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Groups > linux.kernel > #1621703

Re: iov_iter_pipe warning.

From Al Viro <viro@ZenIV.linux.org.uk>
Newsgroups linux.kernel
Subject Re: iov_iter_pipe warning.
Date 2017-04-12 02:00 +0200
Message-ID <tvdRw-5mf-7@gated-at.bofh.it> (permalink)
References (5 earlier) <tvb3k-3yo-35@gated-at.bofh.it> <tvbmF-3WD-13@gated-at.bofh.it> <tvcsq-4zM-11@gated-at.bofh.it> <tvdou-5c0-7@gated-at.bofh.it> <tvdHP-5iG-1@gated-at.bofh.it>
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On Tue, Apr 11, 2017 at 07:45:58PM -0400, Dave Jones wrote:
>  > 	if (file->f_op->splice_write == generic_splice_sendpage) {
>  > 		struct socket *sock = file->private_data;
>  > 		printk(KERN_ERR "socket [%d, %p]\n", sock->type, sock->ops);
>  > 	}
>  > 	printk(KERN_ERR "in->f_op = %p\n", in->f_op);
> 
> Ugh, this explodes with a million errors when I try to compile it. 
> It misses socket definition, and include <linux/net.h> causes another
> cascade of errors about linkage.h and nonsense.

Ignore the socket part - you've already triggered it with NFS file as
destination, so this is not particularly interesting.  I would still like
to see in->f_op and even more - the checks in default_file_splice_read().

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Thread

Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-10 21:30 +0200
  Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-10 21:50 +0200
    Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-10 22:00 +0200
      Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-11 01:50 +0200
        Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-11 02:30 +0200
          Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-11 05:10 +0200
            Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-11 05:30 +0200
              Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-11 23:00 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-11 23:20 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 00:30 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 01:30 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 01:40 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 01:50 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 01:50 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 02:00 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 02:10 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 02:20 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 03:00 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 03:20 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 04:30 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 05:00 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 16:40 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 17:30 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 18:30 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 19:10 +0200
                Re: iov_iter_pipe warning. Dave Jones <davej@codemonkey.org.uk> - 2017-04-12 21:10 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-21 21:10 +0200
                Re: iov_iter_pipe warning. Al Viro <viro@ZenIV.linux.org.uk> - 2017-04-12 02:00 +0200

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