Query: sync
OS: redhat
Section: 2
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
SYNC(2) Linux Programmer's Manual SYNC(2)NAMEsync - commit buffer cache to disk.SYNOPSIS#include <unistd.h> void sync(void);DESCRIPTIONsync first commits inodes to buffers, and then buffers to disk.CONFORMING TOSVr4, SVID, X/OPEN, BSD 4.3BUGSAccording to the standard specification (e.g., SVID), sync() schedules the writes, but may return before the actual writing is done. How- ever, since version 1.3.20 Linux does actually wait. (This still does not guarantee data integrity: modern disks have large caches.)NOTESSince 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 ALSObdflush(2), fsync(2), fdatasync(2), update(8), sync(8) Linux 2.4 2001-10-10 SYNC(2)
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