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Commit c40d5120 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: add an ioctl() to explicitly trigger fsck later 



This adds an option in ioctl(F2FS_IOC_SHUTDOWN) in order to trigger fsck by
setting a NEED_FSCK flag.

Generally, shutdown is used for the test to validate filesystem consistency, and
setting NEED_FSCK flag can be used for Android to trigger fsck.f2fs at boot time
explicitly so that we could measure the elapsed time as well as force filesystem
check.

Reviewed-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 06f722a0

fs/f2fs/f2fs.h

+1 −0
Original line number Diff line number Diff line
@@ -417,6 +417,7 @@ static inline bool __has_cursum_space(struct f2fs_journal *journal, 
#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 */

#define F2FS_GOING_DOWN_NEED_FSCK	0x4	/* going down to trigger fsck */



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

/*

fs/f2fs/file.c

+7 −0
Original line number Diff line number Diff line
@@ -1966,6 +1966,13 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) 
		f2fs_stop_checkpoint(sbi, false);

		set_sbi_flag(sbi, SBI_IS_SHUTDOWN);

		break;

	case F2FS_GOING_DOWN_NEED_FSCK:

		set_sbi_flag(sbi, SBI_NEED_FSCK);

		/* do checkpoint only */

		ret = f2fs_sync_fs(sb, 1);

		if (ret)

			goto out;

		break;

	default:

		ret = -EINVAL;

		goto out;