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Diffstat (limited to 'mkfs/f2fs_format.c')
-rw-r--r--mkfs/f2fs_format.c119
1 files changed, 84 insertions, 35 deletions
diff --git a/mkfs/f2fs_format.c b/mkfs/f2fs_format.c
index 3f1fa32..3565bd3 100644
--- a/mkfs/f2fs_format.c
+++ b/mkfs/f2fs_format.c
@@ -212,7 +212,7 @@ static int f2fs_prepare_super_block(void)
u_int64_t total_meta_zones, total_meta_segments;
u_int32_t sit_bitmap_size, max_sit_bitmap_size;
u_int32_t max_nat_bitmap_size, max_nat_segments;
- u_int32_t total_zones;
+ u_int32_t total_zones, avail_zones;
enum quota_type qtype;
int i;
@@ -250,6 +250,9 @@ static int f2fs_prepare_super_block(void)
zone_size_bytes * zone_size_bytes -
(u_int64_t) c.start_sector * DEFAULT_SECTOR_SIZE;
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO))
+ zone_align_start_offset = 8192;
+
if (c.start_sector % DEFAULT_SECTORS_PER_BLOCK) {
MSG(1, "\t%s: Align start sector number to the page unit\n",
c.zoned_mode ? "FAIL" : "WARN");
@@ -400,7 +403,10 @@ static int f2fs_prepare_super_block(void)
get_sb(segment_count_nat))) *
c.blks_per_seg;
- blocks_for_ssa = total_valid_blks_available /
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO))
+ blocks_for_ssa = 0;
+ else
+ blocks_for_ssa = total_valid_blks_available /
c.blks_per_seg + 1;
set_sb(segment_count_ssa, SEG_ALIGN(blocks_for_ssa));
@@ -457,7 +463,13 @@ static int f2fs_prepare_super_block(void)
(2 * (100 / c.overprovision + 1) + NR_CURSEG_TYPE) *
round_up(f2fs_get_usable_segments(sb), get_sb(section_count));
- if (c.overprovision == 0 || c.total_segments < F2FS_MIN_SEGMENTS ||
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO)) {
+ c.overprovision = 0;
+ c.reserved_segments = 0;
+ }
+ if ((!(c.feature & cpu_to_le32(F2FS_FEATURE_RO)) &&
+ c.overprovision == 0) ||
+ c.total_segments < F2FS_MIN_SEGMENTS ||
(c.devices[0].total_sectors *
c.sector_size < zone_align_start_offset) ||
(get_sb(segment_count_main) - NR_CURSEG_TYPE) <
@@ -503,13 +515,25 @@ static int f2fs_prepare_super_block(void)
if (c.feature & cpu_to_le32(F2FS_FEATURE_LOST_FOUND))
c.lpf_ino = c.next_free_nid++;
- if (total_zones <= 6) {
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO))
+ avail_zones = 2;
+ else
+ avail_zones = 6;
+
+ if (total_zones <= avail_zones) {
MSG(1, "\tError: %d zones: Need more zones "
"by shrinking zone size\n", total_zones);
return -1;
}
- if (c.heap) {
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO)) {
+ c.cur_seg[CURSEG_HOT_NODE] = 0;
+ c.cur_seg[CURSEG_WARM_NODE] = 0;
+ c.cur_seg[CURSEG_COLD_NODE] = 0;
+ c.cur_seg[CURSEG_HOT_DATA] = 1;
+ c.cur_seg[CURSEG_COLD_DATA] = 0;
+ c.cur_seg[CURSEG_WARM_DATA] = 0;
+ } else if (c.heap) {
c.cur_seg[CURSEG_HOT_NODE] =
last_section(last_zone(total_zones));
c.cur_seg[CURSEG_WARM_NODE] = prev_zone(CURSEG_HOT_NODE);
@@ -538,7 +562,8 @@ static int f2fs_prepare_super_block(void)
}
/* if there is redundancy, reassign it */
- verify_cur_segs();
+ if (!(c.feature & cpu_to_le32(F2FS_FEATURE_RO)))
+ verify_cur_segs();
cure_extension_list();
@@ -723,7 +748,7 @@ static int f2fs_write_check_point_pack(void)
if (f2fs_get_usable_segments(sb) <= get_cp(overprov_segment_count)) {
MSG(0, "\tError: Not enough segments to create F2FS Volume\n");
- goto free_nat_bits;
+ goto free_cp_payload;
}
MSG(0, "Info: Overprovision ratio = %.3lf%%\n", c.overprovision);
MSG(0, "Info: Overprovision segments = %u (GC reserved = %u)\n",
@@ -731,9 +756,15 @@ static int f2fs_write_check_point_pack(void)
c.reserved_segments);
/* main segments - reserved segments - (node + data segments) */
- set_cp(free_segment_count, f2fs_get_usable_segments(sb) - 6);
- set_cp(user_block_count, ((get_cp(free_segment_count) + 6 -
+ if (c.feature & cpu_to_le32(F2FS_FEATURE_RO)) {
+ set_cp(free_segment_count, f2fs_get_usable_segments(sb) - 2);
+ set_cp(user_block_count, ((get_cp(free_segment_count) + 2 -
get_cp(overprov_segment_count)) * c.blks_per_seg));
+ } else {
+ set_cp(free_segment_count, f2fs_get_usable_segments(sb) - 6);
+ set_cp(user_block_count, ((get_cp(free_segment_count) + 6 -
+ get_cp(overprov_segment_count)) * c.blks_per_seg));
+ }
/* cp page (2), data summaries (1), node summaries (3) */
set_cp(cp_pack_total_block_count, 6 + get_sb(cp_payload));
flags = CP_UMOUNT_FLAG | CP_COMPACT_SUM_FLAG;
@@ -847,8 +878,13 @@ static int f2fs_write_check_point_pack(void)
sum_compact_p += SUM_JOURNAL_SIZE;
memset(sum, 0, sizeof(struct f2fs_summary_block));
+
/* inode sit for root */
- journal->n_sits = cpu_to_le16(6);
+ 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) |
@@ -859,30 +895,43 @@ static int f2fs_write_check_point_pack(void)
if (c.lpf_inum)
f2fs_set_bit(i, (char *)journal->sit_j.entries[0].se.valid_map);
- 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));
+ 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);
+ } 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));
+ }
memcpy(sum_compact_p, &journal->n_sits, SUM_JOURNAL_SIZE);
sum_compact_p += SUM_JOURNAL_SIZE;
@@ -1090,7 +1139,7 @@ static int f2fs_discard_obsolete_dnode(void)
u_int64_t start_inode_pos = get_sb(main_blkaddr);
u_int64_t last_inode_pos;
- if (c.zoned_mode)
+ if (c.zoned_mode || c.feature & cpu_to_le32(F2FS_FEATURE_RO))
return 0;
raw_node = calloc(sizeof(struct f2fs_node), 1);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 10:14:12 +0000