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freebsd-nq/sys/vm
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Konstantin Belousov f08f7dca40 The OBJ_TMPFS flag of vm_object means that there is unreclaimed tmpfs 
vnode for the tmpfs node owning this object.  The flag is currently
used for two purposes.  First, it allows to correctly handle VV_TEXT
for tmpfs vnode when the ref count on the object is decremented to 1,
similar to vnode_pager_dealloc() for regular filesystems.  Second, it
prevents some operations, which are done on OBJT_SWAP vm objects
backing user anonymous memory, but are incorrect for the object owned
by tmpfs node.

The second kind of use of the OBJ_TMPFS flag is incorrect, since the
vnode might be reclaimed, which clears the flag, but vm object
operations must still be disallowed.

Introduce one more flag, OBJ_TMPFS_NODE, which is permanently set on
the object for VREG tmpfs node, and used instead of OBJ_TMPFS to test
whether vm object collapse and similar actions should be disabled.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:30:37 +00:00
..
_vm_radix.h On all the architectures, avoid to preallocate the physical memory 2013-08-09 11:28:55 +00:00
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 Initialize paddr to handle the case of zero size. 2014-03-12 16:38:55 +00:00
memguard.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
memguard.h Replace kernel virtual address space allocation with vmem. This provides 2013-08-07 06:21:20 +00:00
phys_pager.c The soft and hard busy mechanism rely on the vm object lock to work. 2013-08-09 11:11:11 +00:00
pmap.h Introduce pmap_unwire(). It will replace pmap_change_wiring(). There are 2014-07-06 17:42:38 +00:00
redzone.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
redzone.h
sg_pager.c Different consumers of the struct vm_page abuse pageq member to keep 2013-08-10 17:36:42 +00:00
swap_pager.c Add sysctl OIDs showing the actual size and capacity of the swap zone. 2014-04-26 12:18:17 +00:00
swap_pager.h Do not map the swap i/o pbufs if the geom provider for the swap 2013-03-19 14:39:27 +00:00
uma_core.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
uma_dbg.c - Add a per-zone lock for zones without kegs. 2013-06-20 19:08:12 +00:00
uma_dbg.h
uma_int.h Implement soft pressure on UMA cache bucket sizes. 2013-11-19 10:05:53 +00:00
uma.h Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized. 2014-02-10 19:59:46 +00:00
vm_extern.h Merge the following changes from projects/bhyve_npt_pmap: 2013-09-20 17:06:49 +00:00
vm_fault.c - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_glue.c - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_init.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_kern.c - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_kern.h - Add a statically allocated memguard arena since it is needed very early 2013-08-13 22:40:43 +00:00
vm_map.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_map.h Add MAP_EXCL flag for mmap(2). It should be combined with MAP_FIXED, 2014-06-19 05:00:39 +00:00
vm_meter.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_mmap.c Remove ia64. 2014-07-07 00:27:09 +00:00
vm_object.c The OBJ_TMPFS flag of vm_object means that there is unreclaimed tmpfs 2014-07-14 09:30:37 +00:00
vm_object.h The OBJ_TMPFS flag of vm_object means that there is unreclaimed tmpfs 2014-07-14 09:30:37 +00:00
vm_page.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_page.h - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
vm_pageout.c Remove ia64. 2014-07-07 00:27:09 +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 - Add a general purpose resource allocator, vmem, from NetBSD. It was 2013-06-28 03:51:20 +00:00
vm_pager.h - Add a general purpose resource allocator, vmem, from NetBSD. It was 2013-06-28 03:51:20 +00:00
vm_param.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_phys.c vm_phys: remove limitation on number of fictitious regions 2014-07-09 08:12:58 +00:00
vm_phys.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_radix.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm_radix.h Eliminate a redundant parameter to vm_radix_replace(). 2013-12-08 20:07:02 +00:00
vm_reserv.c Correct a bug in the management of the population map on big-endian 2014-06-11 16:11:12 +00:00
vm_reserv.h Refactor vm_page_alloc()'s interactions with vm_reserv_alloc_page() and 2013-05-12 16:50:18 +00:00
vm_unix.c Remove ia64. 2014-07-07 00:27:09 +00:00
vm_zeroidle.c Pull in r267961 and r267973 again. Fix for issues reported will follow. 2014-06-28 03:56:17 +00:00
vm.h rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
vnode_pager.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vnode_pager.h Account the writeable shared mappings backed by file in the vnode 2012-02-23 21:07:16 +00:00