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f2fs: introduce f2fs_journal struct to wrap journal info 

Introduce a new structure f2fs_journal to wrap journal info in struct
f2fs_summary_block for readability.

struct f2fs_journal {
	union {
		__le16 n_nats;
		__le16 n_sits;
	};
	union {
		struct nat_journal nat_j;
		struct sit_journal sit_j;
		struct f2fs_extra_info info;
	};
} __packed;

struct f2fs_summary_block {
	struct f2fs_summary entries[ENTRIES_IN_SUM];
	struct f2fs_journal journal;
	struct summary_footer footer;
} __packed;

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2016-02-14 18:50:40 +08:00 committed by Jaegeuk Kim
parent 922ec355f8
commit dfc08a12e4
6 changed files with 77 additions and 72 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -1051,7 +1051,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
if (sb->s_bdev->bd_part)
kbytes_written += BD_PART_WRITTEN(sbi);
seg_i->sum_blk->info.kbytes_written = cpu_to_le64(kbytes_written);
seg_i->sum_blk->journal.info.kbytes_written = cpu_to_le64(kbytes_written);
if (__remain_node_summaries(cpc->reason)) {
write_node_summaries(sbi, start_blk);

39
fs/f2fs/f2fs.h
View File

@ -183,37 +183,37 @@ struct fsync_inode_entry {
block_t last_inode; /* block address locating the last inode */
};
#define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats))
#define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits))
#define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats))
#define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits))
#define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne)
#define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid)
#define sit_in_journal(sum, i) (sum->sit_j.entries[i].se)
#define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno)
#define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne)
#define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid)
#define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se)
#define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno)
#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum))
#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum))
#define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
#define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i)
static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
{
int before = nats_in_cursum(rs);
rs->n_nats = cpu_to_le16(before + i);
int before = nats_in_cursum(journal);
journal->n_nats = cpu_to_le16(before + i);
return before;
}
static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i)
static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
{
int before = sits_in_cursum(rs);
rs->n_sits = cpu_to_le16(before + i);
int before = sits_in_cursum(journal);
journal->n_sits = cpu_to_le16(before + i);
return before;
}
static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
int type)
static inline bool __has_cursum_space(struct f2fs_journal *journal,
int size, int type)
{
if (type == NAT_JOURNAL)
return size <= MAX_NAT_JENTRIES(sum);
return size <= MAX_SIT_JENTRIES(sum);
return size <= MAX_NAT_JENTRIES(journal);
return size <= MAX_SIT_JENTRIES(journal);
}
/*
@ -1862,8 +1862,7 @@ void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool);
void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t);
void write_data_summaries(struct f2fs_sb_info *, block_t);
void write_node_summaries(struct f2fs_sb_info *, block_t);
int lookup_journal_in_cursum(struct f2fs_summary_block *,
int, unsigned int, int);
int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int);
void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *);
int build_segment_manager(struct f2fs_sb_info *);
void destroy_segment_manager(struct f2fs_sb_info *);

