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mirror of https://git.FreeBSD.org/src.git synced 2024-12-20 11:11:24 +00:00
freebsd/sys/nfsclient
Rick Macklem 64a0e848ab When an NFS unmount occurs, once vflush() writes the last dirty
buffer for the last vnode on the mount back to the server, it
returns. At that point, the code continues with the unmount,
including freeing up the nfs specific part of the mount structure.
It is possible that an nfsiod thread will try to check for an
empty I/O queue in the nfs specific part of the mount structure
after it has been free'd by the unmount. This patch avoids this problem by
setting the iodmount entries for the mount back to NULL while holding the
mutex in the unmount and checking the appropriate entry is non-NULL after
acquiring the mutex in the nfsiod thread.

Reported and tested by:	pho
Reviewed by:	kib
MFC after:	2 weeks
2013-04-18 23:20:16 +00:00
..
nfs_bio.c Both NFS clients can deadlock when using the "rdirplus" mount 2013-04-18 13:09:04 +00:00
nfs_kdtrace.c Fix the module dependency in nfs_kdtrace.c for the old NFS 2011-05-06 19:55:15 +00:00
nfs_krpc.c Further refine the handling of stop signals in the NFS client. The 2013-02-21 19:02:50 +00:00
nfs_nfsiod.c When an NFS unmount occurs, once vflush() writes the last dirty 2013-04-18 23:20:16 +00:00
nfs_node.c r16312 is not any longer real since many years (likely since when VFS 2012-11-19 22:43:45 +00:00
nfs_subs.c - Use m_get2() instead of nfsm_reqhead(). 2013-03-12 12:23:47 +00:00
nfs_vfsops.c When an NFS unmount occurs, once vflush() writes the last dirty 2013-04-18 23:20:16 +00:00
nfs_vnops.c Revert 195703 and 195821 as this special stop handling in NFS is now 2013-03-13 21:06:03 +00:00
nfs.h Fix a comment that got missed by r221973 which changed 2011-05-16 13:12:09 +00:00
nfsargs.h Move the NFSv4.1 client patches over from projects/nfsv4.1-client 2012-12-08 22:52:39 +00:00
nfsm_subs.h - Use m_get2() instead of nfsm_reqhead(). 2013-03-12 12:23:47 +00:00
nfsmount.h Revert 195703 and 195821 as this special stop handling in NFS is now 2013-03-13 21:06:03 +00:00
nfsnode.h PR# 165923 reported intermittent write failures for dirty 2012-05-12 12:02:51 +00:00
nfsstats.h
nlminfo.h