[PATCH 3/3] Open files only once

[Ed W]

Brad Fitzpatrick wrote:
>
> Did you even measure that this patch had any positive effect, even for 
> small files?  Because if you just read the small file, it should still 
> be in the kernel's page cache and reading it should incur no extra I/O.

Does this logic apply if the file system is network based?  Many net 
filesystems have varying weights of locking around opening files.

Bit speculative, just wondering how many people use some kind of remote 
filesystem based access to backup a remote machine (rather than running 
brackup on the remote machine say)?

Ed W