inode_dirty(dir);
clear_nlink(inode);
simple_inode_init_ts(inode);
@ -862,6 +823,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
struct exfat_chain cdir;
loff_t i_pos;
int err;
loff_t size = i_size_read(dir);
mutex_lock(&EXFAT_SB(sb)->s_lock);
exfat_set_volume_dirty(sb);
@ -872,7 +834,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir,
inode_inc_iversion(dir);
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
if (IS_DIRSYNC(dir))
if (IS_DIRSYNC(dir) && size != i_size_read(dir))
exfat_sync_inode(dir);
else
mark_inode_dirty(dir);
@ -946,13 +908,12 @@ static int exfat_check_dir_empty(struct super_block *sb,
static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
struct exfat_dentry *ep;
struct exfat_chain cdir, clu_to_free;
struct super_block *sb = inode->i_sb;
struct exfat_sb_info *sbi = EXFAT_SB(sb);
struct exfat_inode_info *ei = EXFAT_I(inode);
struct buffer_head *bh;
int num_entries, entry, err;
struct exfat_entry_set_cache es;
int entry, err;
mutex_lock(&EXFAT_SB(inode->i_sb)->s_lock);
@ -976,27 +937,20 @@ static int exfat_rmdir(struct inode *dir, struct dentry *dentry)
goto unlock;
}
ep = exfat_get_dentry(sb, &cdir, entry, &bh);
if (!ep) {
err = exfat_get_dentry_set(&es, sb, &cdir, entry, ES_ALL_ENTRIES);
if (err) {
err = -EIO;
goto unlock;
}
num_entries = exfat_count_ext_entries(sb, &cdir, entry, ep);
if (num_entries < 0) {
err = -EIO;
brelse(bh);
goto unlock;
}
num_entries++;
brelse(bh);
exfat_set_volume_dirty(sb);
err = exfat_remove_entries(dir, &cdir, entry, 0, num_entries);
if (err) {
exfat_err(sb, "failed to exfat_remove_entries : err(%d)", err);
exfat_remove_entries(inode, &es, ES_IDX_FILE);
err = exfat_put_dentry_set(&es, IS_DIRSYNC(dir));
if (err)
goto unlock;
}
ei->dir.dir = DIR_DELETED;
inode_inc_iversion(dir);
@ -1022,67 +976,52 @@ static int exfat_rename_file(struct inode *inode, struct exfat_chain *p_dir,
int oldentry, struct exfat_uni_name *p_uniname,
struct exfat_inode_info *ei)
{
int ret, num_old_entries, num_new_entries;
int ret, num_new_entries;
struct exfat_dentry *epold, *epnew;
struct super_block *sb = inode->i_sb;
struct buffer_head *new_bh, *old_bh;
struct exfat_entry_set_cache old_es, new_es;
int sync = IS_DIRSYNC(inode);
epold = exfat_get_dentry(sb, p_dir, oldentry, &old_bh);
if (!epold)
return -EIO;
num_old_entries = exfat_count_ext_entries(sb, p_dir, oldentry, epold);
if (num_old_entries < 0)
return -EIO;
num_old_entries++;
num_new_entries = exfat_calc_num_entries(p_uniname);
if (num_new_entries < 0)
return num_new_entries;
if (num_old_entries < num_new_entries) {
ret = exfat_get_dentry_set(&old_es, sb, p_dir, oldentry, ES_ALL_ENTRIES);
if (ret) {
ret = -EIO;
return ret;
}
epold = exfat_get_dentry_cached(&old_es, ES_IDX_FILE);
if (old_es.num_entries < num_new_entries) {
int newentry;
newentry =
exfat_find_empty_entry(inode, p_dir, num_new_entries);
if (newentry < 0)
return newentry; /* -EIO or -ENOSPC */
epnew = exfat_get_dentry(sb, p_dir, newentry, &new_bh);
if (!epnew)
return -EIO;
newentry = exfat_find_empty_entry(inode, p_dir, num_new_entries,
&new_es);
if (newentry < 0) {
ret = newentry; /* -EIO or -ENOSPC */
goto put_old_es;
}
