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SubjectRe: O_NONBLOCK, read(), select(), NFS, Ext2, etc.
    From: Chris Wedgwood <>

On Thu, Jan 11, 2001 at 09:34:08PM -0500, Michael Rothwell wrote:

The man pages for open, read and write say that if a file is opened
using the O_NONBLOCK flag, then read() and write() will always return
immediately and not block the calling process.

the man pages are wrong

Don't you think cc'ing the man page maintainer []
would be a good idea whenever you think something is wrong
in the man pages? You never know, they might even improve.

In this particular case I don't think anything is actually
wrong, but I can well imagine that someone can invent clearer
wording. It would also be useful to more clearly separate
POSIX-mandated behaviour and actual Linux behaviour.
Suggestions and patches are welcome as always.

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