mkfs.f2fs: refactor format flow for cleanup

During formatting device, node/data block and filesystem metatdata related
to same inode were updated in separated functions, e.g. for root inode:
- f2fs_write_root_inode() updates root inode's block
- f2fs_write_check_point_pack updates its nat/sit journal, summary block

Result in:
- there are some redundant codes in between f2fs_write_check_point_pack()
and functions in f2fs_create_root_dir().
- readability is bad due to filesystem meta and data/node updates in
separated places.
- bad scalability if we want to add more default inode.

So that, this patch introduces below functions:
- update_sit_journal
- update_nat_jounral
- update_summary_entry

Then use them to update inode related metadata into cache in below
functions:
- f2fs_write_root_inode
- f2fs_add_default_dentry_root
- f2fs_write_qf_inode
- f2fs_write_default_quota
- f2fs_write_lpf_inode
- f2fs_write_lpf_inode

Finally, f2fs_write_check_point_pack() can write back cached metadata
into CP area directly.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

2 files changed, 336 insertions, 346 deletions

diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
index 05d27ba..e441749 100644
--- a/include/f2fs_fs.h
+++ b/include/f2fs_fs.h
@@ -494,119 +494,6 @@ typedef struct {
 #define ALIGN_DOWN(addrs, size)	(((addrs) / (size)) * (size))
 #define ALIGN_UP(addrs, size)	ALIGN_DOWN(((addrs) + (size) - 1), (size))
 
-struct f2fs_configuration {
-	uint32_t conf_reserved_sections;
-	uint32_t reserved_segments;
-	uint32_t new_reserved_segments;
-	int sparse_mode;
-	int zoned_mode;
-	int zoned_model;
-	size_t zone_blocks;
-	double overprovision;
-	double new_overprovision;
-	uint32_t cur_seg[6];
-	uint32_t segs_per_sec;
-	uint32_t secs_per_zone;
-	uint32_t segs_per_zone;
-	uint32_t start_sector;
-	uint32_t total_segments;
-	uint32_t sector_size;
-	uint64_t device_size;
-	uint64_t total_sectors;
-	uint64_t wanted_total_sectors;
-	uint64_t wanted_sector_size;
-	uint64_t target_sectors;
-	uint32_t sectors_per_blk;
-	uint32_t blks_per_seg;
-	__u8 init_version[VERSION_LEN + 1];
-	__u8 sb_version[VERSION_LEN + 1];
-	__u8 version[VERSION_LEN + 1];
-	char *vol_label;
-	char *vol_uuid;
-	uint16_t s_encoding;
-	uint16_t s_encoding_flags;
-	int heap;
-	int32_t kd;
-	int32_t dump_fd;
-	struct device_info devices[MAX_DEVICES];
-	int ndevs;
-	char *extension_list[2];
-	const char *rootdev_name;
-	int dbg_lv;
-	int show_dentry;
-	int trim;
-	int trimmed;
-	int func;
-	void *private;
-	int dry_run;
-	int no_kernel_check;
-	int fix_on;
-	int force;
-	int defset;
-	int bug_on;
-	int force_stop;
-	int abnormal_stop;
-	int fs_errors;
-	int bug_nat_bits;
-	bool quota_fixed;
-	int alloc_failed;
-	int auto_fix;
-	int layout;
-	int show_file_map;
-	u64 show_file_map_max_offset;
-	int quota_fix;
-	int preen_mode;
-	int ro;
-	int preserve_limits;		/* preserve quota limits */
-	int large_nat_bitmap;
-	int fix_chksum;			/* fix old cp.chksum position */
-	__le32 feature;			/* defined features */
-	unsigned int quota_bits;	/* quota bits */
-	time_t fixed_time;
-
-	/* mkfs parameters */
-	int fake_seed;
-	uint32_t next_free_nid;
-	uint32_t quota_inum;
-	uint32_t quota_dnum;
-	uint32_t lpf_inum;
-	uint32_t lpf_dnum;
-	uint32_t lpf_ino;
-	uint32_t root_uid;
-	uint32_t root_gid;
-
-	/* defragmentation parameters */
-	int defrag_shrink;
-	uint64_t defrag_start;
-	uint64_t defrag_len;
-	uint64_t defrag_target;
-
-	/* sload parameters */
-	char *from_dir;
-	char *mount_point;
-	char *target_out_dir;
-	char *fs_config_file;
-#ifdef HAVE_LIBSELINUX
-	struct selinux_opt seopt_file[8];
-	int nr_opt;
-#endif
-	int preserve_perms;
-
-	/* resize parameters */
-	int safe_resize;
-
-	/* precomputed fs UUID checksum for seeding other checksums */
-	uint32_t chksum_seed;
-
-	/* cache parameters */
-	dev_cache_config_t cache_config;
-
-	/* compression support for sload.f2fs */
-	compress_config_t compress;
-
-	block_t curseg_offset[6];
-};
-
 #ifdef CONFIG_64BIT
 #define BITS_PER_LONG	64
 #else
@@ -721,6 +608,12 @@ enum {
 	NO_CHECK_TYPE
 };
 
