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Kernel: Put all Regions on InlineLinkedLists (separated by user/kernel)

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Remove the global hash tables and replace them with InlineLinkedLists.
This significantly reduces the kernel heap pressure from doing many
small mmap()'s.
This commit is contained in:
Andreas Kling 2019-08-08 10:53:24 +02:00
parent a96d76fd90
commit 07425580a8
4 changed files with 14 additions and 8 deletions
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4
Kernel/VM/InodeVMObject.cpp
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@ -110,11 +110,11 @@ void VMObject::for_each_region(Callback callback)
{
// FIXME: Figure out a better data structure so we don't have to walk every single region every time an inode changes.
// Perhaps VMObject could have a Vector<Region*> with all of his mappers?
for (auto* region : MM.m_user_regions) {
for (auto* region = MM.m_user_regions.head(); region; region = region->next()) {
if (&region->vmo() == this)
callback(*region);
}
for (auto* region : MM.m_kernel_regions) {
for (auto* region = MM.m_kernel_regions.head(); region; region = region->next()) {
if (&region->vmo() == this)
callback(*region);
}