Keep lock contention out of the error log

process_slot logged every failure to lock, so each request that found
its slot being filled left a line, while refresh_slot logged none, so an
expired slot in a directory the server cannot write was served stale for
good without a word. lock_slot now logs the step that failed, as the
scan does, and leaves out only another request at work.

0 files changed, 0 insertions, 0 deletions