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b3e12dcece
When a <gpu> node is present in the VFS, the plugin opens a Gpu::Connection for each open call to the 'gpu' node and installs a completion signal handler. A read only to the fd returned only comes back if a completion signal has been received between two read transctions to the fd. For now the Gpu::Connections can be retrieved by calling the 'vfs_gpu_connection(unsigned long id)' function. The id can be obtained using 'stat' on the 'gpu' device and is located in the inode (st_ino) field of the stat buffer. issue #4380