diff options
| author | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-07-21 00:05:52 +0200 |
|---|---|---|
| committer | Justus Winter <4winter@informatik.uni-hamburg.de> | 2015-08-28 15:48:05 +0200 |
| commit | 35769e1d60121156b6a9d308cb9e32829147f056 (patch) | |
| tree | d8b9d8dfeb22026df15e41e28895d98b269236f9 | |
| parent | 51d95f2e41553890121a611852594ca4a74eb53e (diff) | |
yyy vm: destroy pages
| -rw-r--r-- | vm/vm_object.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/vm/vm_object.c b/vm/vm_object.c index 3b7506d..344ce5e 100644 --- a/vm/vm_object.c +++ b/vm/vm_object.c @@ -756,7 +756,7 @@ void memory_object_release( void vm_object_abort_activity( vm_object_t object) { - vm_page_t p; + vm_page_t p, old_p; assert(have_vm_object_lock(object)); @@ -770,6 +770,7 @@ void vm_object_abort_activity( */ struct rdxtree_iter iter; + old_p = NULL; rdxtree_for_each(&object->memt, &iter, p) { /* * If it's being paged in, destroy it. @@ -782,8 +783,16 @@ void vm_object_abort_activity( else { if (p->unlock_request != VM_PROT_NONE) p->unlock_request = VM_PROT_NONE; - PAGE_WAKEUP(p); + if (p == old_p) + /* We tried to wake this up last time. + We must assume this failed, and + destroy this page to avoid looping + forever. */ + VM_PAGE_FREE(p); + else + PAGE_WAKEUP(p); } + old_p = p; rdxtree_iter_init(&iter); } |