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* Allow consumer to customize physical pager.Konstantin Belousov2020-09-091-0/+1
| | | | | | | | | | | | | | | | | | | | | | Add support for user-supplied callbacks into phys pager operations, providing custom getpages(), haspage(), and populate() methods implementations. Pager stores user data ptr/val in the object to provide context. Add phys_pager_allocate() helper that takes user ops table as one of the arguments. Current code for these methods is moved to the 'default' ops table, assigned automatically when vm_pager_alloc() is used. Reviewed by: markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D24652 Notes: svn path=/head/; revision=365488
* vm_object_split(): Handle orig_object type changes.Mark Johnston2020-09-071-3/+17
| | | | | | | | | | | | | | | | | | | | | orig_object->type can change from OBJT_DEFAULT to OBJT_SWAP while vm_object_split() is sleeping. In this case some pages in new_object may be left unbusied, but vm_object_split() attempts to unbusy all of them. Track the beginning of the busied range. Add an assertion to verify that pages are not re-added to the source object while sleeping. Reported by: Olympios Petrakis <olympios.petrakis@netapp.com> Reviewed by: alc, kib Tested by: pho MFC after: 1 week Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. Differential Revision: https://reviews.freebsd.org/D26223 Notes: svn path=/head/; revision=365437
* vm: clean up empty lines in .c and .h filesMateusz Guzik2020-09-011-4/+1
| | | | Notes: svn path=/head/; revision=365074
* cache: drop the always curthread argument from reverse lookup routinesMateusz Guzik2020-08-241-1/+1
| | | | | | | | | Note VOP_VPTOCNP keeps getting it as temporary compatibility for zfs. Tested by: pho Notes: svn path=/head/; revision=364633
* vm_object: allow paging_in_progress to be acquired after object termination.Konstantin Belousov2020-08-161-7/+8
| | | | | | | | | | | | | | | | | | | | | The vm objects are type-stable, and can be accessed even after the last reference is dropped, or in case of vnode objects, after vgone() destroyed it as well. Stop asserting that pip == 0 after vm_object_terminate() waited for existing owners to drop it, we only want to drain them before setting OBJ_DEAD flag. Also stop asserting pip == 0 in object destructor. Update comments explaining the interaction between paging_in_progress and termination. Reviewed by: markj Tested by: pho Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D25968 Notes: svn path=/head/; revision=364286
* Call swap_pager_freespace() from vm_object_page_remove().Mark Johnston2020-06-251-3/+6
| | | | | | | | | | | | | | | | | All vm_object_page_remove() callers, except linux_invalidate_mapping_pages() in the LinuxKPI, free swap space when removing a range of pages from an object. The LinuxKPI case appears to be an unintentional omission that could result in leaked swap blocks, so unconditionally free swap space in vm_object_page_remove() to protect against similar bugs in the future. Reviewed by: alc, kib Tested by: pho Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D25329 Notes: svn path=/head/; revision=362613
* Revert r362360.Mark Johnston2020-06-191-0/+1
| | | | | | | | | | This commit was simply wrong since two different objects are locked. Reported by: lwhsu, pho Pointy hat: markj Notes: svn path=/head/; revision=362371
* Fix a double object unlock in vm_object_backing_collapse_wait().Mark Johnston2020-06-191-1/+0
| | | | | | | | | Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D25327 Notes: svn path=/head/; revision=362360
* Honor db_pager_quit in some vm_object ddb commandsEric van Gyzen2020-06-121-0/+5
| | | | | | | | | | These can be rather verbose. MFC after: 2 weeks Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=362126
* Use COUNTER_U64_DEFINE_EARLY() in places where it simplifies things.Mark Johnston2020-03-061-13/+3
| | | | | | | | | Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D23978 Notes: svn path=/head/; revision=358716
* Simplify vref() code in object_reference. The local temporary is no longerJeff Roberson2020-02-281-8/+4
| | | | | | | | | | necessary. Fix formatting errors. Reported by: mjg Discussed with: kib Notes: svn path=/head/; revision=358444
* Add a blocking counter KPI.Mark Johnston2020-02-281-27/+24
| | | | | | | | | | | | | | | | | | | | refcount(9) was recently extended to support waiting on a refcount to drop to zero, as this was needed for a lockless VM object paging-in-progress counter. However, this adds overhead to all uses of refcount(9) and doesn't really match traditional refcounting semantics: once a counter has dropped to zero, the protected object may be freed at any point and it is not safe to dereference the counter. This change removes that extension and instead adds a new set of KPIs, blockcount_*, for use by VM object PIP and busy. Reviewed by: jeff, kib, mjg Tested by: pho Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D23723 Notes: svn path=/head/; revision=358432
* Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki2020-02-261-1/+1
| | | | | | | | | | | | | | | | | | | r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718 Notes: svn path=/head/; revision=358333
* sys/vm: quiet -Wwrite-stringsRyan Libby2020-02-231-3/+3
| | | | | | | | | Discussed with: kib Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D23796 Notes: svn path=/head/; revision=358256
* Enable vm_object_mightbedirty() and vm_object_page_clean() for swapKonstantin Belousov2020-02-041-27/+39
| | | | | | | | | | | | | | | | | | | | objects backing tmpfs vnodes data. The clean scan is limited to only remove write permissions from the mapped pages of the objects. This fixes the issue that tmpfs vnode mtime is not updated from writes to the mmaped area after the initial page-in. Noted by: mjg Reviewed by: markj Discussed with: jeff Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D23432 Notes: svn path=/head/; revision=357514
* Handle a race of collapse with a retrying fault.Konstantin Belousov2020-01-241-10/+38
| | | | | | | | | | | | | | Both vm_object_scan_all_shadowed() and vm_object_collapse_scan() might observe an invalid page left in the default backing object by the fault handler that retried. Check for the condition and refuse to collapse. Reported and tested by: pho Reviewed by: jeff Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D23331 Notes: svn path=/head/; revision=357091
* Make collapse synchronization more explicit and allow it to complete duringJeff Roberson2020-01-191-259/+312
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | paging. Shadow objects are marked with a COLLAPSING flag while they are collapsing with their backing object. This gives us an explicit test rather than overloading paging-in-progress. While split is on-going we mark an object with SPLIT. These two operations will modify the swap tree so they must be serialized and swap_pager_getpages() can now directly detect these conditions and page more conservatively. Callers to vm_object_collapse() now will reliably wait for a collapse to finish so that the backing chain is as short as possible before other decisions are made that may inflate the object chain. For example, split, coalesce, etc. It is now safe to run fault concurrently with collapse. It is safe to increase or decrease paging in progress with no lock so long as there is another valid ref on increase. This change makes collapse more reliable as a secondary benefit. The primary benefit is making it safe to drop the object lock much earlier in fault or never acquire it at all. This was tested with a new shadow chain test script that uncovered long standing bugs and will be integrated with stress2. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D22908 Notes: svn path=/head/; revision=356886
* Fix a long standing bug that was made worse in r355765. When we are cowing aJeff Roberson2020-01-171-2/+9
| | | | | | | | | | | | | | | | page that was previously mapped read-only it exists in pmap until pmap_enter() returns. However, we held no reference to the original page after the copy was complete. This allowed vm_object_scan_all_shadowed() to collapse an object that still had pages mapped. To resolve this, add another page pointer to the faultstate so we can keep the page xbusy until we're done with pmap_enter(). Handle busy pages in scan_all_shadowed. This is already done in vm_object_collapse_scan(). Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D23155 Notes: svn path=/head/; revision=356822
* vfs: drop the mostly unused flags argument from VOP_UNLOCKMateusz Guzik2020-01-031-1/+1
| | | | | | | | | | | Filesystems which want to use it in limited capacity can employ the VOP_UNLOCK_FLAGS macro. Reviewed by: kib (previous version) Differential Revision: https://reviews.freebsd.org/D21427 Notes: svn path=/head/; revision=356337
* Remove page locking for queue operations.Mark Johnston2019-12-281-7/+0
| | | | | | | | | | | | | | | | With the previous reviews, the page lock is no longer required in order to perform queue operations on a page. It is also no longer needed in the page queue scans. This change effectively eliminates remaining uses of the page lock and also the false sharing caused by multiple pages sharing a page lock. Reviewed by: jeff Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D22885 Notes: svn path=/head/; revision=356157
* Make page busy state deterministic on free. Pages must be xbusy whenJeff Roberson2019-12-221-8/+0
