Christoph Hellwig b8d9e7f241 fs: make the pipe_buf_operations ->confirm operation optional ...

Just return 0 for success if it is not present.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

2020-05-20 12:11:26 -04:00

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