Changeset 9befb0d in mainline


Ignore:
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

Location:
kernel/generic/src
Files:
2 edited

Legend:

Unmodified
Added
Removed

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

    rdd5f703 r9befb0d  
    5454                if (pte) {
    5555                        frame = PTE_GET_FRAME(pte);
    56                         frame_reference_add(ADDR2PFN(frame));
     56                        pfn_t pfn = ADDR2PFN(frame);
     57                        if (find_zone(pfn, 1, 0) != (size_t) -1) {
     58                                /*
     59                                 * The frame is in physical memory managed by
     60                                 * the frame allocator.
     61                                 */
     62                                frame_reference_add(ADDR2PFN(frame));
     63                        }
    5764                        IPC_SET_ARG1(answer->data, frame);
    5865                } else {

  • kernel/generic/src/mm/backend_user.c

    rdd5f703 r9befb0d  
    153153         * A successful reply will contain the physical frame in ARG1.
    154154         * The physical frame will have the reference count already
    155          * incremented.
     155         * incremented (if applicable).
    156156         */
    157157
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