epnew = exfat_get_dentry_cached(&new_es, ES_IDX_FILE);
*epnew = *epold;
if (exfat_get_entry_type(epnew) == TYPE_FILE) {
epnew->dentry.file.attr |= cpu_to_le16(EXFAT_ATTR_ARCHIVE);
ei->attr |= EXFAT_ATTR_ARCHIVE;
}
exfat_update_bh(new_bh, sync);
brelse(old_bh);
brelse(new_bh);
epold = exfat_get_dentry(sb, p_dir, oldentry + 1, &old_bh);
if (!epold)
return -EIO;
epnew = exfat_get_dentry(sb, p_dir, newentry + 1, &new_bh);
if (!epnew) {
brelse(old_bh);
return -EIO;
}
epold = exfat_get_dentry_cached(&old_es, ES_IDX_STREAM);
epnew = exfat_get_dentry_cached(&new_es, ES_IDX_STREAM);
*epnew = *epold;
exfat_update_bh(new_bh, sync);
brelse(old_bh);
brelse(new_bh);
ret = exfat_init_ext_entry(inode, p_dir, newentry,
num_new_entries, p_uniname);
exfat_init_ext_entry(&new_es, num_new_entries, p_uniname);
ret = exfat_put_dentry_set(&new_es, sync);
if (ret)
return ret;
goto put_old_es;
exfat_remove_entries(inode, p_dir, oldentry, 0,
num_old_entries);
exfat_remove_entries(inode, &old_es, ES_IDX_FILE);
ei->dir = *p_dir;
ei->entry = newentry;
} else {
@ -1090,85 +1029,72 @@ static int exfat_rename_file(struct inode *inode, struct exfat_chain *p_dir,
epold->dentry.file.attr |= cpu_to_le16(EXFAT_ATTR_ARCHIVE);
ei->attr |= EXFAT_ATTR_ARCHIVE;
}
exfat_update_bh(old_bh, sync);
brelse(old_bh);
ret = exfat_init_ext_entry(inode, p_dir, oldentry,
num_new_entries, p_uniname);
if (ret)
return ret;
exfat_remove_entries(inode, p_dir, oldentry, num_new_entries,
num_old_entries);
exfat_remove_entries(inode, &old_es, ES_IDX_FIRST_FILENAME + 1);
exfat_init_ext_entry(&old_es, num_new_entries, p_uniname);
}
return 0;
return exfat_put_dentry_set(&old_es, sync);
put_old_es:
exfat_put_dentry_set(&old_es, false);
return ret;
}
static int exfat_move_file(struct inode *inode, struct exfat_chain *p_olddir,
int oldentry, struct exfat_chain *p_newdir,
struct exfat_uni_name *p_uniname, struct exfat_inode_info *ei)
{
int ret, newentry, num_new_entries, num_old_entries;
int ret, newentry, num_new_entries;
struct exfat_dentry *epmov, *epnew;
struct super_block *sb = inode->i_sb;
struct buffer_head *mov_bh, *new_bh;
epmov = exfat_get_dentry(sb, p_olddir, oldentry, &mov_bh);
if (!epmov)
return -EIO;
num_old_entries = exfat_count_ext_entries(sb, p_olddir, oldentry,
epmov);
if (num_old_entries < 0)
return -EIO;
num_old_entries++;
struct exfat_entry_set_cache mov_es, new_es;
num_new_entries = exfat_calc_num_entries(p_uniname);
if (num_new_entries < 0)
return num_new_entries;
newentry = exfat_find_empty_entry(inode, p_newdir, num_new_entries);
if (newentry < 0)
return newentry; /* -EIO or -ENOSPC */
epnew = exfat_get_dentry(sb, p_newdir, newentry, &new_bh);
if (!epnew)
ret = exfat_get_dentry_set(&mov_es, sb, p_olddir, oldentry,
ES_ALL_ENTRIES);
if (ret)
return -EIO;
newentry = exfat_find_empty_entry(inode, p_newdir, num_new_entries,
&new_es);
if (newentry < 0) {
ret = newentry; /* -EIO or -ENOSPC */
goto put_mov_es;
}
epmov = exfat_get_dentry_cached(&mov_es, ES_IDX_FILE);
epnew = exfat_get_dentry_cached(&new_es, ES_IDX_FILE);
*epnew = *epmov;
if (exfat_get_entry_type(epnew) == TYPE_FILE) {
epnew->dentry.file.attr |= cpu_to_le16(EXFAT_ATTR_ARCHIVE);
