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Re: [PATCH V4 07/12] cgroup: export fhandle info for a cgroup

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On Wed, Jun 28, 2017 at 09:29:57AM -0700, Shaohua Li wrote:
> From: Shaohua Li <shli@fb.com>
> 
> Add an API to export cgroup fhandle info. We don't export a full 'struct
> file_handle', there are unrequired info. Sepcifically, cgroup is always
> a directory, so we don't need a 'FILEID_INO32_GEN_PARENT' type fhandle,
> we only need export the inode number and generation number just like
> what generic_fh_to_dentry does. And we can avoid the overhead of getting
> an inode too, since kernfs_node_id (ino and generation) has all the info
> required.
> 
> Signed-off-by: Shaohua Li <shli@fb.com>

Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun

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[PATCH V4 00/12] blktrace: output cgroup info Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
  [PATCH V4 09/12] block: always attach cgroup info into bio Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
  [PATCH V4 07/12] cgroup: export fhandle info for a cgroup Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
    Re: [PATCH V4 07/12] cgroup: export fhandle info for a cgroup Tejun Heo <tj@kernel.org> - 2017-06-28 20:20 +0200
  [PATCH V4 06/12] kernfs: add exportfs operations Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
    Re: [PATCH V4 06/12] kernfs: add exportfs operations Greg KH <gregkh@linuxfoundation.org> - 2017-06-29 15:00 +0200
  Re: [PATCH V4 00/12] blktrace: output cgroup info Jens Axboe <axboe@kernel.dk> - 2017-06-28 20:00 +0200
  [PATCH V4 10/12] block: call __bio_free in bio_endio Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
    Re: [PATCH V4 10/12] block: call __bio_free in bio_endio Christoph Hellwig <hch@lst.de> - 2017-06-28 23:30 +0200
      Re: [PATCH V4 10/12] block: call __bio_free in bio_endio Shaohua Li <shli@kernel.org> - 2017-06-28 23:50 +0200
        Re: [PATCH V4 10/12] block: call __bio_free in bio_endio Christoph Hellwig <hch@lst.de> - 2017-06-29 19:20 +0200
          Re: [PATCH V4 10/12] block: call __bio_free in bio_endio Shaohua Li <shli@kernel.org> - 2017-06-29 20:40 +0200
            Re: [PATCH V4 10/12] block: call __bio_free in bio_endio Christoph Hellwig <hch@lst.de> - 2017-06-29 22:30 +0200
  [PATCH V4 11/12] blktrace: add an option to allow displying cgroup path Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
  [PATCH V4 08/12] blktrace: export cgroup info in trace Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
  [PATCH V4 02/12] kernfs: implement i_generation Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
    Re: [PATCH V4 02/12] kernfs: implement i_generation Greg KH <gregkh@linuxfoundation.org> - 2017-06-29 15:00 +0200
  [PATCH V4 05/12] kernfs: introduce kernfs_node_id Shaohua Li <shli@kernel.org> - 2017-06-28 20:00 +0200
    Re: [PATCH V4 05/12] kernfs: introduce kernfs_node_id Greg KH <gregkh@linuxfoundation.org> - 2017-06-29 15:00 +0200

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