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Commit af697c0f authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: keep meta pages in cp_error state 



It turns out losing meta pages in shutdown period makes f2fs very unstable
so that I could see many unexpected error conditions.

Let's keep meta pages for fault injection and sudden power-off tests.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 1cb50f87

fs/f2fs/checkpoint.c

+13 −15
Original line number Diff line number Diff line
@@ -242,11 +242,8 @@ static int __f2fs_write_meta_page(struct page *page, 


	trace_f2fs_writepage(page, META);



	if (unlikely(f2fs_cp_error(sbi))) {

		dec_page_count(sbi, F2FS_DIRTY_META);

		unlock_page(page);

		return 0;

	}

	if (unlikely(f2fs_cp_error(sbi)))

		goto redirty_out;

	if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))

		goto redirty_out;

	if (wbc->for_reclaim && page->index < GET_SUM_BLOCK(sbi, 0))
@@ -1129,6 +1126,9 @@ static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) 
		if (!get_pages(sbi, F2FS_WB_CP_DATA))

			break;



		if (unlikely(f2fs_cp_error(sbi)))

			break;



		io_schedule_timeout(5*HZ);

	}

	finish_wait(&sbi->cp_wait, &wait);
@@ -1202,8 +1202,12 @@ static void commit_checkpoint(struct f2fs_sb_info *sbi, 


	/* writeout cp pack 2 page */

	err = __f2fs_write_meta_page(page, &wbc, FS_CP_META_IO);

	f2fs_bug_on(sbi, err);

	if (unlikely(err && f2fs_cp_error(sbi))) {

		f2fs_put_page(page, 1);

		return;

	}



	f2fs_bug_on(sbi, err);

	f2fs_put_page(page, 0);



	/* submit checkpoint (with barrier if NOBARRIER is not set) */
@@ -1229,7 +1233,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 
	while (get_pages(sbi, F2FS_DIRTY_META)) {

		f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_CP_META_IO);

		if (unlikely(f2fs_cp_error(sbi)))

			return -EIO;

			break;

	}



	/*
@@ -1309,7 +1313,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 
			f2fs_sync_meta_pages(sbi, META, LONG_MAX,

							FS_CP_META_IO);

			if (unlikely(f2fs_cp_error(sbi)))

				return -EIO;

				break;

		}

	}
@@ -1350,9 +1354,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 
	/* wait for previous submitted meta pages writeback */

	wait_on_all_pages_writeback(sbi);



	if (unlikely(f2fs_cp_error(sbi)))

		return -EIO;



	/* flush all device cache */

	err = f2fs_flush_device_cache(sbi);

	if (err)
@@ -1364,9 +1365,6 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 


	f2fs_release_ino_entry(sbi, false);



	if (unlikely(f2fs_cp_error(sbi)))

		return -EIO;



	clear_sbi_flag(sbi, SBI_IS_DIRTY);

	clear_sbi_flag(sbi, SBI_NEED_CP);

	__set_cp_next_pack(sbi);
@@ -1381,7 +1379,7 @@ static int do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) 


	f2fs_bug_on(sbi, get_pages(sbi, F2FS_DIRTY_DENTS));



	return 0;

	return unlikely(f2fs_cp_error(sbi)) ? -EIO : 0;

}



/*