Rick Macklem 913df8fd72 A problem with the old NFS client where large writes to large files ... would sometimes result in a corrupted file was reported via email. This problem appears to have been caused by r251719 (reverting r251719 fixed the problem). Although I have not been able to reproduce this problem, I suspect it is caused by another thread increasing np->n_size after the mtx_unlock(&np->n_mtx) but before the vnode_pager_setsize() call. Since the np->n_mtx mutex serializes updates to np->n_size, doing the vnode_pager_setsize() with the mutex locked appears to avoid the problem. Unfortunately, vnode_pager_setsize() where the new size is smaller, cannot be called with a mutex held. This patch returns the semantics to be close to pre-r251719 such that the call to the vnode_pager_setsize() is only delayed until after the mutex is unlocked when np->n_size is shrinking. Since the file is growing when being written, I believe this will fix the corruption. Reported by: David G. Lawrence (dg@dglawrence.com) Tested by: David G. Lawrence (pending, to happen soon) Reviewed by: kib MFC after: 1 week		2013-07-04 00:54:23 +00:00
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nfs_bio.c
nfs_kdtrace.c
nfs_krpc.c
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
nfs_subs.c	A problem with the old NFS client where large writes to large files	2013-07-04 00:54:23 +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	A recent version of the oldnfs NFS client in head/current	2013-07-01 21:16:19 +00:00
nfs.h
nfsargs.h
nfsm_subs.h
nfsmount.h
nfsnode.h
nfsstats.h
nlminfo.h