linux-kernel - Re: [RFC][glibc PATCH] fcntl-linux.h: add new definitions and manual updates for open file description locks

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Message-Id: <E1Wcyo3-0000Eg-UC@fencepost.gnu.org>
Date:	Wed, 23 Apr 2014 11:09:51 -0400
From:	ams@....org (Alfred M. Szmidt)
To:	Jeff Layton <jlayton@...hat.com>
CC:	libc-alpha@...rceware.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, tytso@....edu, dalias@...c.org,
	mtk.manpages@...il.com, samba-technical@...ts.samba.org,
	nfs-ganesha-devel@...ts.sourceforge.net, carlos@...hat.com,
	metze@...ba.org, hch@...radead.org, bharrosh@...asas.com
Subject: Re: [RFC][glibc PATCH] fcntl-linux.h: add new definitions and manual updates for open file description locks

   @@ -2890,7 +2894,7 @@ Get flags associated with the open file.  @xref{File Status Flags}.
    Set flags associated with the open file.  @xref{File Status Flags}.

    @item F_GETLK
   -Get a file lock.  @xref{File Locks}.
   +Test a file lock.  @xref{File Locks}.

F_GETLK does get the (first) lock which blocks; it doesn't test for
it.  "Retrieves information about the first blocking lock ..." or
something might be better than the original

   @@ -2898,6 +2902,18 @@ Set or clear a file lock.  @xref{File Locks}.
    @item F_SETLKW
    Like @code{F_SETLK}, but wait for completion.  @xref{File Locks}.

   +@...m F_OFD_GETLK
   +Test a open file description lock.  @xref{Open File Description Locks}.
   +Specific to Linux.

Likewise.  You infact write that it does get the lock information
later in the document wrt. F_OFD_GETLK.
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