Changeset 9befb0d in mainline for kernel/generic/src/ipc/ops/pagein.c

Timestamp:

2016-08-30T21:07:17Z (8 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

f126c87

Parents:

dd5f703

Message:

Increment reference count only for physical memory frames

File:

• kernel/generic/src/ipc/ops/pagein.c (modified) (1 diff)

kernel/generic/src/ipc/ops/pagein.c

@@ -54 +54 @@
                 if (pte) {
                         frame = PTE_GET_FRAME(pte);
-                        frame_reference_add(ADDR2PFN(frame));
+                        pfn_t pfn = ADDR2PFN(frame);
+                        if (find_zone(pfn, 1, 0) != (size_t) -1) {
+                                /*
+                                 * The frame is in physical memory managed by
+                                 * the frame allocator.
+                                 */
+                                frame_reference_add(ADDR2PFN(frame));
+                        }
                         IPC_SET_ARG1(answer->data, frame);
                 } else {