Function Ext2FreeMcb

Ext4Fsd/memory.c:1535–1590

}

VOID
Ext2FreeMcb (IN PEXT2_VCB Vcb, IN PEXT2_MCB Mcb)
{
    PEXT2_MCB   Parent = Mcb->Parent;

    ASSERT(Mcb != NULL);

    ASSERT((Mcb->Identifier.Type == EXT2MCB) &&
           (Mcb->Identifier.Size == sizeof(EXT2_MCB)));

    if ((Mcb->Identifier.Type != EXT2MCB) ||
            (Mcb->Identifier.Size != sizeof(EXT2_MCB))) {
        return;
    }

    DEBUG(DL_INF, ( "Ext2FreeMcb: Mcb %wZ will be freed.\n", &Mcb->FullName));

    if (IsMcbSymLink(Mcb) && Mcb->Target) {
        Ext2DerefMcb(Mcb->Target);
    }

    if (FsRtlNumberOfRunsInLargeMcb(&Mcb->Extents)) {
        DEBUG(DL_EXT, ("List data extents for: %wZ\n", &Mcb->FullName));
        Ext2ListExtents(&Mcb->Extents);
    }
    FsRtlUninitializeLargeMcb(&(Mcb->Extents));
    if (FsRtlNumberOfRunsInLargeMcb(&Mcb->MetaExts)) {
        DEBUG(DL_EXT, ("List meta extents for: %wZ\n", &Mcb->FullName));
        Ext2ListExtents(&Mcb->MetaExts);
    }
    FsRtlUninitializeLargeMcb(&(Mcb->MetaExts));
    ClearLongFlag(Mcb->Flags, MCB_ZONE_INITED);

    if (Mcb->ShortName.Buffer) {
        DEC_MEM_COUNT(PS_MCB_NAME, Mcb->ShortName.Buffer,
                      Mcb->ShortName.MaximumLength);
        Ext2FreePool(Mcb->ShortName.Buffer, EXT2_FNAME_MAGIC);
    }

    if (Mcb->FullName.Buffer) {
        DEC_MEM_COUNT(PS_MCB_NAME, Mcb->FullName.Buffer,
                      Mcb->FullName.MaximumLength);
        Ext2FreePool(Mcb->FullName.Buffer, EXT2_FNAME_MAGIC);
    }

    /* free dentry */
    if (Mcb->de) {
        Ext2FreeEntry(Mcb->de);
    }

    Mcb->Identifier.Type = 0;
    Mcb->Identifier.Size = 0;

    ExFreeToNPagedLookasideList(&(Ext2Global->Ext2McbLookasideList), Mcb);
    DEC_MEM_COUNT(PS_MCB, Mcb, sizeof(EXT2_MCB));
}