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hannken cafde4eb6a The path getnewvnode()->getcleanvnode()->vclean()->VOP_LOCK() will panic 
if the vnode we want to clean is a layered vnode and the caller already
locked its lower vnode.

Change getnewvnode() to always allocate a fresh vnode and add a helper
thread (vdrain) to keep the number of allocated vnodes within desiredvnodes.

Rename getcleanvnode() to cleanvnode() and let it take a vnode from the
lists, clean and free it.

Reviewed by: David Holland <dholland@netbsd.org>

Should fix:
PR #19110 (nullfs mounts over NFS cause lock manager problems)
PR #34102 (ffs panic in NetBSD 3.0_STABLE)
PR #45115 (lock error panic when build.sh*3 and daily script is running)
PR #45355 (Reader/writer lock error:  rw_vector_enter: locking against myself)
2011-10-02 13:00:06 +00:00
bin csh has no business using TTYHOG 2011-09-24 14:44:11 +00:00
common Fix an implementation inconsistency with the prop_*_send_syscall() and 2011-09-30 22:08:18 +00:00
compat build compat versions of libgomp for everything except mips N64 (for now.) 2011-09-23 06:44:36 +00:00
crypto Sort sections. 2011-09-23 16:22:00 +00:00
dist Work around PR#43839, by calling resizeterm() on SIGWINCH. 2011-09-24 18:57:46 +00:00
distrib Build iic(4) and gpioiic(4) as modules. 2011-10-02 12:13:08 +00:00
doc mention new binutils 2011-09-25 04:31:45 +00:00
etc mention kern.tty.qsize requested by Matthew Mondor. 2011-09-25 21:47:22 +00:00
external The arm .arm.atpcs section does not have segment information, so skip it. 2011-10-01 19:25:24 +00:00
extsrc
games reinstate NULL cast by request, where the NULL was being passed as a vararg 2011-09-01 07:18:50 +00:00
gnu Disable rebuilding files in the source tree. 2011-09-10 20:35:42 +00:00
include Define _PATH_CPUCTL. 2011-09-27 11:24:20 +00:00
lib don't use %edi! 2011-09-30 23:45:41 +00:00
libexec match EXIT() with LEAF_ENTRY() so that sizes are actually constants. 2011-09-30 03:05:43 +00:00
regress provide the out of address space test in a gcc-4.5 friendly way. 2011-08-18 02:32:32 +00:00
rescue Update location of "less" directory. 2011-07-03 22:05:01 +00:00
sbin Fix typo 2011-10-01 02:55:00 +00:00
share It's actually 'the flag locator', not 'flags' (as 'flags' can not be used 2011-10-02 12:43:52 +00:00
sys The path getnewvnode()->getcleanvnode()->vclean()->VOP_LOCK() will panic 2011-10-02 13:00:06 +00:00
tests add a missing E 2011-10-01 21:47:08 +00:00
tools remove pre-gcc-4.5 mknative remnants that have long ceased to function. 2011-09-26 21:16:14 +00:00
usr.bin Describe the output more accurately, and in the correct order. Noted by 2011-10-02 01:51:00 +00:00
usr.sbin It's actually 'the flag locator', not 'flags' (as 'flags' can not be used 2011-10-02 12:43:52 +00:00
x11 Use find .${X11FONTDIR}, not find ./${X11FONTDIR}, because ${X11FONTDIR} 2011-09-12 13:38:42 +00:00
build.sh When using random versions of make to try to find the TOOLDIR, 2011-09-14 17:35:44 +00:00
BUILDING Add tests for the shell under which build.sh is run. If the 2011-09-09 18:48:34 +00:00
Makefile Move the code for creating src/BUILDING from "make build-docs" in 2011-09-09 14:23:37 +00:00
Makefile.inc
UPDATING Inform that the prop_{array,dictionary}_send_syscall(3) change breaks 2011-09-30 22:17:50 +00:00