Make page_in_from_vnode 2x faster.

...by adding a new class called Ext2Inode that inherits CoreInode.
The idea is that a vnode will wrap a CoreInode rather than InodeIdentifier.
Each CoreInode subclass can keep whatever caches they like.

Right now, Ext2Inode caches the list of block indices since it can be very
expensive to retrieve.

1 files changed, 5 insertions, 0 deletions

diff --git a/VirtualFileSystem/SyntheticFileSystem.cpp b/VirtualFileSystem/SyntheticFileSystem.cpp
index 676aff6b80..8343ffb438 100644
--- a/VirtualFileSystem/SyntheticFileSystem.cpp
+++ b/VirtualFileSystem/SyntheticFileSystem.cpp
@@ -249,3 +249,8 @@ InodeIdentifier SyntheticFileSystem::findParentOfInode(InodeIdentifier inode) co
         return { };
     return (*it).value->parent;
 }
+
+RetainPtr<CoreInode> SyntheticFileSystem::get_inode(InodeIdentifier)
+{
+    return nullptr;
+}