Date: Wed, 27 Jan 2010 15:22:20 +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: <201001271522.o0RFMd2U067847@repoman.freebsd.org>
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rmacklem 2010-01-27 15:22:20 UTC
FreeBSD src repository
Modified files:
sys/nfsclient nfs.h nfs_bio.c nfs_nfsiod.c nfs_subs.c
nfs_vnops.c nfsnode.h
Log:
SVN rev 203072 on 2010-01-27 15:22:20Z by rmacklem
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
MFC after: 2 weeks
Revision Changes Path
1.111 +1 -1 src/sys/nfsclient/nfs.h
1.181 +3 -3 src/sys/nfsclient/nfs_bio.c
1.96 +13 -7 src/sys/nfsclient/nfs_nfsiod.c
1.165 +2 -2 src/sys/nfsclient/nfs_subs.c
1.325 +1 -1 src/sys/nfsclient/nfs_vnops.c
1.68 +14 -1 src/sys/nfsclient/nfsnode.h
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