bdflush(2) — Linux manual page

bdflush(2)                 System Calls Manual                 bdflush(2)

NAME         top

       bdflush - start, flush, or tune buffer-dirty-flush daemon

SYNOPSIS         top

       #include <sys/kdaemon.h>

       int bdflush(int func, long data);

DESCRIPTION         top

       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         top

       ENOSYS (this system call is unimplemented)

STANDARDS         top

       Linux.

HISTORY         top

       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.

SEE ALSO         top

       sync(1), fsync(2), sync(2)

COLOPHON         top

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Linux man-pages 6.10            2024-08-21                     bdflush(2)

Pages that refer to this page: fsync(2),  syscalls(2),  capabilities(7)

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