Commit 40a02be1 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: do not issue next dnode discard redundantly 



We have a discard map, so that we can avoid redundant discard issues.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 498c5e9f

fs/f2fs/segment.c

+14 −1
Original line number Diff line number Diff line
@@ -486,7 +486,20 @@ static int f2fs_issue_discard(struct f2fs_sb_info *sbi, 


void discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr)

{

	if (f2fs_issue_discard(sbi, blkaddr, 1)) {

	int err = -ENOTSUPP;



	if (test_opt(sbi, DISCARD)) {

		struct seg_entry *se = get_seg_entry(sbi,

				GET_SEGNO(sbi, blkaddr));

		unsigned int offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr);



		if (f2fs_test_bit(offset, se->discard_map))

			return;



		err = f2fs_issue_discard(sbi, blkaddr, 1);

	}



	if (err) {

		struct page *page = grab_meta_page(sbi, blkaddr);

		/* zero-filled page */

		set_page_dirty(page);