CIFS: Fix leaking locked VFS cache pages in writeback retry
If we don't find a writable file handle when retrying writepages we break of the loop and do not unlock and put pages neither from wdata2 nor from the original wdata. Fix this by walking through all the remaining pages and cleanup them properly. Cc: <stable@vger.kernel.org> Signed-off-by: NPavel Shilovsky <pshilov@microsoft.com> Signed-off-by: NSteve French <stfrench@microsoft.com>
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