Paul Saab d54d263a79 Serialize NFS vinvalbuf operations by acquiring/upgrading to the ... vnode EXCLUSIVE lock. This prevents threads from adding pages to the vnode while an invalidation is in progress, closing potential races. In the bioread() path, callers acquire the SHARED vnode lock - so while an invalidate was in progress, it was possible to fault in new pages onto the vnode causing the invalidation to take a while or fail. We saw these races at Yahoo! with very large files+heavy concurrent access. Forcing an upgrade to EXCLUSIVE lock before doing the invalidation closes all these races. Submitted by: Mohan Srinivasan mohans at yahoo-inc dot com		2004-12-06 18:52:28 +00:00
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bootp_subr.c	Convert a GIANT_REQUIRED; into a NET_ASSERT_GIANT();, as sockets are	2004-12-05 22:50:09 +00:00
krpc_subr.c
krpc.h
nfs_bio.c	Serialize NFS vinvalbuf operations by acquiring/upgrading to the	2004-12-06 18:52:28 +00:00
nfs_diskless.c
nfs_lock.c	For reasons unknown, the nfs locking code used a fifo to send requests to	2004-12-06 08:31:32 +00:00
nfs_lock.h	For reasons unknown, the nfs locking code used a fifo to send requests to	2004-12-06 08:31:32 +00:00
nfs_nfsiod.c	For reasons unknown, the nfs locking code used a fifo to send requests to	2004-12-06 08:31:32 +00:00
nfs_node.c	Serialize NFS vinvalbuf operations by acquiring/upgrading to the	2004-12-06 18:52:28 +00:00
nfs_socket.c
nfs_subs.c	Add non-blocking versions of nfsm_dissect() and friends, for use from	2004-12-06 17:33:52 +00:00
nfs_vfsops.c	Convert GIANT_REQUIRED; in nfs_mountroot() to NET_ASSERT_GIANT(),	2004-12-05 22:53:17 +00:00
nfs_vnops.c	Serialize NFS vinvalbuf operations by acquiring/upgrading to the	2004-12-06 18:52:28 +00:00
nfs.h	Correct a typo in a comment.	2004-12-06 16:11:25 +00:00
nfsargs.h
nfsdiskless.h
nfsm_subs.h
nfsmount.h
nfsnode.h	Serialize NFS vinvalbuf operations by acquiring/upgrading to the	2004-12-06 18:52:28 +00:00
nfsstats.h
nlminfo.h