FS locking and FD counting

First commit fixes a critical bug which can corrupt the file system.

Second commit fixes a bug which leads to failures when accessing more than one file concurrently (as it happens during boot).

changed milestone to %v1.15

added 0 - RELEASE BLOCKER label

added 2 commits

• 8894d590 - fix(fs_util): correctly lock fs when reading ble config
• 9b411213 - fix(fs): Actually count up FDs

Compare with previous version

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

merged

mentioned in commit 3b436505

mentioned in merge request !373 (merged)