+enum {
+	CURSEG_RO_HOT_DATA,
+	CURSEG_RO_HOT_NODE,
+	NR_RO_CURSEG_TYPE,
+};
+
 #define F2FS_MIN_SEGMENTS	9 /* SB + 2 (CP + SIT + NAT) + SSA + MAIN */
 
 /*
@@ -749,7 +642,7 @@ enum {
 #define F2FS_META_INO(sbi)	(sbi->meta_ino_num)
 
 #define F2FS_MAX_QUOTAS		3
-#define QUOTA_DATA(i)		(2)
+#define QUOTA_DATA		2
 #define QUOTA_INO(sb,t)	(le32_to_cpu((sb)->qf_ino[t]))
 
 /*
@@ -1471,6 +1364,120 @@ enum {
 	SSR
 };
 
+#define MAX_CACHE_SUMS			8
+
+struct f2fs_configuration {
+	uint32_t conf_reserved_sections;
+	uint32_t reserved_segments;
+	uint32_t new_reserved_segments;
+	int sparse_mode;
+	int zoned_mode;
+	int zoned_model;
+	size_t zone_blocks;
+	double overprovision;
+	double new_overprovision;
+	uint32_t cur_seg[NR_CURSEG_TYPE];
+	uint32_t segs_per_sec;
+	uint32_t secs_per_zone;
+	uint32_t segs_per_zone;
+	uint32_t start_sector;
+	uint32_t total_segments;
+	uint32_t sector_size;
+	uint64_t device_size;
+	uint64_t total_sectors;
+	uint64_t wanted_total_sectors;
+	uint64_t wanted_sector_size;
+	uint64_t target_sectors;
+	uint32_t sectors_per_blk;
+	uint32_t blks_per_seg;
+	__u8 init_version[VERSION_LEN + 1];
+	__u8 sb_version[VERSION_LEN + 1];
+	__u8 version[VERSION_LEN + 1];
+	char *vol_label;
+	char *vol_uuid;
+	uint16_t s_encoding;
+	uint16_t s_encoding_flags;
+	int heap;
+	int32_t kd;
+	int32_t dump_fd;
+	struct device_info devices[MAX_DEVICES];
+	int ndevs;
+	char *extension_list[2];
+	const char *rootdev_name;
+	int dbg_lv;
+	int show_dentry;
+	int trim;
+	int trimmed;
+	int func;
+	void *private;
+	int dry_run;
+	int no_kernel_check;
+	int fix_on;
+	int force;
+	int defset;
+	int bug_on;
+	int force_stop;
+	int abnormal_stop;
+	int fs_errors;
+	int bug_nat_bits;
+	bool quota_fixed;
+	int alloc_failed;
+	int auto_fix;
+	int layout;
+	int show_file_map;
+	u64 show_file_map_max_offset;
+	int quota_fix;
+	int preen_mode;
+	int ro;
+	int preserve_limits;		/* preserve quota limits */
+	int large_nat_bitmap;
+	int fix_chksum;			/* fix old cp.chksum position */
+	__le32 feature;			/* defined features */
+	unsigned int quota_bits;	/* quota bits */
+	time_t fixed_time;
+
+	/* mkfs parameters */
+	int fake_seed;
+	uint32_t next_free_nid;
+	uint32_t lpf_ino;
+	uint32_t root_uid;
+	uint32_t root_gid;
+
+	/* defragmentation parameters */
+	int defrag_shrink;
+	uint64_t defrag_start;
+	uint64_t defrag_len;
+	uint64_t defrag_target;
+
+	/* sload parameters */
+	char *from_dir;
+	char *mount_point;
+	char *target_out_dir;
+	char *fs_config_file;
+#ifdef HAVE_LIBSELINUX
+	struct selinux_opt seopt_file[8];
+	int nr_opt;
+#endif
+	int preserve_perms;
+
+	/* resize parameters */
+	int safe_resize;
+
+	/* precomputed fs UUID checksum for seeding other checksums */
+	uint32_t chksum_seed;
+
+	/* cache parameters */
+	dev_cache_config_t cache_config;
+
+	/* compression support for sload.f2fs */
+	compress_config_t compress;
+
+	block_t curseg_offset[NR_CURSEG_TYPE];
+	struct f2fs_journal sit_jnl;
+	struct f2fs_journal nat_jnl;
+	struct f2fs_summary sum[NR_CURSEG_TYPE][MAX_CACHE_SUMS];
+};
+
 extern int utf8_to_utf16(char *, const char *, size_t, size_t);
 extern int utf16_to_utf8(char *, const char *, size_t, size_t);
 extern int log_base_2(uint32_t);
diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 754dead..0f81a99 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -14,6 +14,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <f2fs_fs.h>
+#include <assert.h>
 
