Commit c912a829 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: add F2FS_GOING_DOWN_METAFLUSH to test power-failure 



This patch introduces F2FS_GOING_DOWN_METAFLUSH which flushes meta pages like
SSA blocks and then blocks all the writes.
This can be used by power-failure tests.

Reviewed-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 6066d8cd

fs/f2fs/f2fs.h

+1 −0
Original line number Diff line number Diff line
@@ -250,6 +250,7 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, 
#define F2FS_GOING_DOWN_FULLSYNC	0x0	/* going down with full sync */

#define F2FS_GOING_DOWN_METASYNC	0x1	/* going down with metadata */

#define F2FS_GOING_DOWN_NOSYNC		0x2	/* going down */

#define F2FS_GOING_DOWN_METAFLUSH	0x3	/* going down with meta flush */



#if defined(__KERNEL__) && defined(CONFIG_COMPAT)

/*

fs/f2fs/file.c

+4 −0
Original line number Diff line number Diff line
@@ -1498,6 +1498,10 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
	case F2FS_GOING_DOWN_NOSYNC:

		f2fs_stop_checkpoint(sbi);

		break;

	case F2FS_GOING_DOWN_METAFLUSH:

		sync_meta_pages(sbi, META, LONG_MAX);

		f2fs_stop_checkpoint(sbi);

		break;

	default:

		return -EINVAL;

	}