rmacklem f24ecdf104 For software builds, the NFS client does many small ... synchronous (with FILE_SYNC) writes because non-contiguous byte ranges in the same buffer cache block are being written. This patch adds a new mount option "noncontigwr" which allows the non-contiguous byte ranges to be combined, with the dirty byte range becoming the superset of the bytes that are dirty, if the file has not been file locked. This reduces the number of writes significantly for software builds. The only case where this change might break existing applications is where an application is writing non-overlapping byte ranges within the same buffer cache block of a file from multiple clients concurrently. Since such an application would normally do file locking on the file, avoiding the byte range merge for files that have been file locked should be sufficient for most (maybe all?) cases. Submitted by: jhb (earlier version) Reviewed by: kib MFC after: 3 weeks		2013-12-07 23:05:59 +00:00
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nfs_bio.c	- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging	2013-11-25 07:38:45 +00:00
nfs_kdtrace.c
nfs_krpc.c	- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging	2013-11-25 07:38:45 +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	- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging	2013-11-25 07:38:45 +00:00
nfs_vfsops.c	The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare	2013-10-26 17:58:36 +00:00
nfs_vnops.c	- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging	2013-11-25 07:38:45 +00:00
nfs.h	Fix a comment that got missed by r221973 which changed	2011-05-16 13:12:09 +00:00
nfsargs.h	For software builds, the NFS client does many small	2013-12-07 23:05:59 +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