Re: [PATCH] fix crash when using XFS on loopback

[John David Anglin]

On 4-Jan-14, at 12:45 PM, Mikulas Patocka wrote:

> * flush_dcache_page asks for the list of userspace mappings, however  
> that
>  page->mapping field is reused by the slab subsystem for a different
>  purpose. This causes the crash.

I'd noticed the other day that the parisc implementation of  
flush_dcache_page()
should return if "!mapping || mapping != page->mapping" is true.  This  
would
have avoided crash.

Dave
--
John David Anglin	dave.anglin@xxxxxxxx



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