cifs: TCP_Server_Info diet
authorJeff Layton <jlayton@redhat.com>
Thu, 20 Jan 2011 18:36:50 +0000 (13:36 -0500)
committerSteve French <sfrench@us.ibm.com>
Thu, 20 Jan 2011 21:46:22 +0000 (21:46 +0000)
commitc3dccf48174e50668b7c63544ac8c60c07a45978
tree9197f69ef539330373d609b334bfdd67fd4aa207
parenta70307eeeb25b89f6b2baf3cf3f0cef83c96ba12
cifs: TCP_Server_Info diet

Remove fields that are completely unused, and rearrange struct
according to recommendations by "pahole".

Before:

/* size: 1112, cachelines: 18, members: 49 */
/* sum members: 1086, holes: 8, sum holes: 26 */
/* bit holes: 1, sum bit holes: 7 bits */
/* last cacheline: 24 bytes */

After:

/* size: 1072, cachelines: 17, members: 42 */
/* sum members: 1065, holes: 3, sum holes: 7 */
/* last cacheline: 48 bytes */

...savings of 40 bytes per struct on x86_64. 21 bytes by field removal,
and 19 by reorganizing to eliminate holes.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
fs/cifs/cifsglob.h
fs/cifs/cifssmb.c