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Add CoreInode::lookup() for directory lookups.

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Also add a name-to-inode lookup cache to Ext2Inode. This seems like a great
speedup for filesystem traversal.
This commit is contained in:
Andreas Kling 2018-11-15 16:34:36 +01:00
parent 8fa2d7104a
commit 5f434bc00b
Notes: sideshowbarker 2024-07-19 16:10:32 +09:00
7 changed files with 48 additions and 18 deletions
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7
VirtualFileSystem/VirtualFileSystem.cpp
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@ -525,7 +525,8 @@ InodeIdentifier VFS::resolve_path(const String& path, int& error, InodeIdentifie
return { };
}
auto parent = crumb_id;
crumb_id = crumb_id.fileSystem()->child_of_directory_inode_with_name(crumb_id, part);
auto dir_inode = get_inode(crumb_id);
crumb_id = dir_inode->lookup(part);
if (!crumb_id.isValid()) {
#ifdef VFS_DEBUG
kprintf("child <%s>(%u) not found in directory, %02u:%08u\n", part.characters(), part.length(), parent.fsid(), parent.index());
@ -547,8 +548,8 @@ InodeIdentifier VFS::resolve_path(const String& path, int& error, InodeIdentifie
kprintf(" -- is guest\n");
#endif
auto mount = find_mount_for_guest(crumb_id);
crumb_id = mount->host();
crumb_id = crumb_id.fileSystem()->child_of_directory_inode_with_name(crumb_id, "..");
auto dir_inode = get_inode(mount->host());
crumb_id = dir_inode->lookup("..");
}
metadata = crumb_id.metadata();
if (metadata.isSymbolicLink()) {