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Diffstat (limited to 'drivers/xen/tmem.c')
-rw-r--r--drivers/xen/tmem.c24
1 files changed, 8 insertions, 16 deletions
diff --git a/drivers/xen/tmem.c b/drivers/xen/tmem.c
index 239738f944ba..945fc4327201 100644
--- a/drivers/xen/tmem.c
+++ b/drivers/xen/tmem.c
@@ -129,21 +129,17 @@ static int xen_tmem_new_pool(struct tmem_pool_uuid uuid,
129/* xen generic tmem ops */ 129/* xen generic tmem ops */
130 130
131static int xen_tmem_put_page(u32 pool_id, struct tmem_oid oid, 131static int xen_tmem_put_page(u32 pool_id, struct tmem_oid oid,
132 u32 index, unsigned long pfn) 132 u32 index, struct page *page)
133{ 133{
134 unsigned long gmfn = xen_pv_domain() ? pfn_to_mfn(pfn) : pfn;
135
136 return xen_tmem_op(TMEM_PUT_PAGE, pool_id, oid, index, 134 return xen_tmem_op(TMEM_PUT_PAGE, pool_id, oid, index,
137 gmfn, 0, 0, 0); 135 xen_page_to_gfn(page), 0, 0, 0);
138} 136}
139 137
140static int xen_tmem_get_page(u32 pool_id, struct tmem_oid oid, 138static int xen_tmem_get_page(u32 pool_id, struct tmem_oid oid,
141 u32 index, unsigned long pfn) 139 u32 index, struct page *page)
142{ 140{
143 unsigned long gmfn = xen_pv_domain() ? pfn_to_mfn(pfn) : pfn;
144
145 return xen_tmem_op(TMEM_GET_PAGE, pool_id, oid, index, 141 return xen_tmem_op(TMEM_GET_PAGE, pool_id, oid, index,
146 gmfn, 0, 0, 0); 142 xen_page_to_gfn(page), 0, 0, 0);
147} 143}
148 144
149static int xen_tmem_flush_page(u32 pool_id, struct tmem_oid oid, u32 index) 145static 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,
173{ 169{
174 u32 ind = (u32) index; 170 u32 ind = (u32) index;
175 struct tmem_oid oid = *(struct tmem_oid *)&key; 171 struct tmem_oid oid = *(struct tmem_oid *)&key;
176 unsigned long pfn = page_to_pfn(page);
177 172
178 if (pool < 0) 173 if (pool < 0)
179 return; 174 return;
180 if (ind != index) 175 if (ind != index)
181 return; 176 return;
182 mb(); /* ensure page is quiescent; tmem may address it with an alias */ 177 mb(); /* ensure page is quiescent; tmem may address it with an alias */
183 (void)xen_tmem_put_page((u32)pool, oid, ind, pfn); 178 (void)xen_tmem_put_page((u32)pool, oid, ind, page);
184} 179}
185 180
186static int tmem_cleancache_get_page(int pool, struct cleancache_filekey key, 181static 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,
188{ 183{
189 u32 ind = (u32) index; 184 u32 ind = (u32) index;
190 struct tmem_oid oid = *(struct tmem_oid *)&key; 185 struct tmem_oid oid = *(struct tmem_oid *)&key;
191 unsigned long pfn = page_to_pfn(page);
192 int ret; 186 int ret;
193 187
194 /* translate return values to linux semantics */ 188 /* translate return values to linux semantics */
@@ -196,7 +190,7 @@ static int tmem_cleancache_get_page(int pool, struct cleancache_filekey key,
196 return -1; 190 return -1;
197 if (ind != index) 191 if (ind != index)
198 return -1; 192 return -1;
199 ret = xen_tmem_get_page((u32)pool, oid, ind, pfn); 193 ret = xen_tmem_get_page((u32)pool, oid, ind, page);
200 if (ret == 1) 194 if (ret == 1)
201 return 0; 195 return 0;
202 else 196 else
@@ -287,7 +281,6 @@ static int tmem_frontswap_store(unsigned type, pgoff_t offset,
287{ 281{
288 u64 ind64 = (u64)offset; 282 u64 ind64 = (u64)offset;
289 u32 ind = (u32)offset; 283 u32 ind = (u32)offset;
290 unsigned long pfn = page_to_pfn(page);
291 int pool = tmem_frontswap_poolid; 284 int pool = tmem_frontswap_poolid;
292 int ret; 285 int ret;
293 286
@@ -296,7 +289,7 @@ static int tmem_frontswap_store(unsigned type, pgoff_t offset,
296 if (ind64 != ind) 289 if (ind64 != ind)
297 return -1; 290 return -1;
298 mb(); /* ensure page is quiescent; tmem may address it with an alias */ 291 mb(); /* ensure page is quiescent; tmem may address it with an alias */
299 ret = xen_tmem_put_page(pool, oswiz(type, ind), iswiz(ind), pfn); 292 ret = xen_tmem_put_page(pool, oswiz(type, ind), iswiz(ind), page);
300 /* translate Xen tmem return values to linux semantics */ 293 /* translate Xen tmem return values to linux semantics */
301 if (ret == 1) 294 if (ret == 1)
302 return 0; 295 return 0;
@@ -313,7 +306,6 @@ static int tmem_frontswap_load(unsigned type, pgoff_t offset,
313{ 306{
314 u64 ind64 = (u64)offset; 307 u64 ind64 = (u64)offset;
315 u32 ind = (u32)offset; 308 u32 ind = (u32)offset;
316 unsigned long pfn = page_to_pfn(page);
317 int pool = tmem_frontswap_poolid; 309 int pool = tmem_frontswap_poolid;
318 int ret; 310 int ret;
319 311
@@ -321,7 +313,7 @@ static int tmem_frontswap_load(unsigned type, pgoff_t offset,
321 return -1; 313 return -1;
322 if (ind64 != ind) 314 if (ind64 != ind)
323 return -1; 315 return -1;
324 ret = xen_tmem_get_page(pool, oswiz(type, ind), iswiz(ind), pfn); 316 ret = xen_tmem_get_page(pool, oswiz(type, ind), iswiz(ind), page);
325 /* translate Xen tmem return values to linux semantics */ 317 /* translate Xen tmem return values to linux semantics */
326 if (ret == 1) 318 if (ret == 1)
327 return 0; 319 return 0;