lfs_file_open(O_CREAT), Error from lfs_dir_commit is hidden

[ujeropoc]

https://github.com/ARMmbed/littlefs/blob/494dd6673d008c03e3199b24af7bff0fe82017f1/lfs.c#L2366

lfs_dir_commit() returns an error, (LFS_ERR_IO in my case, because block write failed) and this is hidden behind a NAMETOOLONG which is completle wrong in this case.

[pavel-kirienko]

The same defect may also mask LFS_ERR_NOSPC when the capacity is exhausted, returning irrelevant NAMETOOLONG instead.

[ZanoZ]

Well, I hit on this wall at the same time . who can helps 8-(