tree c896bd0432fcd79e625f51ab081ef2b21ddadb7e
parent 22cd1bf1480133518b3e5568466759ffde649b35
author Christoph Hellwig <hch@infradead.org> 1384447833 -0800
committer Trond Myklebust <trond.myklebust@primarydata.com> 1389652190 -0500

nfs: take i_mutex during direct I/O reads

We'll need the i_mutex to prevent i_dio_count from incrementing while
truncate is waiting for it to reach zero, and protects against having
the pagecache repopulated after we flushed it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>