NFSv42: Fix pagecache invalidation after COPY/CLONE
The mechanism in use to allow the client to see the results of COPY/CLONE is to drop those pages from the pagecache. This forces the client to read those pages once more from the server. However, truncate_pagecache_range() zeros out partial pages instead of dropping them. Let us instead use invalidate_inode_pages2_range() with full-page offsets to ensure the client properly sees the results of COPY/CLONE operations. Cc: <stable@vger.kernel.org> # v4.7+ Fixes: 2e72448b ("NFS: Add COPY nfs operation") Signed-off-by:Benjamin Coddington <bcodding@redhat.com> Signed-off-by:
Trond Myklebust <trond.myklebust@hammerspace.com>
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