RE: [PATCH v2] exfat: call sync_filesystem for read-only remount

[Namjae Jeon]

> > We need to commit dirty metadata and pages to disk before remounting
> > exfat as read-only.
> >
> > This fixes a failure in xfstests generic/452
> >
> > generic/452 does the following:
> > cp something <exfat>/
> > mount -o remount,ro <exfat>
> >
> > the <exfat>/something is corrupted. because while exfat is remounted
> > as read-only, exfat doesn't have a chance to commit metadata and vfs
> > invalidates page caches in a block device.
> >
> > Signed-off-by: Hyunchul Lee <hyc.lee@xxxxxxxxx>
> 
> Acked-by: Sungjong Seo <sj1557.seo@xxxxxxxxxxx>
Applied. Thanks!