- enum cl_page_state old;
-
- /*
- * Matrix of allowed state transitions [old][new], for sanity
- * checking.
- */
- static const int allowed_transitions[CPS_NR][CPS_NR] = {
- [CPS_CACHED] = {
- [CPS_CACHED] = 0,
- [CPS_OWNED] = 1, /* io finds existing cached page */
- [CPS_PAGEIN] = 0,
- [CPS_PAGEOUT] = 1, /* write-out from the cache */
- [CPS_FREEING] = 1, /* eviction on the memory pressure */
- },
- [CPS_OWNED] = {
- [CPS_CACHED] = 1, /* release to the cache */
- [CPS_OWNED] = 0,
- [CPS_PAGEIN] = 1, /* start read immediately */
- [CPS_PAGEOUT] = 1, /* start write immediately */
- [CPS_FREEING] = 1, /* lock invalidation or truncate */
- },
- [CPS_PAGEIN] = {
- [CPS_CACHED] = 1, /* io completion */
- [CPS_OWNED] = 0,
- [CPS_PAGEIN] = 0,
- [CPS_PAGEOUT] = 0,
- [CPS_FREEING] = 0,
- },
- [CPS_PAGEOUT] = {
- [CPS_CACHED] = 1, /* io completion */
- [CPS_OWNED] = 0,
- [CPS_PAGEIN] = 0,
- [CPS_PAGEOUT] = 0,
- [CPS_FREEING] = 0,
- },
- [CPS_FREEING] = {
- [CPS_CACHED] = 0,
- [CPS_OWNED] = 0,
- [CPS_PAGEIN] = 0,
- [CPS_PAGEOUT] = 0,
- [CPS_FREEING] = 0,
- }
- };
-
- ENTRY;
- old = page->cp_state;
- PASSERT(env, page, allowed_transitions[old][state]);
- CL_PAGE_HEADER(D_TRACE, env, page, "%d -> %d\n", old, state);
- PASSERT(env, page, page->cp_state == old);
- PASSERT(env, page, equi(state == CPS_OWNED, page->cp_owner != NULL));
-
- CS_PAGESTATE_DEC(page->cp_obj, page->cp_state);
- CS_PAGESTATE_INC(page->cp_obj, state);
- cl_page_state_set_trust(page, state);
+ enum cl_page_state old;
+
+ /* Matrix of allowed state transitions [old][new] for sanity checking */
+ static const int allowed_transitions[CPS_NR][CPS_NR] = {
+ [CPS_CACHED] = {
+ [CPS_CACHED] = 0,
+ [CPS_OWNED] = 1, /* io finds existing cached page */
+ [CPS_PAGEIN] = 0,
+ [CPS_PAGEOUT] = 1, /* write-out from the cache */
+ [CPS_FREEING] = 1, /* eviction on the memory pressure */
+ },
+ [CPS_OWNED] = {
+ [CPS_CACHED] = 1, /* release to the cache */
+ [CPS_OWNED] = 0,
+ [CPS_PAGEIN] = 1, /* start read immediately */
+ [CPS_PAGEOUT] = 1, /* start write immediately */
+ [CPS_FREEING] = 1, /* lock invalidation or truncate */
+ },
+ [CPS_PAGEIN] = {
+ [CPS_CACHED] = 1, /* io completion */
+ [CPS_OWNED] = 0,
+ [CPS_PAGEIN] = 0,
+ [CPS_PAGEOUT] = 0,
+ [CPS_FREEING] = 0,
+ },
+ [CPS_PAGEOUT] = {
+ [CPS_CACHED] = 1, /* io completion */
+ [CPS_OWNED] = 0,
+ [CPS_PAGEIN] = 0,
+ [CPS_PAGEOUT] = 0,
+ [CPS_FREEING] = 0,
+ },
+ [CPS_FREEING] = {
+ [CPS_CACHED] = 0,
+ [CPS_OWNED] = 0,
+ [CPS_PAGEIN] = 0,
+ [CPS_PAGEOUT] = 0,
+ [CPS_FREEING] = 0,
+ }
+ };
+
+ ENTRY;
+ old = cl_page->cp_state;
+ PASSERT(env, cl_page, allowed_transitions[old][state]);
+ CL_PAGE_HEADER(D_TRACE, env, cl_page, "%d -> %d\n", old, state);
+ PASSERT(env, cl_page, cl_page->cp_state == old);
+ PASSERT(env, cl_page, equi(state == CPS_OWNED,
+ cl_page->cp_owner != NULL));
+
+ cs_pagestate_dec(cl_page->cp_obj, cl_page->cp_state);
+ cs_pagestate_inc(cl_page->cp_obj, state);
+ cl_page->cp_state = state;