Re: [PATCH 04/24] fs: Provide infrastructure for dynamic BDIs in filesystems

On Fri, Feb 03, 2017 at 02:50:42PM +0100, Jan Kara wrote:

On Thu 02-02-17 11:28:27, Liu Bo wrote:

quoted

Hi,

On Thu, Feb 02, 2017 at 06:34:02PM +0100, Jan Kara wrote:

quoted

Provide helper functions for setting up dynamically allocated
backing_dev_info structures for filesystems and cleaning them up on
superblock destruction.

Just one concern, will this cause problems for multiple superblock cases
like nfs with nosharecache?

Can you ellaborate a bit? I've looked for a while what nfs with
nosharecache does but I didn't see how it would influence anything with
bdis...

Oh, I missed that bdi_seq was static, then it should be fine.

(I was worried about that nfs with nosharecache would have multiple
superblocks and if each superblock has a bdi using the same bdi name,
nfs-xx.)

Thanks for the reply.

Thanks,

-liubo