In recent kernel, bdflush(2) syscall is deprecated and not effective to anything. Adding some statement about this situation to DESCRIPTION or NOTES section will be helpful for readers. I think affected pages are: bdflush(2) and syscalls(2) Best Regards,
The bdflush(2) man page has long carried this text: Note: Since Linux 2.6, this system call is deprecated and does nothing. It is likely to disappear altogether in a future ker‐ nel release. Nowadays, the task performed by bdflush() is han‐ dled by the kernel pdflush thread. As far as I can see, the system call still exists, at least for x86-32. If something further has changed (which exact recent kernel version, and, ideally a commit ID), please add this info to this bug.
I'm sorry for I missed the note. I close this bug. Thanks,