Attilio Rao 89f6b8632c Switch the vm_object mutex to be a rwlock. This will enable in the ... future further optimizations where the vm_object lock will be held in read mode most of the time the page cache resident pool of pages are accessed for reading purposes. The change is mostly mechanical but few notes are reported: * The KPI changes as follow: - VM_OBJECT_LOCK() -> VM_OBJECT_WLOCK() - VM_OBJECT_TRYLOCK() -> VM_OBJECT_TRYWLOCK() - VM_OBJECT_UNLOCK() -> VM_OBJECT_WUNLOCK() - VM_OBJECT_LOCK_ASSERT(MA_OWNED) -> VM_OBJECT_ASSERT_WLOCKED() (in order to avoid visibility of implementation details) - The read-mode operations are added: VM_OBJECT_RLOCK(), VM_OBJECT_TRYRLOCK(), VM_OBJECT_RUNLOCK(), VM_OBJECT_ASSERT_RLOCKED(), VM_OBJECT_ASSERT_LOCKED() * The vm/vm_pager.h namespace pollution avoidance (forcing requiring sys/mutex.h in consumers directly to cater its inlining functions using VM_OBJECT_LOCK()) imposes that all the vm/vm_pager.h consumers now must include also sys/rwlock.h. * zfs requires a quite convoluted fix to include FreeBSD rwlocks into the compat layer because the name clash between FreeBSD and solaris versions must be avoided. At this purpose zfs redefines the vm_object locking functions directly, isolating the FreeBSD components in specific compat stubs. The KPI results heavilly broken by this commit. Thirdy part ports must be updated accordingly (I can think off-hand of VirtualBox, for example). Sponsored by: EMC / Isilon storage division Reviewed by: jeff Reviewed by: pjd (ZFS specific review) Discussed with: alc Tested by: pho		2013-03-09 02:32:23 +00:00
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default_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
device_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
memguard.c	Fix a bug with memguard(9) on 32-bit architectures without a	2012-07-15 20:29:48 +00:00
memguard.h	Fix a bug with memguard(9) on 32-bit architectures without a	2012-07-15 20:29:48 +00:00
phys_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
pmap.h	The page flag PGA_WRITEABLE is set and cleared exclusively by the pmap	2012-06-16 18:56:19 +00:00
redzone.c	Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.	2011-11-07 15:43:11 +00:00
redzone.h
sg_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
swap_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
swap_pager.h	Implement the linprocfs swaps file, providing information about the	2011-08-01 19:12:15 +00:00
uma_core.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
uma_dbg.c
uma_dbg.h
uma_int.h	Merge from vmc-playground branch:	2013-02-26 23:35:27 +00:00
uma.h	Merge from vmc-playground branch:	2013-02-26 23:35:27 +00:00
vm_extern.h	Eliminate vm_phys_bootstrap_alloc(). It was a failed attempt at	2011-10-30 05:06:14 +00:00
vm_fault.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_glue.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_init.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_kern.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_kern.h
vm_map.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_map.h	- Get rid of unused function vmspace_wired_count().	2013-01-14 12:12:56 +00:00
vm_meter.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_mmap.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_object.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_object.h	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_page.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_page.h	Update a comment to reflect the elimination of the hold queue in r242300.	2012-11-17 04:00:19 +00:00
vm_pageout.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_pageout.h	Move what remains of vm/vm_contig.c into vm/vm_pageout.c, where similar	2012-07-18 05:21:34 +00:00
vm_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_pager.h	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_param.h
vm_phys.c	Make VM_NDOMAIN a kernel option so that it can be enabled from a kernel	2013-02-14 19:38:04 +00:00
vm_phys.h	Move the declaration of vm_phys_paddr_to_vm_page() from vm/vm_page.h	2012-11-16 05:55:56 +00:00
vm_reserv.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vm_reserv.h	Introduce vm_reserv_alloc_contig() and teach vm_page_alloc_contig() how to	2011-12-05 18:29:25 +00:00
vm_unix.c	- Improve readability of sys_obreak().	2013-01-11 09:58:35 +00:00
vm_zeroidle.c
vm.h	- Fix locked memory accounting for maps with MAP_WIREFUTURE flag.	2012-12-18 07:35:01 +00:00
vnode_pager.c	Switch the vm_object mutex to be a rwlock. This will enable in the	2013-03-09 02:32:23 +00:00
vnode_pager.h	Account the writeable shared mappings backed by file in the vnode	2012-02-23 21:07:16 +00:00