Date: Wed, 27 Nov 2019 18:52:02 +0000 (UTC) From: Vincenzo Maffione <vmaffione@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r355133 - stable/12/sys/net Message-ID: <201911271852.xARIq2lD053228@repo.freebsd.org>
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Author: vmaffione Date: Wed Nov 27 18:52:01 2019 New Revision: 355133 URL: https://svnweb.freebsd.org/changeset/base/355133 Log: MFC r354867: netmap: check if we already ran mmap before we attempt it Submitted by: neel@neelc.org Reviewed by: vmaffione Differential Revision: https://reviews.freebsd.org/D22390 Modified: stable/12/sys/net/netmap_user.h Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/net/netmap_user.h ============================================================================== --- stable/12/sys/net/netmap_user.h Wed Nov 27 16:52:46 2019 (r355132) +++ stable/12/sys/net/netmap_user.h Wed Nov 27 18:52:01 2019 (r355133) @@ -981,7 +981,8 @@ nm_close(struct nm_desc *d) static int nm_mmap(struct nm_desc *d, const struct nm_desc *parent) { - //XXX TODO: check if mmap is already done + if (d->done_mmap) + return 0; if (IS_NETMAP_DESC(parent) && parent->mem && parent->req.nr_arg2 == d->req.nr_arg2) {
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