Re: nfs invalidates lose pte dirty bits

[Trond Myklebust]

On Thu, 2005-12-22 at 18:55 +0100, Andrea Arcangeli wrote:
> Hello Andrew,
> 
> this is yet another problem exposed by the new invalidate_inode_pages2
> semantics.
> 
> If a mapping has dirty data (pte dirty and page clean), and an
> invalidate triggers, the filemap_write_and_wait will do nothing, but the
> invalidate_inode_pages2 will destroy the pte dirty bit and discard the
> pagecache.

See the latest git release where we introduce the nfs_sync_mapping()
helper.

Cheers,
  Trond

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