buffer - Guarantee disk cache was flushed with fsync -


i understand fsync system call moves dirty data kernel buffer cache (page cache) hdd. guarantee hard disk moved said data internal cache platter?

silly me, read documentation once again , states (redacted):

fsync() transfers ... modified in-core data of ... file referred file descriptor fd disk device ... changed information can retrieved after system crashed ... this includes writing through or flushing disk cache if present.


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