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
@@ -687,7 +688,7 @@ static int f2fs_init_nat_area(void)
 
 static int f2fs_write_check_point_pack(void)
 {
-	struct f2fs_summary_block *sum = NULL;
+	struct f2fs_summary_block *sum;
 	struct f2fs_journal *journal;
 	uint32_t blk_size_bytes;
 	uint32_t nat_bits_bytes, nat_bits_blocks;
@@ -698,8 +699,7 @@ static int f2fs_write_check_point_pack(void)
 	char *cp_payload = NULL;
 	char *sum_compact, *sum_compact_p;
 	struct f2fs_summary *sum_entry;
-	enum quota_type qtype;
-	int off;
+	unsigned short vblocks;
 	int ret = -1;
 
 	cp = calloc(F2FS_BLKSIZE, 1);
@@ -750,10 +750,10 @@ static int f2fs_write_check_point_pack(void)
 		set_cp(cur_data_segno[i], 0xffffffff);
 	}
 
-	set_cp(cur_node_blkoff[0], 1 + c.quota_inum + c.lpf_inum);
-	set_cp(cur_data_blkoff[0], 1 + c.quota_dnum + c.lpf_dnum);
-	set_cp(valid_block_count, 2 + c.quota_inum + c.quota_dnum +
-			c.lpf_inum + c.lpf_dnum);
+	set_cp(cur_node_blkoff[0], c.curseg_offset[CURSEG_HOT_NODE]);
+	set_cp(cur_data_blkoff[0], c.curseg_offset[CURSEG_HOT_DATA]);
+	set_cp(valid_block_count, c.curseg_offset[CURSEG_HOT_NODE] +
+					c.curseg_offset[CURSEG_HOT_DATA]);
 	set_cp(rsvd_segment_count, c.reserved_segments);
 
 	/*
@@ -824,8 +824,8 @@ static int f2fs_write_check_point_pack(void)
 
 	set_cp(ckpt_flags, flags);
 	set_cp(cp_pack_start_sum, 1 + get_sb(cp_payload));
-	set_cp(valid_node_count, 1 + c.quota_inum + c.lpf_inum);
-	set_cp(valid_inode_count, 1 + c.quota_inum + c.lpf_inum);
+	set_cp(valid_node_count, c.curseg_offset[CURSEG_HOT_NODE]);
+	set_cp(valid_inode_count, c.curseg_offset[CURSEG_HOT_NODE]);
 	set_cp(next_free_nid, c.next_free_nid);
 	set_cp(sit_ver_bitmap_bytesize, ((get_sb(segment_count_sit) / 2) <<
 			get_sb(log_blocks_per_seg)) / 8);
@@ -883,126 +883,58 @@ static int f2fs_write_check_point_pack(void)
 	 * | cold data summary |
 	 * +-------------------+
 	*/
-	memset(sum, 0, sizeof(struct f2fs_summary_block));
-	SET_SUM_TYPE((&sum->footer), SUM_TYPE_DATA);
-
-	journal = &sum->journal;
-	journal->n_nats = cpu_to_le16(1 + c.quota_inum + c.lpf_inum);
-	journal->nat_j.entries[0].nid = sb->root_ino;
-	journal->nat_j.entries[0].ne.version = 0;
-	journal->nat_j.entries[0].ne.ino = sb->root_ino;
-	journal->nat_j.entries[0].ne.block_addr = cpu_to_le32(
-			get_sb(main_blkaddr) +
-			get_cp(cur_node_segno[0]) * c.blks_per_seg);
-
-	for (qtype = 0, i = 1; qtype < F2FS_MAX_QUOTAS; qtype++) {
-		if (!((1 << qtype) & c.quota_bits))
-			continue;
-		journal->nat_j.entries[i].nid = sb->qf_ino[qtype];
-		journal->nat_j.entries[i].ne.version = 0;
-		journal->nat_j.entries[i].ne.ino = sb->qf_ino[qtype];
-		journal->nat_j.entries[i].ne.block_addr = cpu_to_le32(
-				get_sb(main_blkaddr) +
-				get_cp(cur_node_segno[0]) *
-				c.blks_per_seg + i);
-		i++;
-	}
-
-	if (c.lpf_inum) {
-		journal->nat_j.entries[i].nid = cpu_to_le32(c.lpf_ino);
-		journal->nat_j.entries[i].ne.version = 0;
-		journal->nat_j.entries[i].ne.ino = cpu_to_le32(c.lpf_ino);
-		journal->nat_j.entries[i].ne.block_addr = cpu_to_le32(
-				get_sb(main_blkaddr) +
-				get_cp(cur_node_segno[0]) *
-				c.blks_per_seg + i);
-	}
 
+	/* nat_sjournal */
+	journal = &c.nat_jnl;
 	memcpy(sum_compact_p, &journal->n_nats, SUM_JOURNAL_SIZE);
 	sum_compact_p += SUM_JOURNAL_SIZE;
 
