On 10/16, Chao Yu wrote:
> On 2017/10/15 3:22, Jaegeuk Kim wrote:
> > We should close the device by main body of each tools.
> > 
> > Signed-off-by: Jaegeuk Kim <[email protected]>
> > ---
> >  fsck/mount.c | 3 ---
> >  1 file changed, 3 deletions(-)
> > 
> > diff --git a/fsck/mount.c b/fsck/mount.c
> > index 7a28314..c78314e 100644
> > --- a/fsck/mount.c
> > +++ b/fsck/mount.c
> > @@ -1941,9 +1941,6 @@ void write_checkpoint(struct f2fs_sb_info *sbi)
> >     if (flags & CP_NAT_BITS_FLAG)
> >             write_nat_bits(sbi, sb, cp, sbi->cur_cp);
> >  
> > -   /* in case of sudden power off */
> > -   f2fs_finalize_device();
> 
> IIRC, Yunlei wants to fsync previous data in checkpoint area before write last
> CP pack, in order to avoid checkpoint corruption in sudden-power-off case.
> 
> Shouldn't we use fsync(main-device-fd) here instead?

Yunlei,

If it's correct, could you write a patch introducing a generic function to call
fsync() only? I should have reviewed the original patch tho.

Thanks,

> 
> Thanks,
> 
> > -
> >     /* write the last cp */
> >     ret = dev_write_block(cp, cp_blk_no++);
> >     ASSERT(ret >= 0);
> > 

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