linux-kernel - [patch] kill pointless ki_nbytes assignment in aio_setup_single

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 4 Dec 2006 08:34:25 -0800
From:	"Chen, Kenneth W" <kenneth.w.chen@...el.com>
To:	"Andrew Morton" <akpm@...l.org>,
	"'Zach Brown'" <zach.brown@...cle.com>
Cc:	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: [patch] kill pointless ki_nbytes assignment in aio_setup_single_vector

io_submit_one assigns ki_left = ki_nbytes = iocb->aio_nbytes, then
calls down to aio_setup_iocb, then to aio_setup_single_vector. In there,
ki_nbytes is reassigned to the same value it got two call stack above it.
There is no need to do so.

Signed-off-by: Ken Chen <kenneth.w.chen@...el.com>


diff -Nurp linux-2.6.19/fs/aio.c linux-2.6.19.ken/fs/aio.c
--- linux-2.6.19/fs/aio.c	2006-12-03 17:16:52.000000000 -0800
+++ linux-2.6.19.ken/fs/aio.c	2006-12-03 17:19:06.000000000 -0800
@@ -1415,7 +1415,6 @@ static ssize_t aio_setup_single_vector(s
 	kiocb->ki_iovec->iov_len = kiocb->ki_left;
 	kiocb->ki_nr_segs = 1;
 	kiocb->ki_cur_seg = 0;
-	kiocb->ki_nbytes = kiocb->ki_left;
 	if (unlikely((ssize_t) kiocb->ki_nbytes < 0))
 		return -EINVAL;
 	return 0;

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/