Currently, it miss the part of F2FS_DIRTY_DATA to check whether there is enough free segments for the "reserved_sections" originally set in the mkfs.f2fs. As a result, it will use the reserved_sections part to write dirty data, and has to do gc_more to free a lot of sections together next time. This will cost much time to do so many fggc. So let's add the F2FS_DIRTY_DATA part and do a few gc gradually each time, which will avoid to do a large number of gc at the same time. And this will also make sure the pre-set "reserved_sections" is not used all the time and can be used anytime for gc when ssr segments are not enough. Signed-off-by: Yunlong Song <yunlong.song@xxxxxxxxxx> --- fs/f2fs/segment.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index f4020f1..44f2a46 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -490,12 +490,13 @@ static inline bool need_SSR(struct f2fs_sb_info *sbi) int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); + int data_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DATA); if (test_opt(sbi, LFS)) return false; return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs + - reserved_sections(sbi) + 1); + data_secs + reserved_sections(sbi) + 1); } static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, @@ -504,13 +505,14 @@ static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA); + int data_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DATA); if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) return false; return (free_sections(sbi) + freed) <= (node_secs + 2 * dent_secs + imeta_secs + - reserved_sections(sbi) + needed); + data_secs + reserved_sections(sbi) + needed); } static inline bool excess_prefree_segs(struct f2fs_sb_info *sbi) -- 1.8.5.2
