Re: [PATCH] f2fs: fix fdatasync

[Christoph Hellwig]

On Wed, Nov 16, 2016 at 08:12:11PM +0800, Chao Yu wrote:
> For below two cases, we can't guarantee data consistence:
> 
> a)
> 1. xfs_io "pwrite 0 4195328" "fsync"
> 2. xfs_io "pwrite 4195328 1024" "fdatasync"
> 3. godown
> 4. umount & mount
> --> isize we updated before fdatasync won't be recovered
> 
> b)
> 1. xfs_io "pwrite -S 0xcc 0 4202496" "fsync"
> 2. xfs_io "fpunch 4194304 4096" "fdatasync"
> 3. godown
> 4. umount & mount
> --> dnode we punched before fdatasync won't be recovered

Can you please add testcases for these to xfstests?