From a9163b947ae8f7af7cb8d63606cd87b9facbfe74 Mon Sep 17 00:00:00 2001 From: Byungki Lee Date: Fri, 29 Apr 2022 13:29:53 -0700 Subject: f2fs: write checkpoint during FG_GC If there's not enough free sections each of which consistis of large segments, we can hit no free section for upcoming section allocation. Let's reclaim some prefree segments by writing checkpoints. Signed-off-by: Byungki Lee Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 38 +++++++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 15 deletions(-) (limited to 'fs/f2fs') diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 6a7e4148ff9d..a193862ad8a5 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1790,23 +1790,31 @@ gc_more: if (sync) goto stop; - if (has_not_enough_free_secs(sbi, sec_freed, 0)) { - if (skipped_round <= MAX_SKIP_GC_COUNT || - skipped_round * 2 < round) { - segno = NULL_SEGNO; - goto gc_more; - } + if (!has_not_enough_free_secs(sbi, sec_freed, 0)) + goto stop; - if (first_skipped < last_skipped && - (last_skipped - first_skipped) > - sbi->skipped_gc_rwsem) { - f2fs_drop_inmem_pages_all(sbi, true); - segno = NULL_SEGNO; - goto gc_more; - } - if (gc_type == FG_GC && !is_sbi_flag_set(sbi, SBI_CP_DISABLED)) + if (skipped_round <= MAX_SKIP_GC_COUNT || skipped_round * 2 < round) { + + /* Write checkpoint to reclaim prefree segments */ + if (free_sections(sbi) < NR_CURSEG_PERSIST_TYPE && + prefree_segments(sbi) && + !is_sbi_flag_set(sbi, SBI_CP_DISABLED)) { ret = f2fs_write_checkpoint(sbi, &cpc); - } + if (ret) + goto stop; + } + segno = NULL_SEGNO; + goto gc_more; + } + if (first_skipped < last_skipped && + (last_skipped - first_skipped) > + sbi->skipped_gc_rwsem) { + f2fs_drop_inmem_pages_all(sbi, true); + segno = NULL_SEGNO; + goto gc_more; + } + if (gc_type == FG_GC && !is_sbi_flag_set(sbi, SBI_CP_DISABLED)) + ret = f2fs_write_checkpoint(sbi, &cpc); stop: SIT_I(sbi)->last_victim[ALLOC_NEXT] = 0; SIT_I(sbi)->last_victim[FLUSH_DEVICE] = init_segno; -- cgit v1.2.3