Hi, I've read the various man pages and past discussions, so I think I already know the answer, but I just want some clarity from the experts: If I have a program that does open / mmap / memcpy / munmap there is no implied blocking writeback of the dirty pages at munmap, right? Even if the file was opened O_SYNC? In other words, if these events happen... (1) open w/O_SYNC (2) mmap some region (3) memcpy to dirty some pages (4) munmap the region (5) someone kills the power after the munmap completes successfully ...You can still see data corruption because the dirty pages may still have been dirty in page cache when the power went out. Correct? The same thing applies even if the file is closed before the power goes out, right? (All assuming no calls to msync). Regards, Bob Peterson -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
