Date: Tue, 25 Oct 2011 21:38:29 GMT From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 200720 for review Message-ID: <201110252138.p9PLcTqn018964@skunkworks.freebsd.org>
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http://p4web.freebsd.org/@@200720?ac=10 Change 200720 by jhb@jhb_jhbbsd on 2011/10/25 21:38:07 Properly handle FADV_NORMAL clearing one end of a range when one edge of the FADV_NORMAL region matches the existing range exactly. Affected files ... .. //depot/projects/fadvise/sys/kern/vfs_syscalls.c#10 edit Differences ... ==== //depot/projects/fadvise/sys/kern/vfs_syscalls.c#10 (text+ko) ==== @@ -4934,6 +4934,12 @@ if (uap->offset <= fp->f_advstart && end >= fp->f_advend) fp->f_advice = FADV_NORMAL; + else if (uap->offset <= fp->f_advstart && + end >= fp->f_advstart) + fp->f_advstart = end + 1; + else if (uap->offset <= fp->f_advend && + end >= fp->f_advend) + fp->f_advend = uap->offset - 1; else if (uap->offset >= fp->f_advstart && end <= fp->f_advend) /* @@ -4945,12 +4951,6 @@ * preserve. */ fp->f_advice = FADV_NORMAL; - else if (uap->offset <= fp->f_advstart && - end >= fp->f_advstart) - fp->f_advstart = end + 1; - else if (uap->offset <= fp->f_advend && - end >= fp->f_advstart) - fp->f_advend = uap->offset - 1; } mtx_pool_unlock(mtxpool_sleep, fp); break;
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