On Wed, 2005-03-02 at 13:20, Bryan Henderson wrote: > >u are talking about application aware caching/prefetching stuff. but i > >prefer to modifying kernel page cache a little bit while make use of > >most of the code there. > > That's a powerful argument for using the page cache, and further, for > using it from within the kernel. I once started a project to port a > particular filesystem driver from the kernel to user space. It was to be > used in a Linux system whose sole purpose was to export one filesystem via > NFS. I was looking for engineering ease. Everything about porting the > driver to user space was almost trivial except for duplicating the page > cache, and that was enough work to call into question the whole strategy > (I never went far enough to actually make a decision). > i tried several time before on implementing own cache structures in user space/ kernel space. every time i think i can do it better than before. but frankly, there are always corner cases that make it performs poor.
> But I'm sure there are cases where the tradeoff works. yes. i am sure about this as well. > > -- > Bryan Henderson San Jose California > IBM Almaden Research Center Filesystems - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
