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Kernel/DevFS: Remove some unnecessary inode locking

Browse source 
Unless we're accessing mutex-guarded metadata, there's no need to
acquire the inode lock.

The file system ID or inode index of a constructed inode will never
change, for example.
This commit is contained in:
Andreas Kling 2021-07-17 21:25:57 +02:00
parent 3b805a57e6
commit 9359f7801f
1 changed files with 5 additions and 6 deletions
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11
Kernel/FileSystem/DevFS.cpp
View file

@ -160,9 +160,9 @@ KResultOr<size_t> DevFSLinkInode::read_bytes(off_t offset, size_t, UserOrKernelB
return EFAULT;
return m_link.length();
}
InodeMetadata DevFSLinkInode::metadata() const
{
Locker locker(m_inode_lock);
InodeMetadata metadata;
metadata.inode = { fsid(), index() };
metadata.mode = S_IFLNK | 0555;
@ -172,6 +172,7 @@ InodeMetadata DevFSLinkInode::metadata() const
metadata.mtime = mepoch;
return metadata;
}
KResultOr<size_t> DevFSLinkInode::write_bytes(off_t offset, size_t count, const UserOrKernelBuffer& buffer, FileDescription*)
{
Locker locker(m_inode_lock);
@ -188,9 +189,9 @@ DevFSDirectoryInode::DevFSDirectoryInode(DevFS& fs)
DevFSDirectoryInode::~DevFSDirectoryInode()
{
}
InodeMetadata DevFSDirectoryInode::metadata() const
{
Locker locker(m_inode_lock);
InodeMetadata metadata;
metadata.inode = { fsid(), 1 };
metadata.mode = 0040555;
@ -202,14 +203,14 @@ InodeMetadata DevFSDirectoryInode::metadata() const
}
KResult DevFSDirectoryInode::traverse_as_directory(Function<bool(FileSystem::DirectoryEntryView const&)>) const
{
Locker locker(m_inode_lock);
return EINVAL;
}
RefPtr<Inode> DevFSDirectoryInode::lookup(StringView)
{
Locker locker(m_inode_lock);
return nullptr;
}
KResultOr<size_t> DevFSDirectoryInode::directory_entry_count() const
{
Locker locker(m_inode_lock);
@ -309,7 +310,6 @@ DevFSRootDirectoryInode::~DevFSRootDirectoryInode()
}
InodeMetadata DevFSRootDirectoryInode::metadata() const
{
Locker locker(m_parent_fs.m_lock);
InodeMetadata metadata;
metadata.inode = { fsid(), 1 };
metadata.mode = 0040555;
@ -407,7 +407,6 @@ DevFSPtsDirectoryInode::~DevFSPtsDirectoryInode()
}
InodeMetadata DevFSPtsDirectoryInode::metadata() const
{
Locker locker(m_inode_lock);
InodeMetadata metadata;
metadata.inode = { fsid(), index() };
metadata.mode = 0040555;