Date: Wed, 10 Feb 2010 16:16:50 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/nfsclient nfs.h nfs_bio.c nfs_nfsiod.c nfs_subs.c nfs_vnops.c nfsnode.h Message-ID: <201002101617.o1AGH0UR032523@repoman.freebsd.org>
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rmacklem 2010-02-10 16:16:50 UTC FreeBSD src repository Modified files: (Branch: RELENG_8) sys/nfsclient nfs.h nfs_bio.c nfs_nfsiod.c nfs_subs.c nfs_vnops.c nfsnode.h Log: SVN rev 203756 on 2010-02-10 16:16:50Z by rmacklem MFC: r203072 Fix a race that can occur when nfs nfsiod threads are being created. Without this patch it was possible for a different thread that calls nfs_asyncio() to snitch a newly created nfsiod thread that was intended for another caller of nfs_asyncio(), because the nfs_iod_mtx mutex was unlocked while the new nfsiod thread was created. This patch labels the newly created nfsiod, so that it is not taken by another caller of nfs_asyncio(). This is believed to fix the problem reported on the freebsd-stable email list under the subject: FreeBSD NFS client/Linux NFS server issue. Tested by: to DOT my DOT trociny AT gmail DOT com Reviewed by: jhb Revision Changes Path 1.110.2.2 +1 -1 src/sys/nfsclient/nfs.h 1.180.2.2 +3 -3 src/sys/nfsclient/nfs_bio.c 1.95.2.2 +13 -7 src/sys/nfsclient/nfs_nfsiod.c 1.163.2.3 +2 -2 src/sys/nfsclient/nfs_subs.c 1.318.2.8 +1 -1 src/sys/nfsclient/nfs_vnops.c 1.66.2.3 +14 -1 src/sys/nfsclient/nfsnode.h
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