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Kernel: Split VMObject into two classes: Anonymous- and InodeVMObject

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InodeVMObject is a VMObject with an underlying Inode in the filesystem.
AnonymousVMObject has no Inode.

I'm happy that InodeVMObject::inode() can now return Inode& instead of
VMObject::inode() return Inode*. :^)
This commit is contained in:
Andreas Kling 2019-08-07 18:06:17 +02:00
parent cb2d572a14
commit 6bdb81ad87
16 changed files with 286 additions and 200 deletions
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10
Kernel/VM/Region.cpp
View file

@ -1,13 +1,14 @@
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/Process.h>
#include <Kernel/Thread.h>
#include <Kernel/VM/AnonymousVMObject.h>
#include <Kernel/VM/InodeVMObject.h>
#include <Kernel/VM/MemoryManager.h>
#include <Kernel/VM/Region.h>
#include <Kernel/VM/VMObject.h>
Region::Region(const Range& range, const String& name, u8 access, bool cow)
: m_range(range)
, m_vmo(VMObject::create_anonymous(size()))
, m_vmo(AnonymousVMObject::create_with_size(size()))
, m_name(name)
, m_access(access)
, m_cow_map(Bitmap::create(m_vmo->page_count(), cow))
@ -17,7 +18,7 @@ Region::Region(const Range& range, const String& name, u8 access, bool cow)
Region::Region(const Range& range, RefPtr<Inode>&& inode, const String& name, u8 access, bool cow)
: m_range(range)
, m_vmo(VMObject::create_file_backed(move(inode)))
, m_vmo(InodeVMObject::create_with_inode(*inode))
, m_name(name)
, m_access(access)
, m_cow_map(Bitmap::create(m_vmo->page_count(), cow))
@ -48,8 +49,7 @@ Region::~Region()
bool Region::page_in()
{
ASSERT(m_page_directory);
ASSERT(!vmo().is_anonymous());
ASSERT(vmo().inode());
ASSERT(vmo().is_inode());
#ifdef MM_DEBUG
dbgprintf("MM: page_in %u pages\n", page_count());
#endif