-	memset(sum, 0, sizeof(struct f2fs_summary_block));
-
-	/* inode sit for root */
-	if (c.feature & cpu_to_le32(F2FS_FEATURE_RO))
-		journal->n_sits = cpu_to_le16(2);
-	else
-		journal->n_sits = cpu_to_le16(6);
-
-	journal->sit_j.entries[0].segno = cp->cur_node_segno[0];
-	journal->sit_j.entries[0].se.vblocks =
-				cpu_to_le16((CURSEG_HOT_NODE << 10) |
-						(1 + c.quota_inum + c.lpf_inum));
-	f2fs_set_bit(0, (char *)journal->sit_j.entries[0].se.valid_map);
-	for (i = 1; i <= c.quota_inum; i++)
-		f2fs_set_bit(i, (char *)journal->sit_j.entries[0].se.valid_map);
-	if (c.lpf_inum)
-		f2fs_set_bit(i, (char *)journal->sit_j.entries[0].se.valid_map);
+	/* sit_journal */
+	journal = &c.sit_jnl;
 
 	if (c.feature & cpu_to_le32(F2FS_FEATURE_RO)) {
-		/* data sit for root */
-		journal->sit_j.entries[1].segno = cp->cur_data_segno[0];
-		journal->sit_j.entries[1].se.vblocks =
-					cpu_to_le16((CURSEG_HOT_DATA << 10) |
-							(1 + c.quota_dnum + c.lpf_dnum));
-		f2fs_set_bit(0, (char *)journal->sit_j.entries[1].se.valid_map);
-		for (i = 1; i <= c.quota_dnum; i++)
-			f2fs_set_bit(i, (char *)journal->sit_j.entries[1].se.valid_map);
-		if (c.lpf_dnum)
-			f2fs_set_bit(i, (char *)journal->sit_j.entries[1].se.valid_map);
+		i = CURSEG_RO_HOT_DATA;
+		vblocks = le16_to_cpu(journal->sit_j.entries[i].se.vblocks);
+		journal->sit_j.entries[i].segno = cp->cur_data_segno[0];
+		journal->sit_j.entries[i].se.vblocks =
+				cpu_to_le16(vblocks | (CURSEG_HOT_DATA << 10));
+
+		i = CURSEG_RO_HOT_NODE;
+		vblocks = le16_to_cpu(journal->sit_j.entries[i].se.vblocks);
+		journal->sit_j.entries[i].segno = cp->cur_node_segno[0];
+		journal->sit_j.entries[i].se.vblocks |=
+				cpu_to_le16(vblocks | (CURSEG_HOT_NODE << 10));
+
+		journal->n_sits = cpu_to_le16(2);
 	} else {
-		journal->sit_j.entries[1].segno = cp->cur_node_segno[1];
-		journal->sit_j.entries[1].se.vblocks =
-					cpu_to_le16((CURSEG_WARM_NODE << 10));
-		journal->sit_j.entries[2].segno = cp->cur_node_segno[2];
-		journal->sit_j.entries[2].se.vblocks =
-					cpu_to_le16((CURSEG_COLD_NODE << 10));
-
-		/* data sit for root */
-		journal->sit_j.entries[3].segno = cp->cur_data_segno[0];
-		journal->sit_j.entries[3].se.vblocks =
-					cpu_to_le16((CURSEG_HOT_DATA << 10) |
-							(1 + c.quota_dnum + c.lpf_dnum));
-		f2fs_set_bit(0, (char *)journal->sit_j.entries[3].se.valid_map);
-		for (i = 1; i <= c.quota_dnum; i++)
-			f2fs_set_bit(i, (char *)journal->sit_j.entries[3].se.valid_map);
-		if (c.lpf_dnum)
-			f2fs_set_bit(i, (char *)journal->sit_j.entries[3].se.valid_map);
-
-		journal->sit_j.entries[4].segno = cp->cur_data_segno[1];
-		journal->sit_j.entries[4].se.vblocks =
-					cpu_to_le16((CURSEG_WARM_DATA << 10));
-		journal->sit_j.entries[5].segno = cp->cur_data_segno[2];
-		journal->sit_j.entries[5].se.vblocks =
-					cpu_to_le16((CURSEG_COLD_DATA << 10));
+		for (i = CURSEG_HOT_DATA; i < NR_CURSEG_TYPE; i++) {
+			if (i < NR_CURSEG_DATA_TYPE)
+				journal->sit_j.entries[i].segno =
+					cp->cur_data_segno[i];
+
+			else
+				journal->sit_j.entries[i].segno =
+					cp->cur_node_segno[i - NR_CURSEG_DATA_TYPE];
+
+			vblocks =
+				le16_to_cpu(journal->sit_j.entries[i].se.vblocks);
+			journal->sit_j.entries[i].se.vblocks =
+						cpu_to_le16(vblocks | (i << 10));
+		}
+
+		journal->n_sits = cpu_to_le16(6);
 	}
 
 	memcpy(sum_compact_p, &journal->n_sits, SUM_JOURNAL_SIZE);
 	sum_compact_p += SUM_JOURNAL_SIZE;
 
 	/* hot data summary */
-	sum_entry = (struct f2fs_summary *)sum_compact_p;
-	sum_entry->nid = sb->root_ino;
-	sum_entry->ofs_in_node = 0;
-
-	off = 1;
-	for (qtype = 0; qtype < F2FS_MAX_QUOTAS; qtype++) {
-		int j;
-
-		if (!((1 << qtype) & c.quota_bits))
-			continue;
-
-		for (j = 0; j < QUOTA_DATA(qtype); j++) {
-			(sum_entry + off + j)->nid = sb->qf_ino[qtype];
-			(sum_entry + off + j)->ofs_in_node = cpu_to_le16(j);
-		}
-		off += QUOTA_DATA(qtype);
-	}
+	memset(sum, 0, sizeof(struct f2fs_summary_block));
+	SET_SUM_TYPE((&sum->footer), SUM_TYPE_DATA);
 
