From: Chen, Kenneth W <kenneth.w.chen@intel.com>
Date: Thu, 7 Dec 2006 04:40:43 +0000 (-0800)
Subject: [PATCH] aio: kill pointless ki_nbytes assignment in aio_setup_single_vector
X-Git-Tag: v2.6.20-rc1~145^2^2~39
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=b62e8ec2ac580b47c11eb76e8852ac1ec7d617cd;p=linux-2.6-omap-h63xx.git

[PATCH] aio: 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@intel.com>
Acked-by: Zach Brown <zach.brown@oracle.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/aio.c b/fs/aio.c
index 13aa9298abf..f02ad2677fc 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1413,7 +1413,6 @@ static ssize_t aio_setup_single_vector(struct kiocb *kiocb)
 	kiocb->ki_iovec->iov_len = kiocb->ki_left;
 	kiocb->ki_nr_segs = 1;
 	kiocb->ki_cur_seg = 0;
-	kiocb->ki_nbytes = kiocb->ki_left;
 	return 0;
 }