Re: [PATCH v2] staging/lustre: lloop depends on BLOCK

From: Christoph Hellwig
Date: Fri Aug 02 2013 - 06:49:40 EST

On Thu, Aug 01, 2013 at 07:57:22PM +0000, Dilger, Andreas wrote:
> It provides significant performance improvement for network IO on Lustre.
> It bypasses DLM locking in Lustre and the VFS layer on the client, copying
> in the loop driver, and page-by-page IO submission in the normal IO path.

Part of being upstream is improving existing drivers instead of copy and
pasting them. Please take a Look at Shaggys in-kernel direct I/O and
loop improvements and submit any incremental improvements ontop of that

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