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Kernel: Make SharedInodeVMObject pages Bitmap allocation OOM-fallible

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This commit is contained in:
Idan Horowitz 2022-02-10 19:39:17 +02:00
parent 8030e2a88f
commit d9d3362722
6 changed files with 26 additions and 22 deletions
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14
Kernel/Memory/SharedInodeVMObject.cpp
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@ -16,7 +16,8 @@ ErrorOr<NonnullRefPtr<SharedInodeVMObject>> SharedInodeVMObject::try_create_with
if (auto shared_vmobject = inode.shared_vmobject())
return shared_vmobject.release_nonnull();
auto new_physical_pages = TRY(VMObject::try_create_physical_pages(size));
auto vmobject = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) SharedInodeVMObject(inode, move(new_physical_pages))));
auto dirty_pages = TRY(Bitmap::try_create(new_physical_pages.size(), false));
auto vmobject = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) SharedInodeVMObject(inode, move(new_physical_pages), move(dirty_pages))));
vmobject->inode().set_shared_vmobject(*vmobject);
return vmobject;
}
@ -24,16 +25,17 @@ ErrorOr<NonnullRefPtr<SharedInodeVMObject>> SharedInodeVMObject::try_create_with
ErrorOr<NonnullRefPtr<VMObject>> SharedInodeVMObject::try_clone()
{
auto new_physical_pages = TRY(this->try_clone_physical_pages());
return adopt_nonnull_ref_or_enomem<VMObject>(new (nothrow) SharedInodeVMObject(*this, move(new_physical_pages)));
auto dirty_pages = TRY(Bitmap::try_create(new_physical_pages.size(), false));
return adopt_nonnull_ref_or_enomem<VMObject>(new (nothrow) SharedInodeVMObject(*this, move(new_physical_pages), move(dirty_pages)));
}
SharedInodeVMObject::SharedInodeVMObject(Inode& inode, FixedArray<RefPtr<PhysicalPage>>&& new_physical_pages)
: InodeVMObject(inode, move(new_physical_pages))
SharedInodeVMObject::SharedInodeVMObject(Inode& inode, FixedArray<RefPtr<PhysicalPage>>&& new_physical_pages, Bitmap dirty_pages)
: InodeVMObject(inode, move(new_physical_pages), move(dirty_pages))
{
}
SharedInodeVMObject::SharedInodeVMObject(SharedInodeVMObject const& other, FixedArray<RefPtr<PhysicalPage>>&& new_physical_pages)
: InodeVMObject(other, move(new_physical_pages))
SharedInodeVMObject::SharedInodeVMObject(SharedInodeVMObject const& other, FixedArray<RefPtr<PhysicalPage>>&& new_physical_pages, Bitmap dirty_pages)
: InodeVMObject(other, move(new_physical_pages), move(dirty_pages))
{
}