-	if (c.lpf_dnum) {
-		(sum_entry + off)->nid = cpu_to_le32(c.lpf_ino);
-		(sum_entry + off)->ofs_in_node = 0;
-	}
+	sum_entry = (struct f2fs_summary *)sum_compact_p;
+	memcpy(sum_entry, c.sum[CURSEG_HOT_DATA],
+			sizeof(struct f2fs_summary) * MAX_CACHE_SUMS);
 
 	/* warm data summary, nothing to do */
 	/* cold data summary, nothing to do */
@@ -1018,21 +950,8 @@ static int f2fs_write_check_point_pack(void)
 	/* Prepare and write Segment summary for HOT_NODE */
 	memset(sum, 0, sizeof(struct f2fs_summary_block));
 	SET_SUM_TYPE((&sum->footer), SUM_TYPE_NODE);
-
-	sum->entries[0].nid = sb->root_ino;
-	sum->entries[0].ofs_in_node = 0;
-	for (qtype = i = 0; qtype < F2FS_MAX_QUOTAS; qtype++) {
-		if (!((1 << qtype) & c.quota_bits))
-			continue;
-		sum->entries[1 + i].nid = sb->qf_ino[qtype];
-		sum->entries[1 + i].ofs_in_node = 0;
-		i++;
-	}
-	if (c.lpf_inum) {
-		i++;
-		sum->entries[i].nid = cpu_to_le32(c.lpf_ino);
-		sum->entries[i].ofs_in_node = 0;
-	}
+	memcpy(sum->entries, c.sum[CURSEG_HOT_NODE],
+			sizeof(struct f2fs_summary) * MAX_CACHE_SUMS);
 
 	cp_seg_blk++;
 	DBG(1, "\tWriting Segment summary for HOT_NODE, at offset 0x%08"PRIx64"\n",
@@ -1198,7 +1117,8 @@ static int f2fs_discard_obsolete_dnode(void)
 	offset += c.cur_seg[CURSEG_WARM_NODE] * c.blks_per_seg;
 
 	last_inode_pos = start_inode_pos +
-		c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg + c.quota_inum + c.lpf_inum;
+		c.cur_seg[CURSEG_HOT_NODE] * c.blks_per_seg +
+		c.curseg_offset[CURSEG_COLD_NODE] - 1;
 
 	do {
 		if (offset < get_sb(main_blkaddr) || offset >= end_blkaddr)
@@ -1230,19 +1150,124 @@ static int f2fs_discard_obsolete_dnode(void)
 }
 #endif
 
-static block_t alloc_next_free_block(int curseg_type, int blkcnt)
+static block_t alloc_next_free_block(int curseg_type)
 {
 	block_t blkaddr;
 
 	blkaddr = get_sb(main_blkaddr) +
-		c.cur_seg[curseg_type] * c.blks_per_seg +
-		c.curseg_offset[curseg_type];
+			c.cur_seg[curseg_type] * c.blks_per_seg +
+			c.curseg_offset[curseg_type];
 
-	c.curseg_offset[curseg_type] += blkcnt;
+	c.curseg_offset[curseg_type]++;
 
