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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-05-01 02:26:57 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-01 04:04:01 +0400
commit833f8662af9659508afc3cb80f09138eade378e2 (patch)
treefffd8a1328c55a6ec8ac1159d1258e28d8ca7cec /drivers/xen/tmem.c
parent49a9ab815acb8379a2f5fd43abe40038821e8f87 (diff)
downloadlinux-833f8662af9659508afc3cb80f09138eade378e2.tar.xz
cleancache: Make cleancache_init use a pointer for the ops
Instead of using a backend_registered to determine whether a backend is enabled. This allows us to remove the backend_register check and just do 'if (cleancache_ops)' [v1: Rebase on top of b97c4b430b0a (ramster->zcache move] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/xen/tmem.c')
-rw-r--r--drivers/xen/tmem.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c
index 7a01a5fd0f63..fd79eab08368 100644
--- a/drivers/xen/tmem.c
+++ b/drivers/xen/tmem.c
@@ -236,7 +236,7 @@ static int __init no_cleancache(char *s)
}
__setup("nocleancache", no_cleancache);
-static struct cleancache_ops __initdata tmem_cleancache_ops = {
+static struct cleancache_ops tmem_cleancache_ops = {
.put_page = tmem_cleancache_put_page,
.get_page = tmem_cleancache_get_page,
.invalidate_page = tmem_cleancache_flush_page,
@@ -392,9 +392,9 @@ static int __init xen_tmem_init(void)
BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid));
if (tmem_enabled && use_cleancache) {
char *s = "";
- struct cleancache_ops old_ops =
+ struct cleancache_ops *old_ops =
cleancache_register_ops(&tmem_cleancache_ops);
- if (old_ops.init_fs != NULL)
+ if (old_ops)
s = " (WARNING: cleancache_ops overridden)";
printk(KERN_INFO "cleancache enabled, RAM provided by "
"Xen Transcendent Memory%s\n", s);