linux-kernel - [PATCH 8/9] fs/ceph: Eliminate useless code

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:	Sat, 16 Jan 2010 17:00:10 +0100 (CET)
From:	Julia Lawall <julia@...u.dk>
To:	Sage Weil <sage@...dream.net>, ceph-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 8/9] fs/ceph: Eliminate useless code

From: Julia Lawall <julia@...u.dk>

The variable client is initialized twice to the same (side effect-free)
expression.  Drop one initialization.

A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)

// <smpl>
@forall@
idexpression *x;
identifier f!=ERR_PTR;
@@

x = f(...)
... when != x
(
x = f(...,<+...x...+>,...)
|
* x = f(...)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 fs/ceph/addr.c  |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index eab46b0..8686018 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -567,9 +567,9 @@ static int ceph_writepages_start(struct address_space *mapping,
 	struct inode *inode = mapping->host;
 	struct backing_dev_info *bdi = mapping->backing_dev_info;
 	struct ceph_inode_info *ci = ceph_inode(inode);
-	struct ceph_client *client = ceph_inode_to_client(inode);
+	struct ceph_client *client;
 	pgoff_t index, start, end;
 	int range_whole = 0;
 	int should_loop = 1;
--
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/