 	return blkaddr;
 }
 
+void update_sit_journal(int curseg_type)
+{
+	struct f2fs_journal *sit_jnl = &c.sit_jnl;
+	unsigned short vblocks;
+	int idx = curseg_type;
+
+	if (c.feature & cpu_to_le32(F2FS_FEATURE_RO)) {
+		if (curseg_type < NR_CURSEG_DATA_TYPE)
+			idx = CURSEG_RO_HOT_DATA;
+		else
+			idx = CURSEG_RO_HOT_NODE;
+	}
+
+	f2fs_set_bit(c.curseg_offset[curseg_type] - 1,
+		(char *)sit_jnl->sit_j.entries[idx].se.valid_map);
+
+	vblocks = le16_to_cpu(sit_jnl->sit_j.entries[idx].se.vblocks);
+	sit_jnl->sit_j.entries[idx].se.vblocks = cpu_to_le16(vblocks + 1);
+}
+
+void update_nat_journal(nid_t nid, block_t blkaddr)
+{
+	struct f2fs_journal *nat_jnl = &c.nat_jnl;
+	unsigned short n_nats = le16_to_cpu(nat_jnl->n_nats);
+
+	nat_jnl->nat_j.entries[n_nats].nid = cpu_to_le32(nid);
+	nat_jnl->nat_j.entries[n_nats].ne.version = 0;
+	nat_jnl->nat_j.entries[n_nats].ne.ino = cpu_to_le32(nid);
+	nat_jnl->nat_j.entries[n_nats].ne.block_addr = cpu_to_le32(blkaddr);
+	nat_jnl->n_nats = cpu_to_le16(n_nats + 1);
+}
+
+void update_summary_entry(int curseg_type, nid_t nid,
+					unsigned short ofs_in_node)
+{
+	struct f2fs_summary *sum;
+	unsigned int curofs = c.curseg_offset[curseg_type] - 1;
+
+	assert(curofs < MAX_CACHE_SUMS);
+
+	sum = c.sum[curseg_type] + curofs;
+	sum->nid = cpu_to_le32(nid);
+	sum->ofs_in_node = cpu_to_le16(ofs_in_node);
+}
+
+static block_t f2fs_add_default_dentry_root(void)
+{
+	struct f2fs_dentry_block *dent_blk = NULL;
+	block_t data_blkaddr;
+
+	dent_blk = calloc(F2FS_BLKSIZE, 1);
+	if(dent_blk == NULL) {
+		MSG(1, "\tError: Calloc Failed for dent_blk!!!\n");
+		return 0;
+	}
+
+	dent_blk->dentry[0].hash_code = 0;
+	dent_blk->dentry[0].ino = sb->root_ino;
+	dent_blk->dentry[0].name_len = cpu_to_le16(1);
+	dent_blk->dentry[0].file_type = F2FS_FT_DIR;
+	memcpy(dent_blk->filename[0], ".", 1);
+
+	dent_blk->dentry[1].hash_code = 0;
+	dent_blk->dentry[1].ino = sb->root_ino;
+	dent_blk->dentry[1].name_len = cpu_to_le16(2);
+	dent_blk->dentry[1].file_type = F2FS_FT_DIR;
+	memcpy(dent_blk->filename[1], "..", 2);
+
+	/* bitmap for . and .. */
+	test_and_set_bit_le(0, dent_blk->dentry_bitmap);
+	test_and_set_bit_le(1, dent_blk->dentry_bitmap);
+
+	if (c.lpf_ino) {
+		int len = strlen(LPF);
+		f2fs_hash_t hash = f2fs_dentry_hash(0, 0, (unsigned char *)LPF, len);
+
+		dent_blk->dentry[2].hash_code = cpu_to_le32(hash);
+		dent_blk->dentry[2].ino = cpu_to_le32(c.lpf_ino);
+		dent_blk->dentry[2].name_len = cpu_to_le16(len);
+		dent_blk->dentry[2].file_type = F2FS_FT_DIR;
+		memcpy(dent_blk->filename[2], LPF, F2FS_SLOT_LEN);
+
+		memcpy(dent_blk->filename[3], &LPF[F2FS_SLOT_LEN],
+				len - F2FS_SLOT_LEN);
+
+		test_and_set_bit_le(2, dent_blk->dentry_bitmap);
+		test_and_set_bit_le(3, dent_blk->dentry_bitmap);
+	}
+
+	data_blkaddr = alloc_next_free_block(CURSEG_HOT_DATA);
+
+	DBG(1, "\tWriting default dentry root, at offset 0x%x\n", data_blkaddr);
+	if (dev_write_block(dent_blk, data_blkaddr)) {
+		MSG(1, "\tError: While writing the dentry_blk to disk!!!\n");
+		free(dent_blk);
+		return 0;
+	}
+
+	update_sit_journal(CURSEG_HOT_DATA);
+	update_summary_entry(CURSEG_HOT_DATA, le32_to_cpu(sb->root_ino), 0);
+
+	free(dent_blk);
+	return data_blkaddr;
+}
+
 static int f2fs_write_root_inode(void)
 {
 	struct f2fs_node *raw_node = NULL;
@@ -1261,11 +1286,17 @@ static int f2fs_write_root_inode(void)
 	if (c.lpf_ino)
 		raw_node->i.i_links = cpu_to_le32(3);
 
-	data_blkaddr = alloc_next_free_block(CURSEG_HOT_DATA, 1);
+	data_blkaddr = f2fs_add_default_dentry_root();
+	if (data_blkaddr == 0) {
+		MSG(1, "\tError: Failed to add default dentries for root!!!\n");
+		free(raw_node);
+		return -1;
+	}
+
 	raw_node->i.i_addr[get_extra_isize(raw_node)] =
 				cpu_to_le32(data_blkaddr);
 
-	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE, 1);
+	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE);
 	raw_node->footer.next_blkaddr = cpu_to_le32(node_blkaddr + 1);
 
 	DBG(1, "\tWriting root inode (hot node), offset 0x%x\n", node_blkaddr);
@@ -1275,22 +1306,27 @@ static int f2fs_write_root_inode(void)
 		return -1;
 	}
 
+	update_nat_journal(le32_to_cpu(sb->root_ino), node_blkaddr);
+	update_sit_journal(CURSEG_HOT_NODE);
+	update_summary_entry(CURSEG_HOT_NODE, le32_to_cpu(sb->root_ino), 0);
+
 	free(raw_node);
 	return 0;
 }
 
-static int f2fs_write_default_quota(int qtype, unsigned int blkaddr,
-						__le32 raw_id)
+static int f2fs_write_default_quota(int qtype, __le32 raw_id)
 {
 	char *filebuf = calloc(F2FS_BLKSIZE, 2);
 	int file_magics[] = INITQMAGICS;
 	struct v2_disk_dqheader ddqheader;
 	struct v2_disk_dqinfo ddqinfo;
 	struct v2r1_disk_dqblk dqblk;
+	block_t blkaddr;
+	int i;
 
 	if (filebuf == NULL) {
 		MSG(1, "\tError: Calloc Failed for filebuf!!!\n");
-		return -1;
+		return 0;
 	}
 
