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SYNC(2)			   Linux Programmer's Manual		       SYNC(2)

NAME
       sync - commit buffer cache to disk.

SYNOPSIS
       #include	<unistd.h>

       void sync(void);

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

CONFORMING TO
       SVr4, SVID, X/OPEN, BSD 4.3

BUGS
       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.)

NOTES
       Since glibc 2.2.2 the Linux prototype is	as listed above, following the
       various	standards.  In libc4, libc5, and glibc up to 2.2.1 it was "int
       sync(void)", and	sync always returned 0.

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

Linux 2.4			  2001-10-10			       SYNC(2)

NAME | SYNOPSIS | DESCRIPTION | CONFORMING TO | BUGS | NOTES | SEE ALSO

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