Re: [ceph-devel] [PATCH] fs/ceph: Move a dereference below a NULL test

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, 21 Nov 2009, Julia Lawall wrote:

> From: Julia Lawall <julia@xxxxxxx>
> 
> If the NULL test is necessary, then the dereference should be moved below
> the NULL test.

I've applied this (and the previous patch) to the ceph tree.  

Thanks!
sage


> 
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/).
> 
> // <smpl>
> @@
> type T;
> expression E;
> identifier i,fld;
> statement S;
> @@
> 
> - T i = E->fld;
> + T i;
>   ... when != E
>       when != i
>   if (E == NULL) S
> + i = E->fld;
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@xxxxxxx>
> 
> ---
>  fs/ceph/osd_client.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff -u -p a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c
> --- a/fs/ceph/osd_client.c
> +++ b/fs/ceph/osd_client.c
> @@ -1244,11 +1244,12 @@ int ceph_osdc_writepages(struct ceph_osd
>  static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
>  {
>  	struct ceph_osd *osd = con->private;
> -	struct ceph_osd_client *osdc = osd->o_osdc;
> +	struct ceph_osd_client *osdc;
>  	int type = le16_to_cpu(msg->hdr.type);
>  
>  	if (!osd)
>  		return;
> +	osdc = osd->o_osdc;
>  
>  	switch (type) {
>  	case CEPH_MSG_OSD_MAP:
> 
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
> trial. Simplify your report design, integration and deployment - and focus on 
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Ceph-devel mailing list
> Ceph-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/ceph-devel
> 
> 
--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux