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fs: make the pipe_buf_operations ->steal operation optional

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Just return 1 for failure if it is not present.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2020-05-20 17:58:14 +02:00
committed by Al Viro
parent 6797d97ab9
commit 76887c2567
4 changed files with 2 additions and 16 deletions
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7
net/smc/smc_rx.c
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@@ -129,16 +129,9 @@ out:
sock_put(sk);
}
static int smc_rx_pipe_buf_nosteal(struct pipe_inode_info *pipe,
struct pipe_buffer *buf)
{
return 1;
}
static const struct pipe_buf_operations smc_pipe_ops = {
.confirm = generic_pipe_buf_confirm,
.release = smc_rx_pipe_buf_release,
.steal = smc_rx_pipe_buf_nosteal,
.get = generic_pipe_buf_get
};