clean up some redundant repeat code in build_sit_entries
and seperate some logic into new functions:
- build_discard_entries
- build_sec_entries
Note that "if (f2fs_discard_en(sbi))" and "if (sbi->segs_per_sec > 1)"
are all taken out of the loops they are unchangable.
Signed-off-by: Gao Xiang <gaoxian...@huawei.com>
---
fs/f2fs/segment.c | 80
+++++++++++++++++++++++++------------------------------
1 file changed, 37 insertions(+), 43 deletions(-)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 40e1d20..bcd8a40 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3476,12 +3476,39 @@ static int build_curseg(struct f2fs_sb_info *sbi)
return restore_curseg_summaries(sbi);
}
+static void build_discard_entries(struct f2fs_sb_info *sbi)
+{
+ unsigned segno;
+
+ for (segno = 0; segno < MAIN_SEGS(sbi); ++segno) {
+ struct seg_entry *se = get_seg_entry(sbi, segno);
+
+ if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG))
+ memset(se->discard_map, 0xff, SIT_VBLOCK_MAP_SIZE);
+ else {
+ memcpy(se->discard_map, se->cur_valid_map,
+ SIT_VBLOCK_MAP_SIZE);
+
+ sbi->discard_blks += sbi->blocks_per_seg -
+ se->valid_blocks;
+ }
+ }
+}
+
+static void build_sec_entries(struct f2fs_sb_info *sbi)
+{
+ unsigned segno;
+
+ for (segno = 0; segno < MAIN_SEGS(sbi); ++segno)
+ get_sec_entry(sbi, segno)->valid_blocks +=
+ get_seg_entry(sbi, segno)->valid_blocks;
+}
+
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_journal *journal = curseg->journal;
- struct seg_entry *se;
struct f2fs_sit_entry sit;
int sit_blk_cnt = SIT_BLK_CNT(sbi);
unsigned int i, start, end;
@@ -3498,67 +3525,34 @@ static void build_sit_entries(struct
f2fs_sb_info *sbi)
struct f2fs_sit_block *sit_blk;
struct page *page;
- se = &sit_i->sentries[start];
page = get_current_sit_page(sbi, start);
sit_blk = (struct f2fs_sit_block *)page_address(page);
sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)];
f2fs_put_page(page, 1);
check_block_count(sbi, start, &sit);
- seg_info_from_raw_sit(se, &sit);
-
- /* build discard map only one time */
- if (f2fs_discard_en(sbi)) {
- if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
- memset(se->discard_map, 0xff,
- SIT_VBLOCK_MAP_SIZE);
- } else {
- memcpy(se->discard_map,
- se->cur_valid_map,
- SIT_VBLOCK_MAP_SIZE);
- sbi->discard_blks +=
- sbi->blocks_per_seg -
- se->valid_blocks;
- }
- }
- if (sbi->segs_per_sec > 1)
- get_sec_entry(sbi, start)->valid_blocks +=
- se->valid_blocks;
+ seg_info_from_raw_sit(&sit_i->sentries[start], &sit);
}
start_blk += readed;
} while (start_blk < sit_blk_cnt);
down_read(&curseg->journal_rwsem);
for (i = 0; i < sits_in_cursum(journal); i++) {
- unsigned int old_valid_blocks;
-
start = le32_to_cpu(segno_in_journal(journal, i));
- se = &sit_i->sentries[start];
sit = sit_in_journal(journal, i);
- old_valid_blocks = se->valid_blocks;
-
check_block_count(sbi, start, &sit);
- seg_info_from_raw_sit(se, &sit);
-
- if (f2fs_discard_en(sbi)) {
- if (is_set_ckpt_flags(sbi, CP_TRIMMED_FLAG)) {
- memset(se->discard_map, 0xff,
- SIT_VBLOCK_MAP_SIZE);
- } else {
- memcpy(se->discard_map, se->cur_valid_map,
- SIT_VBLOCK_MAP_SIZE);
- sbi->discard_blks += old_valid_blocks -
- se->valid_blocks;
- }
- }
-
- if (sbi->segs_per_sec > 1)
- get_sec_entry(sbi, start)->valid_blocks +=
- se->valid_blocks - old_valid_blocks;
+ seg_info_from_raw_sit(&sit_i->sentries[start], &sit);
}
up_read(&curseg->journal_rwsem);
+
+ /* build discard map only one time */
+ if (f2fs_discard_en(sbi))
+ build_discard_entries(sbi);
+
+ if (sbi->segs_per_sec > 1)
+ build_sec_entries(sbi);
}
static void init_free_segmap(struct f2fs_sb_info *sbi)
--
2.1.4
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