42
fs/f2fs/node.c
View File

@ -354,7 +354,7 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
nid_t start_nid = START_NID(nid);
struct f2fs_nat_block *nat_blk;
struct page *page = NULL;
@ -382,9 +382,9 @@ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni)
/* Check current segment summary */
mutex_lock(&curseg->curseg_mutex);
i = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 0);
i = lookup_journal_in_cursum(journal, NAT_JOURNAL, nid, 0);
if (i >= 0) {
ne = nat_in_journal(sum, i);
ne = nat_in_journal(journal, i);
node_info_from_raw_nat(ni, &ne);
}
mutex_unlock(&curseg->curseg_mutex);
@ -1613,7 +1613,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
int i = 0;
nid_t nid = nm_i->next_scan_nid;
@ -1646,9 +1646,11 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
/* find free nids from current sum_pages */
mutex_lock(&curseg->curseg_mutex);
for (i = 0; i < nats_in_cursum(sum); i++) {
block_t addr = le32_to_cpu(nat_in_journal(sum, i).block_addr);
nid = le32_to_cpu(nid_in_journal(sum, i));
for (i = 0; i < nats_in_cursum(journal); i++) {
block_t addr;
addr = le32_to_cpu(nat_in_journal(journal, i).block_addr);
nid = le32_to_cpu(nid_in_journal(journal, i));
if (addr == NULL_ADDR)
add_free_nid(sbi, nid, true);
else
@ -1918,16 +1920,16 @@ static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
int i;
mutex_lock(&curseg->curseg_mutex);
for (i = 0; i < nats_in_cursum(sum); i++) {
for (i = 0; i < nats_in_cursum(journal); i++) {
struct nat_entry *ne;
struct f2fs_nat_entry raw_ne;
nid_t nid = le32_to_cpu(nid_in_journal(sum, i));
nid_t nid = le32_to_cpu(nid_in_journal(journal, i));
raw_ne = nat_in_journal(sum, i);
raw_ne = nat_in_journal(journal, i);
ne = __lookup_nat_cache(nm_i, nid);
if (!ne) {
@ -1936,7 +1938,7 @@ static void remove_nats_in_journal(struct f2fs_sb_info *sbi)
}
__set_nat_cache_dirty(nm_i, ne);
}
update_nats_in_cursum(sum, -i);
update_nats_in_cursum(journal, -i);
mutex_unlock(&curseg->curseg_mutex);
}
@ -1962,7 +1964,7 @@ static void __flush_nat_entry_set(struct f2fs_sb_info *sbi,
struct nat_entry_set *set)
{
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK;
bool to_journal = true;
struct f2fs_nat_block *nat_blk;
@ -1974,7 +1976,7 @@ static void __flush_nat_entry_set(struct f2fs_sb_info *sbi,
* #1, flush nat entries to journal in current hot data summary block.
* #2, flush nat entries to nat page.
*/
if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL))
if (!__has_cursum_space(journal, set->entry_cnt, NAT_JOURNAL))
to_journal = false;
if (to_journal) {
@ -1995,11 +1997,11 @@ static void __flush_nat_entry_set(struct f2fs_sb_info *sbi,
continue;
if (to_journal) {
offset = lookup_journal_in_cursum(sum,
offset = lookup_journal_in_cursum(journal,
NAT_JOURNAL, nid, 1);
f2fs_bug_on(sbi, offset < 0);
raw_ne = &nat_in_journal(sum, offset);
nid_in_journal(sum, offset) = cpu_to_le32(nid);
raw_ne = &nat_in_journal(journal, offset);
nid_in_journal(journal, offset) = cpu_to_le32(nid);
} else {
raw_ne = &nat_blk->entries[nid - start_nid];
}
@ -2028,7 +2030,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
struct nat_entry_set *setvec[SETVEC_SIZE];
struct nat_entry_set *set, *tmp;
unsigned int found;
@ -2045,7 +2047,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
* entries, remove all entries from journal and merge them
* into nat entry set.
*/
if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL))
if (!__has_cursum_space(journal, nm_i->dirty_nat_cnt, NAT_JOURNAL))
remove_nats_in_journal(sbi);
while ((found = __gang_lookup_nat_set(nm_i,
@ -2054,7 +2056,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
set_idx = setvec[found - 1]->set + 1;
for (idx = 0; idx < found; idx++)
__adjust_nat_entry_set(setvec[idx], &sets,
MAX_NAT_JENTRIES(sum));
MAX_NAT_JENTRIES(journal));
}
/* flush dirty nats in nat entry set */

