[PATCH 00/21] erofs: patchset addressing Christoph's comments

[Gao Xiang]

Hi Christoph,

On Tue, Sep 03, 2019 at 08:37:04AM -0700, Christoph Hellwig wrote:
> On Tue, Sep 03, 2019 at 04:17:49PM +0800, Gao Xiang wrote:
> > I implement a prelimitary version, but I have no idea it is a really
> > cleanup for now.
> 
> The fact that this has to guess the block device address_space
> implementation is indeed pretty ugly.  I'd much prefer to just use
> read_cache_page_gfp, and live with the fact that this allocates
> bufferheads behind you for now.  I'll try to speed up my attempts to
> get rid of the buffer heads on the block device mapping instead.

Fully agree with your point. Let me use read_cache_page_gfp
instead for now, hoping block device quickly avoiding from
buffer_heads...

Thanks,
Gao Xiang