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Diffstat (limited to 'kernel/drivers/xen/tmem.c')
-rw-r--r--kernel/drivers/xen/tmem.c36
1 files changed, 11 insertions, 25 deletions
diff --git a/kernel/drivers/xen/tmem.c b/kernel/drivers/xen/tmem.c
index c4211a316..945fc4327 100644
--- a/kernel/drivers/xen/tmem.c
+++ b/kernel/drivers/xen/tmem.c
@@ -17,8 +17,8 @@
#include <xen/xen.h>
#include <xen/interface/xen.h>
+#include <xen/page.h>
#include <asm/xen/hypercall.h>
-#include <asm/xen/page.h>
#include <asm/xen/hypervisor.h>
#include <xen/tmem.h>
@@ -129,21 +129,17 @@ static int xen_tmem_new_pool(struct tmem_pool_uuid uuid,
/* xen generic tmem ops */
static int xen_tmem_put_page(u32 pool_id, struct tmem_oid oid,
- u32 index, unsigned long pfn)
+ u32 index, struct page *page)
{
- unsigned long gmfn = xen_pv_domain() ? pfn_to_mfn(pfn) : pfn;
-
return xen_tmem_op(TMEM_PUT_PAGE, pool_id, oid, index,
- gmfn, 0, 0, 0);
+ xen_page_to_gfn(page), 0, 0, 0);
}
static int xen_tmem_get_page(u32 pool_id, struct tmem_oid oid,
- u32 index, unsigned long pfn)
+ u32 index, struct page *page)
{
- unsigned long gmfn = xen_pv_domain() ? pfn_to_mfn(pfn) : pfn;
-
return xen_tmem_op(TMEM_GET_PAGE, pool_id, oid, index,
- gmfn, 0, 0, 0);
+ xen_page_to_gfn(page), 0, 0, 0);
}
static int xen_tmem_flush_page(u32 pool_id, struct tmem_oid oid, u32 index)
@@ -173,14 +169,13 @@ static void tmem_cleancache_put_page(int pool, struct cleancache_filekey key,
{
u32 ind = (u32) index;
struct tmem_oid oid = *(struct tmem_oid *)&key;
- unsigned long pfn = page_to_pfn(page);
if (pool < 0)
return;
if (ind != index)
return;
mb(); /* ensure page is quiescent; tmem may address it with an alias */
- (void)xen_tmem_put_page((u32)pool, oid, ind, pfn);
+ (void)xen_tmem_put_page((u32)pool, oid, ind, page);
}
static int tmem_cleancache_get_page(int pool, struct cleancache_filekey key,
@@ -188,7 +183,6 @@ static int tmem_cleancache_get_page(int pool, struct cleancache_filekey key,
{
u32 ind = (u32) index;
struct tmem_oid oid = *(struct tmem_oid *)&key;
- unsigned long pfn = page_to_pfn(page);
int ret;
/* translate return values to linux semantics */
@@ -196,7 +190,7 @@ static int tmem_cleancache_get_page(int pool, struct cleancache_filekey key,
return -1;
if (ind != index)
return -1;
- ret = xen_tmem_get_page((u32)pool, oid, ind, pfn);
+ ret = xen_tmem_get_page((u32)pool, oid, ind, page);
if (ret == 1)
return 0;
else
@@ -287,7 +281,6 @@ static int tmem_frontswap_store(unsigned type, pgoff_t offset,
{
u64 ind64 = (u64)offset;
u32 ind = (u32)offset;
- unsigned long pfn = page_to_pfn(page);
int pool = tmem_frontswap_poolid;
int ret;
@@ -296,7 +289,7 @@ static int tmem_frontswap_store(unsigned type, pgoff_t offset,
if (ind64 != ind)
return -1;
mb(); /* ensure page is quiescent; tmem may address it with an alias */
- ret = xen_tmem_put_page(pool, oswiz(type, ind), iswiz(ind), pfn);
+ ret = xen_tmem_put_page(pool, oswiz(type, ind), iswiz(ind), page);
/* translate Xen tmem return values to linux semantics */
if (ret == 1)
return 0;
@@ -313,7 +306,6 @@ static int tmem_frontswap_load(unsigned type, pgoff_t offset,
{
u64 ind64 = (u64)offset;
u32 ind = (u32)offset;
- unsigned long pfn = page_to_pfn(page);
int pool = tmem_frontswap_poolid;
int ret;
@@ -321,7 +313,7 @@ static int tmem_frontswap_load(unsigned type, pgoff_t offset,
return -1;
if (ind64 != ind)
return -1;
- ret = xen_tmem_get_page(pool, oswiz(type, ind), iswiz(ind), pfn);
+ ret = xen_tmem_get_page(pool, oswiz(type, ind), iswiz(ind), page);
/* translate Xen tmem return values to linux semantics */
if (ret == 1)
return 0;
@@ -381,21 +373,15 @@ static int __init xen_tmem_init(void)
#ifdef CONFIG_FRONTSWAP
if (tmem_enabled && frontswap) {
char *s = "";
- struct frontswap_ops *old_ops;
tmem_frontswap_poolid = -1;
- old_ops = frontswap_register_ops(&tmem_frontswap_ops);
- if (IS_ERR(old_ops) || old_ops) {
- if (IS_ERR(old_ops))
- return PTR_ERR(old_ops);
- s = " (WARNING: frontswap_ops overridden)";
- }
+ frontswap_register_ops(&tmem_frontswap_ops);
pr_info("frontswap enabled, RAM provided by Xen Transcendent Memory%s\n",
s);
}
#endif
#ifdef CONFIG_CLEANCACHE
- BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid));
+ BUILD_BUG_ON(sizeof(struct cleancache_filekey) != sizeof(struct tmem_oid));
if (tmem_enabled && cleancache) {
int err;