Re: Kernel bug: Bad page state: related to generic symlink code and mmap

[Mika Penttilä <mika.penttila@kolumbus.fi>]

Al Viro wrote:

> On Fri, Aug 19, 2005 at 10:16:47PM +0300, Mika Penttilä wrote:
>  
>
> > Just out of curiosity - what protects even local filesystems against 
> > concurrent truncate and symlink resolving when using the page cache helpers?
> >    
>
> How do you get truncate(2) or ftruncate(2) to do something with a symlink?
> The former follows links, the latter takes an open file...
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>  
Yes that is right, there is no way to invalidate the symlink inode 
mapping page(s) from user space.

--Mika




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