54
fs/f2fs/segment.c
View File

@ -1539,11 +1539,11 @@ static int read_compacted_summaries(struct f2fs_sb_info *sbi)
/* Step 1: restore nat cache */
seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
memcpy(&seg_i->sum_blk->n_nats, kaddr, SUM_JOURNAL_SIZE);
memcpy(&seg_i->sum_blk->journal.n_nats, kaddr, SUM_JOURNAL_SIZE);
/* Step 2: restore sit cache */
seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
memcpy(&seg_i->sum_blk->n_sits, kaddr + SUM_JOURNAL_SIZE,
memcpy(&seg_i->sum_blk->journal.n_sits, kaddr + SUM_JOURNAL_SIZE,
SUM_JOURNAL_SIZE);
offset = 2 * SUM_JOURNAL_SIZE;
@ -1695,12 +1695,12 @@ static void write_compacted_summaries(struct f2fs_sb_info *sbi, block_t blkaddr)
/* Step 1: write nat cache */
seg_i = CURSEG_I(sbi, CURSEG_HOT_DATA);
memcpy(kaddr, &seg_i->sum_blk->n_nats, SUM_JOURNAL_SIZE);
memcpy(kaddr, &seg_i->sum_blk->journal.n_nats, SUM_JOURNAL_SIZE);
written_size += SUM_JOURNAL_SIZE;
/* Step 2: write sit cache */
seg_i = CURSEG_I(sbi, CURSEG_COLD_DATA);
memcpy(kaddr + written_size, &seg_i->sum_blk->n_sits,
memcpy(kaddr + written_size, &seg_i->sum_blk->journal.n_sits,
SUM_JOURNAL_SIZE);
written_size += SUM_JOURNAL_SIZE;
@ -1768,24 +1768,24 @@ void write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk)
write_normal_summaries(sbi, start_blk, CURSEG_HOT_NODE);
}
int lookup_journal_in_cursum(struct f2fs_summary_block *sum, int type,
int lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
unsigned int val, int alloc)
{
int i;
if (type == NAT_JOURNAL) {
for (i = 0; i < nats_in_cursum(sum); i++) {
if (le32_to_cpu(nid_in_journal(sum, i)) == val)
for (i = 0; i < nats_in_cursum(journal); i++) {
if (le32_to_cpu(nid_in_journal(journal, i)) == val)
return i;
}
if (alloc && __has_cursum_space(sum, 1, NAT_JOURNAL))
return update_nats_in_cursum(sum, 1);
if (alloc && __has_cursum_space(journal, 1, NAT_JOURNAL))
return update_nats_in_cursum(journal, 1);
} else if (type == SIT_JOURNAL) {
for (i = 0; i < sits_in_cursum(sum); i++)
if (le32_to_cpu(segno_in_journal(sum, i)) == val)
for (i = 0; i < sits_in_cursum(journal); i++)
if (le32_to_cpu(segno_in_journal(journal, i)) == val)
return i;
if (alloc && __has_cursum_space(sum, 1, SIT_JOURNAL))
return update_sits_in_cursum(sum, 1);
if (alloc && __has_cursum_space(journal, 1, SIT_JOURNAL))
return update_sits_in_cursum(journal, 1);
}
return -1;
}
@ -1889,20 +1889,20 @@ static void add_sits_in_set(struct f2fs_sb_info *sbi)
static void remove_sits_in_journal(struct f2fs_sb_info *sbi)
{
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
int i;
for (i = sits_in_cursum(sum) - 1; i >= 0; i--) {
for (i = 0; i < sits_in_cursum(journal); i++) {
unsigned int segno;
bool dirtied;
segno = le32_to_cpu(segno_in_journal(sum, i));
segno = le32_to_cpu(segno_in_journal(journal, i));
dirtied = __mark_sit_entry_dirty(sbi, segno);
if (!dirtied)
add_sit_entry(segno, &SM_I(sbi)->sit_entry_set);
}
update_sits_in_cursum(sum, -sits_in_cursum(sum));
update_sits_in_cursum(journal, -i);
}
/*
@ -1914,7 +1914,7 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
struct sit_info *sit_i = SIT_I(sbi);
unsigned long *bitmap = sit_i->dirty_sentries_bitmap;
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
struct sit_entry_set *ses, *tmp;
struct list_head *head = &SM_I(sbi)->sit_entry_set;
bool to_journal = true;
@ -1937,7 +1937,7 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
* entries, remove all entries from journal and add and account
* them in sit entry set.
*/
if (!__has_cursum_space(sum, sit_i->dirty_sentries, SIT_JOURNAL))
if (!__has_cursum_space(journal, sit_i->dirty_sentries, SIT_JOURNAL))
remove_sits_in_journal(sbi);
/*
@ -1954,7 +1954,7 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
unsigned int segno = start_segno;
if (to_journal &&
!__has_cursum_space(sum, ses->entry_cnt, SIT_JOURNAL))
!__has_cursum_space(journal, ses->entry_cnt, SIT_JOURNAL))
to_journal = false;
if (!to_journal) {
@ -1975,13 +1975,13 @@ void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc)
}
if (to_journal) {
offset = lookup_journal_in_cursum(sum,
offset = lookup_journal_in_cursum(journal,
SIT_JOURNAL, segno, 1);
f2fs_bug_on(sbi, offset < 0);
segno_in_journal(sum, offset) =
segno_in_journal(journal, offset) =
cpu_to_le32(segno);
seg_info_to_raw_sit(se,
&sit_in_journal(sum, offset));
&sit_in_journal(journal, offset));
} else {
sit_offset = SIT_ENTRY_OFFSET(sit_i, segno);
seg_info_to_raw_sit(se,
@ -2150,7 +2150,7 @@ static void build_sit_entries(struct f2fs_sb_info *sbi)
{
struct sit_info *sit_i = SIT_I(sbi);
struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA);
struct f2fs_summary_block *sum = curseg->sum_blk;
struct f2fs_journal *journal = &curseg->sum_blk->journal;
int sit_blk_cnt = SIT_BLK_CNT(sbi);
unsigned int i, start, end;
unsigned int readed, start_blk = 0;
@ -2169,10 +2169,10 @@ static void build_sit_entries(struct f2fs_sb_info *sbi)
struct page *page;
mutex_lock(&curseg->curseg_mutex);
for (i = 0; i < sits_in_cursum(sum); i++) {
if (le32_to_cpu(segno_in_journal(sum, i))
for (i = 0; i < sits_in_cursum(journal); i++) {
if (le32_to_cpu(segno_in_journal(journal, i))
== start) {
sit = sit_in_journal(sum, i);
sit = sit_in_journal(journal, i);
mutex_unlock(&curseg->curseg_mutex);
goto got_it;
}

2
fs/f2fs/super.c
View File

@ -1414,7 +1414,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE);
if (__exist_node_summaries(sbi))
sbi->kbytes_written =
le64_to_cpu(seg_i->sum_blk->info.kbytes_written);
le64_to_cpu(seg_i->sum_blk->journal.info.kbytes_written);
build_gc_manager(sbi);

10
include/linux/f2fs_fs.h
View File

@ -398,9 +398,7 @@ struct f2fs_extra_info {
__u8 reserved[EXTRA_INFO_RESERVED];
} __packed;
/* 4KB-sized summary block structure */
struct f2fs_summary_block {
struct f2fs_summary entries[ENTRIES_IN_SUM];
struct f2fs_journal {
union {
__le16 n_nats;
__le16 n_sits;
@ -411,6 +409,12 @@ struct f2fs_summary_block {
struct sit_journal sit_j;
struct f2fs_extra_info info;
};
} __packed;
/* 4KB-sized summary block structure */
struct f2fs_summary_block {
struct f2fs_summary entries[ENTRIES_IN_SUM];
struct f2fs_journal journal;
struct summary_footer footer;
} __packed;