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

Mika Penttilä
2005-08-19T19:49:22Z

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