Date: Tue, 13 Jun 2006 15:55:08 -0400 From: Mikhail Teterin <mi+mx@aldan.algebra.com> To: current@freebsd.org Cc: jmg@freebsd.org Subject: EVFILT_VNODE vs. fstat() Message-ID: <200606131555.09143.mi%2Bmx@aldan.algebra.com>
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Hello! I have a program, that waits for the input file to be written to (using EVFILT_VNODE, fflags = NOTE_EXTEND) to process it. When kevent() returns upon the file's extension, the program calls fstat() to learn the new size of the file. Every once in a while, the fstat still reports the old size and my program goes into kevent() once again. Is this discrepancy "normal"? Thanks! -mi P.S. I would love to avoid having to call fstat() at all, but -- unlike EVFILT_READ -- the EVFILT_VNODE/NOTE_EXTEND does not place any additional results into the event's data :-( Using EVFILT_READ is not straigtforward either, because I mmap input, instead of read-ing it...
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