From 26d5859974bb817f7615be90199a8e82e3f0a0ed Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Fri, 14 Aug 2015 14:37:50 -0700 Subject: [PATCH] f2fs: avoid garbage collecting already moved node blocks If node blocks were already moved, we don't need to move them again. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 81de28d8326f..0a5d573e2574 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -396,14 +396,18 @@ static void gc_node_segment(struct f2fs_sb_info *sbi, { bool initial = true; struct f2fs_summary *entry; + block_t start_addr; int off; + start_addr = START_BLOCK(sbi, segno); + next_step: entry = sum; for (off = 0; off < sbi->blocks_per_seg; off++, entry++) { nid_t nid = le32_to_cpu(entry->nid); struct page *node_page; + struct node_info ni; /* stop BG_GC if there is not enough free sections. */ if (gc_type == BG_GC && has_not_enough_free_secs(sbi, 0)) @@ -426,6 +430,12 @@ next_step: continue; } + get_node_info(sbi, nid, &ni); + if (ni.blk_addr != start_addr + off) { + f2fs_put_page(node_page, 1); + continue; + } + /* set page dirty and write it */ if (gc_type == FG_GC) { f2fs_wait_on_page_writeback(node_page, NODE); -- 2.39.5