 	/* Write basic quota header */
@@ -1337,17 +1373,25 @@ static int f2fs_write_default_quota(int qtype, unsigned int blkaddr,
 	memcpy(filebuf + 5136, &dqblk, sizeof(struct v2r1_disk_dqblk));
 
 	/* Write two blocks */
-	if (dev_write_block(filebuf, blkaddr) ||
-	    dev_write_block(filebuf + F2FS_BLKSIZE, blkaddr + 1)) {
-		MSG(1, "\tError: While writing the quota_blk to disk!!!\n");
-		free(filebuf);
-		return -1;
+	for (i = 0; i < QUOTA_DATA; i++) {
+		blkaddr = alloc_next_free_block(CURSEG_HOT_DATA);
+
+		if (dev_write_block(filebuf + i * F2FS_BLKSIZE, blkaddr)) {
+			MSG(1, "\tError: While writing the quota_blk to disk!!!\n");
+			free(filebuf);
+			return 0;
+		}
+
+		update_sit_journal(CURSEG_HOT_DATA);
+		update_summary_entry(CURSEG_HOT_DATA,
+					le32_to_cpu(sb->qf_ino[qtype]), i);
 	}
+
 	DBG(1, "\tWriting quota data, at offset %08x, %08x\n",
-					blkaddr, blkaddr + 1);
+					blkaddr - 1, blkaddr);
+
 	free(filebuf);
-	c.quota_dnum += QUOTA_DATA(qtype);
-	return 0;
+	return blkaddr - 1;
 }
 
 static int f2fs_write_qf_inode(int qtype)
@@ -1367,14 +1411,12 @@ static int f2fs_write_qf_inode(int qtype)
 			le32_to_cpu(sb->qf_ino[qtype]), mkfs_time, 0x8180);
 
 	raw_node->i.i_size = cpu_to_le64(1024 * 6);
-	raw_node->i.i_blocks = cpu_to_le64(1 + QUOTA_DATA(qtype));
+	raw_node->i.i_blocks = cpu_to_le64(1 + QUOTA_DATA);
 	raw_node->i.i_flags = F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
 
-	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE, 1);
+	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE);
 	raw_node->footer.next_blkaddr = cpu_to_le32(node_blkaddr + 1);
 
-	data_blkaddr = alloc_next_free_block(CURSEG_HOT_DATA, QUOTA_DATA(i));
-
 	if (qtype == 0)
 		raw_id = raw_node->i.i_uid;
 	else if (qtype == 1)
@@ -1385,12 +1427,13 @@ static int f2fs_write_qf_inode(int qtype)
 		ASSERT(0);
 
 	/* write two blocks */
-	if (f2fs_write_default_quota(qtype, data_blkaddr, raw_id)) {
+	data_blkaddr = f2fs_write_default_quota(qtype, raw_id);
+	if (data_blkaddr == 0) {
 		free(raw_node);
 		return -1;
 	}
 
-	for (i = 0; i < QUOTA_DATA(qtype); i++)
+	for (i = 0; i < QUOTA_DATA; i++)
 		raw_node->i.i_addr[get_extra_isize(raw_node) + i] =
 					cpu_to_le32(data_blkaddr + i);
 
@@ -1401,8 +1444,11 @@ static int f2fs_write_qf_inode(int qtype)
 		return -1;
 	}
 
+	update_nat_journal(le32_to_cpu(sb->qf_ino[qtype]), node_blkaddr);
+	update_sit_journal(CURSEG_HOT_NODE);
+	update_summary_entry(CURSEG_HOT_NODE, le32_to_cpu(sb->qf_ino[qtype]), 0);
+
 	free(raw_node);
-	c.quota_inum++;
 	return 0;
 }
 
@@ -1442,7 +1488,7 @@ static int f2fs_update_nat_default(void)
 static block_t f2fs_add_default_dentry_lpf(void)
 {
 	struct f2fs_dentry_block *dent_blk;
-	uint64_t data_blk_offset;
+	block_t data_blkaddr;
 
 	dent_blk = calloc(F2FS_BLKSIZE, 1);
 	if (dent_blk == NULL) {
@@ -1465,21 +1511,21 @@ static block_t f2fs_add_default_dentry_lpf(void)
 	test_and_set_bit_le(0, dent_blk->dentry_bitmap);
 	test_and_set_bit_le(1, dent_blk->dentry_bitmap);
 
-	data_blk_offset = get_sb(main_blkaddr);
-	data_blk_offset += c.cur_seg[CURSEG_HOT_DATA] * c.blks_per_seg +
-		1 + c.quota_dnum;
+	data_blkaddr = alloc_next_free_block(CURSEG_HOT_DATA);
 
