Re: [PATCH] cramfs corruption after BLKFLSBUF on loop device

 On Thu, Jun 01, Chris Mason wrote:

> I think this will work (but have not tested it).  Another option is to create 
> a read_cache_page that pins the page via a page flag 
> that invalidate_mapping_pages will honor.

PageLocked or PageDirty, the latter only with a mb().
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