SYNC Section: Linux Programmer's Manual (2) Updated: 15 April 2025 Index   NAME sync - commit buffer cache to disk.   SYNOPSIS #include <unistd.h> int sync(void);   DESCRIPTION sync first commits inodes to buffers, and then buffers to disk.   RETURN VALUE sync always returns 0.   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.)   SEE ALSO   Index NAME SYNOPSIS DESCRIPTION RETURN VALUE CONFORMING TO BUGS SEE ALSO This document was created by using the manual pages. Time: 11:56:07 GMT, March 24, 2025