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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-04-30 15:26:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 17:04:00 -0700
commit1e01c968db3d0aebd48e31db15f24516b03128df (patch)
tree6f8ebed201fdc426a6926b4a2235e8dd2538f025 /drivers
parent905cd0e1bf9ffe82d6906a01fd974ea0f70be97a (diff)
downloadlinux-1e01c968db3d0aebd48e31db15f24516b03128df.tar.gz
frontswap: make frontswap_init use a pointer for the ops
This simplifies the code in the frontswap - we can get rid of the 'backend_registered' test and instead check against frontswap_ops. [v1: Rebase on top of 703ba7fe5e0 (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')
-rw-r--r--drivers/staging/zcache/zcache-main.c8
-rw-r--r--drivers/xen/tmem.c6
2 files changed, 7 insertions, 7 deletions
diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache/zcache-main.c
index e23d814b539..09c69c8026f 100644
--- a/drivers/staging/zcache/zcache-main.c
+++ b/drivers/staging/zcache/zcache-main.c
@@ -1707,9 +1707,9 @@ static struct frontswap_ops zcache_frontswap_ops = {
.init = zcache_frontswap_init
};
-struct frontswap_ops zcache_frontswap_register_ops(void)
+struct frontswap_ops *zcache_frontswap_register_ops(void)
{
- struct frontswap_ops old_ops =
+ struct frontswap_ops *old_ops =
frontswap_register_ops(&zcache_frontswap_ops);
return old_ops;
@@ -1874,7 +1874,7 @@ static int __init zcache_init(void)
pr_warn("%s: cleancache_ops overridden\n", namestr);
}
if (zcache_enabled && !disable_frontswap) {
- struct frontswap_ops old_ops;
+ struct frontswap_ops *old_ops;
old_ops = zcache_frontswap_register_ops();
if (frontswap_has_exclusive_gets)
@@ -1886,7 +1886,7 @@ static int __init zcache_init(void)
namestr, frontswap_has_exclusive_gets,
!disable_frontswap_ignore_nonactive);
#endif
- if (old_ops.init != NULL)
+ if (old_ops != NULL)
pr_warn("%s: frontswap_ops overridden\n", namestr);
}
if (ramster_enabled)
diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c
index 3ee836d4258..7a01a5fd0f6 100644
--- a/drivers/xen/tmem.c
+++ b/drivers/xen/tmem.c
@@ -362,7 +362,7 @@ static int __init no_frontswap(char *s)
}
__setup("nofrontswap", no_frontswap);
-static struct frontswap_ops __initdata tmem_frontswap_ops = {
+static struct frontswap_ops tmem_frontswap_ops = {
.store = tmem_frontswap_store,
.load = tmem_frontswap_load,
.invalidate_page = tmem_frontswap_flush_page,
@@ -378,11 +378,11 @@ static int __init xen_tmem_init(void)
#ifdef CONFIG_FRONTSWAP
if (tmem_enabled && use_frontswap) {
char *s = "";
- struct frontswap_ops old_ops =
+ struct frontswap_ops *old_ops =
frontswap_register_ops(&tmem_frontswap_ops);
tmem_frontswap_poolid = -1;
- if (old_ops.init != NULL)
+ if (old_ops)
s = " (WARNING: frontswap_ops overridden)";
printk(KERN_INFO "frontswap enabled, RAM provided by "
"Xen Transcendent Memory%s\n", s);