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Commit 26d58599 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: avoid garbage collecting already moved node blocks 



If node blocks were already moved, we don't need to move them again.

Reviewed-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 740432f8

fs/f2fs/gc.c

+10 −0
Original line number Diff line number Diff line
@@ -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 @@ static void gc_node_segment(struct f2fs_sb_info *sbi, 
			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);