Re: [PATCH v4 10/26] fs: btrfs: Use ktime_get_real_ts for root ctime

[David Sterba]

On Sat, Aug 13, 2016 at 03:48:22PM -0700, Deepa Dinamani wrote:
> btrfs_root_item maintains the ctime for root updates.
> This is not part of vfs_inode.
> 
> Since current_time() uses struct inode* as an argument
> as Linus suggested, this cannot be used to update root
> times unless, we modify the signature to use inode.
> 
> Since btrfs uses nanosecond time granularity, it can also
> use ktime_get_real_ts directly to obtain timestamp for
> the root. It is necessary to use the timespec time api
> here because the same btrfs_set_stack_timespec_*() apis
> are used for vfs inode times as well. These can be
> transitioned to using timespec64 when btrfs internally
> changes to use timespec64 as well.
> 
> Signed-off-by: Deepa Dinamani <deepa.kernel@xxxxxxxxx>
> Acked-by: David Sterba <dsterba@xxxxxxxx>
> Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Chris Mason <clm@xxxxxx>
> Cc: David Sterba <dsterba@xxxxxxxx>

Acked-by: David Sterba <dsterba@xxxxxxxx>