tree 994520d462eaa508313e23750c992e48a0dba08e
parent be36e185bd26388355d3ea1847278b96ab350792
author Trond Myklebust <trond.myklebust@primarydata.com> 1425095659 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> 1425270160 -0500

NFS: Ensure that buffered writes wait for O_DIRECT writes to complete

The O_DIRECT code will grab the inode->i_mutex and flush out buffered
writes, before scheduling a read or a write. However there is no
equivalent in the buffered write code to wait for O_DIRECT to complete.

Fixes a reported issue in xfstests generic/133, when first performing an
O_DIRECT write followed by a buffered write.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>