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Kernel: Include the dirty bits when cloning an InodeVMObject

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Now that (private) InodeVMObjects can be CoW-cloned on fork(), we need
to make sure we clone the dirty bits as well.
This commit is contained in:
Andreas Kling 2020-03-01 12:11:50 +01:00
parent 0ef83911d7
commit b614462079
1 changed files with 4 additions and 1 deletions
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5
Kernel/VM/InodeVMObject.cpp
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@ -41,7 +41,10 @@ InodeVMObject::InodeVMObject(Inode& inode, size_t size)
InodeVMObject::InodeVMObject(const InodeVMObject& other) InodeVMObject::InodeVMObject(const InodeVMObject& other)
: VMObject(other) : VMObject(other)
, m_inode(other.m_inode) , m_inode(other.m_inode)
, m_dirty_pages(page_count(), false)
{ {
for (size_t i = 0; i < page_count(); ++i)
m_dirty_pages.set(i, other.m_dirty_pages.get(i));
} }
InodeVMObject::~InodeVMObject() InodeVMObject::~InodeVMObject()
@ -51,7 +54,7 @@ InodeVMObject::~InodeVMObject()
size_t InodeVMObject::amount_clean() const size_t InodeVMObject::amount_clean() const
{ {
size_t count = 0; size_t count = 0;
ASSERT(page_count() == (size_t)m_dirty_pages.size()); ASSERT(page_count() == m_dirty_pages.size());
for (size_t i = 0; i < page_count(); ++i) { for (size_t i = 0; i < page_count(); ++i) {
if (!m_dirty_pages.get(i) && m_physical_pages[i]) if (!m_dirty_pages.get(i) && m_physical_pages[i])
++count; ++count;