[PATCH 07/12] fs: btrfs: Use ktime_get_real_ts for root ctime

[David Sterba]

On Fri, Apr 07, 2017 at 05:57:05PM -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 at gmail.com>
> Acked-by: David Sterba <dsterba at suse.com>
> Reviewed-by: Arnd Bergmann <arnd at arndb.de>

I'm going to add the patch to my 4.12 queue and will let Andrew know.
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