NAME    [Toc]    [Back]

       sync - commit buffer cache to disk.

SYNOPSIS    [Toc]    [Back]

       #include <unistd.h>

       int sync(void);

DESCRIPTION    [Toc]    [Back]

       sync first commits inodes to buffers, and then buffers to disk.

RETURN VALUE    [Toc]    [Back]

       sync always returns 0.

CONFORMING TO    [Toc]    [Back]

       SVr4, SVID, X/OPEN, BSD 4.3

BUGS    [Toc]    [Back]

       According  to the standard specification (e.g., SVID), sync() schedules
       the writes, but may return before the actual writing is done.  However,
       since  version  1.3.20  Linux does actually wait.  (This still does not
       guarantee data integrity: modern disks have large caches.)

SEE ALSO    [Toc]    [Back]

       bdflush(2), fsync(2), fdatasync(2), update(8), sync(8)



Linux 1.3.88			  1995-04-15			       SYNC(2)