-	DBG(1, "\tWriting default dentry lost+found, at offset 0x%08"PRIx64"\n",
-			data_blk_offset);
-	if (dev_write_block(dent_blk, data_blk_offset)) {
+	DBG(1, "\tWriting default dentry lost+found, at offset 0x%x\n",
+							data_blkaddr);
+	if (dev_write_block(dent_blk, data_blkaddr)) {
 		MSG(1, "\tError While writing the dentry_blk to disk!!!\n");
 		free(dent_blk);
 		return 0;
 	}
 
+	update_sit_journal(CURSEG_HOT_DATA);
+	update_summary_entry(CURSEG_HOT_DATA, c.lpf_ino, 0);
+
 	free(dent_blk);
-	c.lpf_dnum++;
-	return data_blk_offset;
+	return data_blkaddr;
 }
 
 static int f2fs_write_lpf_inode(void)
@@ -1503,7 +1549,7 @@ static int f2fs_write_lpf_inode(void)
 	raw_node->i.i_namelen = le32_to_cpu(strlen(LPF));
 	memcpy(raw_node->i.i_name, LPF, strlen(LPF));
 
-	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE, 1);
+	node_blkaddr = alloc_next_free_block(CURSEG_HOT_NODE);
 	raw_node->footer.next_blkaddr = cpu_to_le32(node_blkaddr + 1);
 
 	data_blkaddr = f2fs_add_default_dentry_lpf();
@@ -1522,72 +1568,15 @@ static int f2fs_write_lpf_inode(void)
 		goto exit;
 	}
 
-	c.lpf_inum++;
+	update_nat_journal(c.lpf_ino, node_blkaddr);
+	update_sit_journal(CURSEG_HOT_NODE);
+	update_summary_entry(CURSEG_HOT_NODE, c.lpf_ino, 0);
+
 exit:
 	free(raw_node);
 	return err;
 }
 
-static int f2fs_add_default_dentry_root(void)
-{
-	struct f2fs_dentry_block *dent_blk = NULL;
-	uint64_t data_blk_offset = 0;
-
-	dent_blk = calloc(F2FS_BLKSIZE, 1);
-	if(dent_blk == NULL) {
-		MSG(1, "\tError: Calloc Failed for dent_blk!!!\n");
-		return -1;
-	}
-
-	dent_blk->dentry[0].hash_code = 0;
-	dent_blk->dentry[0].ino = sb->root_ino;
-	dent_blk->dentry[0].name_len = cpu_to_le16(1);
-	dent_blk->dentry[0].file_type = F2FS_FT_DIR;
-	memcpy(dent_blk->filename[0], ".", 1);
-
-	dent_blk->dentry[1].hash_code = 0;
-	dent_blk->dentry[1].ino = sb->root_ino;
-	dent_blk->dentry[1].name_len = cpu_to_le16(2);
-	dent_blk->dentry[1].file_type = F2FS_FT_DIR;
-	memcpy(dent_blk->filename[1], "..", 2);
-
-	/* bitmap for . and .. */
-	test_and_set_bit_le(0, dent_blk->dentry_bitmap);
-	test_and_set_bit_le(1, dent_blk->dentry_bitmap);
-
-	if (c.lpf_ino) {
-		int len = strlen(LPF);
-		f2fs_hash_t hash = f2fs_dentry_hash(0, 0, (unsigned char *)LPF, len);
-
-		dent_blk->dentry[2].hash_code = cpu_to_le32(hash);
-		dent_blk->dentry[2].ino = cpu_to_le32(c.lpf_ino);
-		dent_blk->dentry[2].name_len = cpu_to_le16(len);
-		dent_blk->dentry[2].file_type = F2FS_FT_DIR;
-		memcpy(dent_blk->filename[2], LPF, F2FS_SLOT_LEN);
-
-		memcpy(dent_blk->filename[3], &LPF[F2FS_SLOT_LEN],
-				len - F2FS_SLOT_LEN);
-
-		test_and_set_bit_le(2, dent_blk->dentry_bitmap);
-		test_and_set_bit_le(3, dent_blk->dentry_bitmap);
-	}
-
-	data_blk_offset = get_sb(main_blkaddr);
-	data_blk_offset += c.cur_seg[CURSEG_HOT_DATA] *
-				c.blks_per_seg;
-
-	DBG(1, "\tWriting default dentry root, at offset 0x%08"PRIx64"\n",
-				data_blk_offset);
-	if (dev_write_block(dent_blk, data_blk_offset)) {
-		MSG(1, "\tError: While writing the dentry_blk to disk!!!\n");
-		free(dent_blk);
-		return -1;
-	}
-
-	free(dent_blk);
-	return 0;
-}
-
 static int f2fs_create_root_dir(void)
 {
 	enum quota_type qtype;
@@ -1630,12 +1619,6 @@ static int f2fs_create_root_dir(void)
 		MSG(1, "\tError: Failed to update NAT for root!!!\n");
 		goto exit;
 	}
-
-	err = f2fs_add_default_dentry_root();
-	if (err < 0) {
-		MSG(1, "\tError: Failed to add default dentries for root!!!\n");
-		goto exit;
-	}
 exit:
 	if (err)
 		MSG(1, "\tError: Could not create the root directory!!!\n");