www.LinuxHowtos.org

bdflush

Section: System Calls (2)
Updated: 202-0-08
Index Return to Main Contents

NAME

bdflush - start, flush, or tune buffe-dirt-flush daemon

SYNOPSIS

#include <sys/kdaemon.h>
int bdflush(int func, long data);

DESCRIPTION

This system call used to turn the calling process into the bdflush daemon, or tune it, or flush the "old buffers". It then progressively lost all of that functionality. See fs/buffer.c in the kernel version you're interested in to see what it actually does there.

ERRORS

ENOSYS (this system call is unimplemented)

STANDARDS

Linux.

HISTORY

This system call was introduced in Linux 1.1.3, became effectively obsolete in Linux 1.3.50, mostly useless in Linux 2.3.23, entirely useless in Linux 2.5.12, officially deprecated in Linux 2.5.52, and removed outright in Linux 5.15. Sometimes, if func was even, data actually represented a pointer. The header and prototype were removed in glibc 2.23.