ei->attr |= EXFAT_ATTR_ARCHIVE;
}
exfat_update_bh(new_bh, IS_DIRSYNC(inode));
brelse(mov_bh);
brelse(new_bh);
epmov = exfat_get_dentry(sb, p_olddir, oldentry + 1, &mov_bh);
if (!epmov)
return -EIO;
epnew = exfat_get_dentry(sb, p_newdir, newentry + 1, &new_bh);
if (!epnew) {
brelse(mov_bh);
return -EIO;
}
epmov = exfat_get_dentry_cached(&mov_es, ES_IDX_STREAM);
epnew = exfat_get_dentry_cached(&new_es, ES_IDX_STREAM);
*epnew = *epmov;
exfat_update_bh(new_bh, IS_DIRSYNC(inode));
brelse(mov_bh);
brelse(new_bh);
ret = exfat_init_ext_entry(inode, p_newdir, newentry, num_new_entries,
p_uniname);
if (ret)
return ret;
exfat_remove_entries(inode, p_olddir, oldentry, 0, num_old_entries);
exfat_init_ext_entry(&new_es, num_new_entries, p_uniname);
exfat_remove_entries(inode, &mov_es, ES_IDX_FILE);
exfat_chain_set(&ei->dir, p_newdir->dir, p_newdir->size,
p_newdir->flags);
ei->entry = newentry;
return 0;
ret = exfat_put_dentry_set(&new_es, IS_DIRSYNC(inode));
if (ret)
goto put_mov_es;
return exfat_put_dentry_set(&mov_es, IS_DIRSYNC(inode));
put_mov_es:
exfat_put_dentry_set(&mov_es, false);
return ret;
}
/* rename or move a old file into a new file */
@ -1186,7 +1112,6 @@ static int __exfat_rename(struct inode *old_parent_inode,
struct exfat_sb_info *sbi = EXFAT_SB(sb);
const unsigned char *new_path = new_dentry->d_name.name;
struct inode *new_inode = new_dentry->d_inode;
int num_entries;
struct exfat_inode_info *new_ei = NULL;
unsigned int new_entry_type = TYPE_UNUSED;
int new_entry = 0;
@ -1257,25 +1182,21 @@ static int __exfat_rename(struct inode *old_parent_inode,
&newdir, &uni_name, ei);
if (!ret && new_inode) {
struct exfat_entry_set_cache es;
/* delete entries of new_dir */
ep = exfat_get_dentry(sb, p_dir, new_entry, &new_bh);
if (!ep) {
ret = exfat_get_dentry_set(&es, sb, p_dir, new_entry,
ES_ALL_ENTRIES);
if (ret) {
ret = -EIO;
goto del_out;
}
num_entries = exfat_count_ext_entries(sb, p_dir, new_entry, ep);
if (num_entries < 0) {
ret = -EIO;
goto del_out;
}
brelse(new_bh);
exfat_remove_entries(new_inode, &es, ES_IDX_FILE);
if (exfat_remove_entries(new_inode, p_dir, new_entry, 0,
num_entries + 1)) {
ret = -EIO;
ret = exfat_put_dentry_set(&es, IS_DIRSYNC(new_inode));
if (ret)
goto del_out;
}
/* Free the clusters if new_inode is a dir(as if exfat_rmdir) */
if (new_entry_type == TYPE_DIR &&
@ -1317,6 +1238,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
struct super_block *sb = old_dir->i_sb;
loff_t i_pos;
int err;
loff_t size = i_size_read(new_dir);
/*
* The VFS already checks for existence, so for local filesystems
@ -1338,7 +1260,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
simple_rename_timestamp(old_dir, old_dentry, new_dir, new_dentry);
EXFAT_I(new_dir)->i_crtime = current_time(new_dir);
exfat_truncate_inode_atime(new_dir);
if (IS_DIRSYNC(new_dir))
if (IS_DIRSYNC(new_dir) && size != i_size_read(new_dir))
exfat_sync_inode(new_dir);
else
mark_inode_dirty(new_dir);
@ -1359,9 +1281,7 @@ static int exfat_rename(struct mnt_idmap *idmap,
}
inode_inc_iversion(old_dir);
if (IS_DIRSYNC(old_dir))
exfat_sync_inode(old_dir);
else
if (new_dir != old_dir)
mark_inode_dirty(old_dir);
if (new_inode) {