struct f2fs_gc_kthread *gc_thread; /* GC thread */
unsigned int cur_victim_sec; /* current victim section num */
unsigned int gc_mode; /* current GC state */
+ unsigned int next_victim_seg[2]; /* next segment in victim section */
/* for skip statistic */
unsigned long long skipped_atomic_files[2]; /* FG_GC and BG_GC */
unsigned long long skipped_gc_rwsem; /* FG_GC only */
/* maximum # of trials to find a victim segment for SSR and GC */
unsigned int max_victim_search;
+ /* migration granularity of garbage collection, unit: segment */
+ unsigned int migration_granularity;
/*
* for stat information.
if (p.max_search == 0)
goto out;
+ if (__is_large_section(sbi) && p.alloc_mode == LFS) {
+ if (sbi->next_victim_seg[BG_GC] != NULL_SEGNO) {
+ p.min_segno = sbi->next_victim_seg[BG_GC];
+ *result = p.min_segno;
+ sbi->next_victim_seg[BG_GC] = NULL_SEGNO;
+ goto got_result;
+ }
+ if (gc_type == FG_GC &&
+ sbi->next_victim_seg[FG_GC] != NULL_SEGNO) {
+ p.min_segno = sbi->next_victim_seg[FG_GC];
+ *result = p.min_segno;
+ sbi->next_victim_seg[FG_GC] = NULL_SEGNO;
+ goto got_result;
+ }
+ }
+
last_victim = sm->last_victim[p.gc_mode];
if (p.alloc_mode == LFS && gc_type == FG_GC) {
p.min_segno = check_bg_victims(sbi);
}
if (p.min_segno != NULL_SEGNO) {
got_it:
+ *result = (p.min_segno / p.ofs_unit) * p.ofs_unit;
+got_result:
if (p.alloc_mode == LFS) {
secno = GET_SEC_FROM_SEG(sbi, p.min_segno);
if (gc_type == FG_GC)
else
set_bit(secno, dirty_i->victim_secmap);
}
- *result = (p.min_segno / p.ofs_unit) * p.ofs_unit;
trace_f2fs_get_victim(sbi->sb, type, gc_type, &p,
sbi->cur_victim_sec,
struct blk_plug plug;
unsigned int segno = start_segno;
unsigned int end_segno = start_segno + sbi->segs_per_sec;
- int seg_freed = 0;
+ int seg_freed = 0, migrated = 0;
unsigned char type = IS_DATASEG(get_seg_entry(sbi, segno)->type) ?
SUM_TYPE_DATA : SUM_TYPE_NODE;
int submitted = 0;
+ if (__is_large_section(sbi))
+ end_segno = rounddown(end_segno, sbi->segs_per_sec);
+
/* readahead multi ssa blocks those have contiguous address */
if (__is_large_section(sbi))
f2fs_ra_meta_pages(sbi, GET_SUM_BLOCK(sbi, segno),
- sbi->segs_per_sec, META_SSA, true);
+ end_segno - segno, META_SSA, true);
/* reference all summary page */
while (segno < end_segno) {
if (get_valid_blocks(sbi, segno, false) == 0)
goto freed;
+ if (__is_large_section(sbi) &&
+ migrated >= sbi->migration_granularity)
+ goto skip;
if (!PageUptodate(sum_page) || unlikely(f2fs_cp_error(sbi)))
- goto next;
+ goto skip;
sum = page_address(sum_page);
if (type != GET_SUM_TYPE((&sum->footer))) {
"type [%d, %d] in SSA and SIT",
segno, type, GET_SUM_TYPE((&sum->footer)));
set_sbi_flag(sbi, SBI_NEED_FSCK);
- goto next;
+ goto skip;
}
/*
if (gc_type == FG_GC &&
get_valid_blocks(sbi, segno, false) == 0)
seg_freed++;
-next:
+ migrated++;
+
+ if (__is_large_section(sbi) && segno + 1 < end_segno)
+ sbi->next_victim_seg[gc_type] = segno + 1;
+skip:
f2fs_put_page(sum_page, 0);
}