There was a bug that finishing FG GC unconditionally because free sections are over-estimated after checkpoint in FG GC. This patch initializes sec_freed by every checkpoint in FG GC.
Signed-off-by: Yonggil Song <[email protected]> --- fs/f2fs/gc.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index d455140322a8..51d7e8d29bf1 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1797,7 +1797,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) { int gc_type = gc_control->init_gc_type; unsigned int segno = gc_control->victim_segno; - int sec_freed = 0, seg_freed = 0, total_freed = 0; + int sec_freed = 0, seg_freed = 0, total_freed = 0, total_sec_freed = 0; int ret = 0; struct cp_control cpc; struct gc_inode_list gc_list = { @@ -1842,6 +1842,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) ret = f2fs_write_checkpoint(sbi, &cpc); if (ret) goto stop; + /* Reset due to checkpoint */ + sec_freed = 0; } } @@ -1866,15 +1868,17 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) gc_control->should_migrate_blocks); total_freed += seg_freed; - if (seg_freed == f2fs_usable_segs_in_sec(sbi, segno)) + if (seg_freed == f2fs_usable_segs_in_sec(sbi, segno)) { sec_freed++; + total_sec_freed++; + } if (gc_type == FG_GC) { sbi->cur_victim_sec = NULL_SEGNO; if (has_enough_free_secs(sbi, sec_freed, 0)) { if (!gc_control->no_bg_gc && - sec_freed < gc_control->nr_free_secs) + total_sec_freed < gc_control->nr_free_secs) goto go_gc_more; goto stop; } @@ -1901,6 +1905,8 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) ret = f2fs_write_checkpoint(sbi, &cpc); if (ret) goto stop; + /* Reset due to checkpoint */ + sec_freed = 0; } go_gc_more: segno = NULL_SEGNO; @@ -1913,7 +1919,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) if (gc_type == FG_GC) f2fs_unpin_all_sections(sbi, true); - trace_f2fs_gc_end(sbi->sb, ret, total_freed, sec_freed, + trace_f2fs_gc_end(sbi->sb, ret, total_freed, total_sec_freed, get_pages(sbi, F2FS_DIRTY_NODES), get_pages(sbi, F2FS_DIRTY_DENTS), get_pages(sbi, F2FS_DIRTY_IMETA), @@ -1927,7 +1933,7 @@ int f2fs_gc(struct f2fs_sb_info *sbi, struct f2fs_gc_control *gc_control) put_gc_inode(&gc_list); if (gc_control->err_gc_skipped && !ret) - ret = sec_freed ? 0 : -EAGAIN; + ret = total_sec_freed ? 0 : -EAGAIN; return ret; } -- 2.34.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
