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Add an inode metadata cache to the ext2fs implementation.

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This commit is contained in:
Andreas Kling 2018-10-29 23:45:34 +01:00
parent 4259ffb080
commit 8e640539ef
7 changed files with 57 additions and 5 deletions
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7
VirtualFileSystem/Ext2FileSystem.h
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@ -19,6 +19,8 @@ private:
typedef unsigned BlockIndex;
typedef unsigned GroupIndex;
typedef unsigned InodeIndex;
class CachedExt2Inode;
class CachedExt2InodeImpl;
explicit Ext2FileSystem(RetainPtr<DiskDevice>&&);
@ -30,7 +32,7 @@ private:
unsigned blocksPerGroup() const;
unsigned inodeSize() const;
OwnPtr<ext2_inode> lookupExt2Inode(unsigned) const;
CachedExt2Inode lookupExt2Inode(unsigned) const;
bool writeExt2Inode(unsigned, const ext2_inode&);
ByteBuffer readBlockContainingInode(unsigned inode, unsigned& blockIndex, unsigned& offset) const;
@ -72,5 +74,8 @@ private:
mutable ByteBuffer m_cachedSuperBlock;
mutable ByteBuffer m_cachedBlockGroupDescriptorTable;
mutable SpinLock m_inodeCacheLock;
mutable HashMap<unsigned, RetainPtr<CachedExt2InodeImpl>> m_inodeCache;
};