| commit | b79d8854ee0e222c5beb52fc50246ad0b6d9088e | [log] [tgz] |
|---|---|---|
| author | Trond Myklebust <trond.myklebust@primarydata.com> | Sun Jan 28 09:29:41 2018 -0500 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Sat Feb 17 13:21:14 2018 +0100 |
| tree | b07cb5af096953372b712976bb9b06d84c6435bf | |
| parent | 967f650f8835012e9d8bf96bdace29a6b84b43db [diff] |
NFS: Fix a race between mmap() and O_DIRECT
commit e231c6879cfd44e4fffd384bb6dd7d313249a523 upstream.
When locking the file in order to do O_DIRECT on it, we must unmap
any mmapped ranges on the pagecache so that we can flush out the
dirty data.
Fixes: a5864c999de67 ("NFS: Do not serialise O_DIRECT reads and writes")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>