linux-kernel - [PATCH] (resend) reuse xxx_fifo_fops for xxx_pipe

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Date:	Tue, 1 Jul 2008 11:03:02 +0200
From:	Denys Vlasenko <vda.linux@...glemail.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Al Viro <viro@...iv.linux.org.uk>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] (resend) reuse xxx_fifo_fops for xxx_pipe_fops

Hi Andrew, Al,

I posted this patch a few months ago, but it apparently
fell thru cracks. Here we go again.

I noticed that read/write/rdwr_pipe_fops are (1) const and
(2) exactly identical to xxx_fifo_fops, which are also const.

Attached patch #defines xxx_pipe_fops as aliases to xxx_fifo_fops.
Size difference:

# size linux-2.6.25-rc6*/*/pipe.o
   text    data     bss     dec     hex filename
   6534     144       0    6678    1a16 linux-2.6.25-rc6/fs/pipe.o
   5862     144       0    6006    1776 linux-2.6.25-rc6-pt/fs/pipe.o

Run-tested on 2.6.26-rc8. Please apply.

Signed-off-by: Denys Vlasenko <vda.linux@...glemail.com>
--
vda

View attachment "reuse_fifo_ops_for_pipe_ops.diff" of type "text/x-diff" (1316 bytes)