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Ext2FS: Make Ext2FSInode::is_directory() fast

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This patch overloads Inode::is_directory() with a faster version that
doesn't require instantiating the whole InodeMetadata.

If you have an Ext2FSInode&, calling is_directory() should be instant
since we can just look directly at the raw inode bits.
This commit is contained in:
Andreas Kling 2019-10-02 13:37:44 +02:00
parent d553bae749
commit 5ab044beae
2 changed files with 2 additions and 1 deletions
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2
Kernel/FileSystem/Ext2FileSystem.cpp
View file

@ -802,7 +802,7 @@ ssize_t Ext2FSInode::write_bytes(off_t offset, ssize_t count, const u8* data, Fi
bool Ext2FSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)> callback) const
{
LOCKER(m_lock);
ASSERT(metadata().is_directory());
ASSERT(is_directory());
#ifdef EXT2_DEBUG
kprintf("Ext2Inode::traverse_as_directory: inode=%u:\n", index());

1
Kernel/FileSystem/Ext2FileSystem.h
View file

@ -19,6 +19,7 @@ public:
size_t size() const { return m_raw_inode.i_size; }
bool is_symlink() const { return ::is_symlink(m_raw_inode.i_mode); }
bool is_directory() const { return ::is_directory(m_raw_inode.i_mode); }
// ^Inode (RefCounted magic)
virtual void one_ref_left() override;