Maximum number of filesystem operations in flight at once, shared across all
concurrent loadRange / walkdir calls on this adapter. Defaults to 100.
Remarks
Tie this to the process's file-descriptor ceiling (commonly 1024 on Linux,
256 on macOS), leaving headroom for everything else holding descriptors.
The default 100 is well under typical limits while still loading a
many-chunk document in parallel.
Maximum number of filesystem operations in flight at once, shared across all concurrent
loadRange/walkdircalls on this adapter. Defaults to 100.