c540bcb001
- Fix locking bug when unable to send DEV_SELECT request. Upon failure VFS tried to cancel the select operation, but this failed due to trying to lock a filp that was already locked to send the request in the first place. Do_select_request now handles locking of filps itself instead of relying on the caller to do it. This fixes a crash when killing INET. - Fix failure to revive a process after a non-blocking select operation yielded no ready select operations when replying DEV_SEL_REPL1. - Improve readability by using OK, SUSPEND, and standard error values as results instead of having separate macros in select. - Don't print not having a driver for a major device; after killing a driver select will trigger this printf.