| | | | | | | | | | | | | | | | | | | removed from objects including calls to free. Pages must not be xbusy when freed and not on an object. Strengthen assertions to match these expectations. In practice very little code had to change busy handling to meet these rules but we can now make stronger guarantees to busy holders and avoid conditionally dropping busy in free. Refine vm_page_remove() and vm_page_replace() semantics now that we have stronger guarantees about busy state. This removes redundant and potentially problematic code that has proliferated. Discussed with: markj Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D22822 Notes: svn path=/head/; revision=356002
* Previously we did not support invalid pages in default objects. This meansJeff Roberson2019-12-151-2/+24
| | | | | | | | | | | | | | | | | | that if fault fails to progress and needs to restart the loop it must free the page it is working on and allocate again on restart. Resolve the few places that need to be modified to support this condition and simply deactivate the page. Presently, we only permit this when fault restarts for busy contention. This has an added benefit of removing some object trylocking in this case. While here consolidate some page cleanup logic into fault_page_free() and fault_page_release() to reduce redundant code and automate some teardown. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D22653 Notes: svn path=/head/; revision=355766
* Introduce vm_page_astate.Mark Johnston2019-12-101-3/+3
| | | | | | | | | | | | | | | | | This is a 32-bit structure embedded in each vm_page, consisting mostly of page queue state. The use of a structure makes it easy to store a snapshot of a page's queue state in a stack variable and use cmpset loops to update that state without requiring the page lock. This change merely adds the structure and updates references to atomic state fields. No functional change intended. Reviewed by: alc, jeff, kib Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D22650 Notes: svn path=/head/; revision=355586
* Do not assert that the object lock is held in vm_object_set_writeable_dirty.Jeff Roberson2019-12-081-2/+0
| | | | | | | | | | | A valid reference is all that is required. If we race with a deallocation we will harmlessly misidentify the type of an already dead object. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D22636 Notes: svn path=/head/; revision=355514
* Store the bottom of the shadow chain in OBJ_ANON object->handle member.Konstantin Belousov2019-12-011-34/+52
| | | | | | | | | | | | | | | | | | | | The handle value is stable for all shadow objects in the inheritance chain. This allows to avoid descending the shadow chain to get to the bottom of it in vm_map_entry_set_vnode_text(), and eliminate corresponding object relocking which appeared to be contending. Change vm_object_allocate_anon() and vm_object_shadow() to handle more of the cred/charge initialization for the new shadow object, in addition to set up the handle. Reported by: jeff Reviewed by: alc (previous version), jeff (previous version) Tested by: pho Sponsored by: The FreeBSD Foundation Differrential revision: https://reviews.freebsd.org/D22541 Notes: svn path=/head/; revision=355270
* Fix a perf regression from r355122. We can use a shared lock to drop theJeff Roberson2019-11-291-11/+22
| | | | | | | | | | last ref on vnodes. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D22565 Notes: svn path=/head/; revision=355215
* Use atomics in more cases for object references. We now can completelyJeff Roberson2019-11-271-19/+36
| | | | | | | | | | | omit the object lock if we are above a certain threshold. Hold only a single vnode reference when the vnode object has any ref > 0. This allows us to only lock the object and vnode on 0-1 and 1-0 transitions. Differential Revision: https://reviews.freebsd.org/D22452 Notes: svn path=/head/; revision=355122
* vm_object_collapse_scan_wait: drop locks before reacquiringRyan Libby2019-11-251-0/+2
| | | | | | | | | | | | Regression from r352174. In the vm_page_rename() failure case we forgot to unlock the vm object locks before sleeping and reacquiring them. Reviewed by: jeff Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D22542 Notes: svn path=/head/; revision=355084
* Ignore object->handle for OBJ_ANON objects.Konstantin Belousov2019-11-241-19/+13
| | | | | | | | | | | | | Note that the change in vm_object_collapse() is arguably a correctness fix. We must not collapse into content-identity carrying objects. Reviewed by: jeff Tested by: pho Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D22467 Notes: svn path=/head/; revision=355064
* Only keep anonymous objects on shadow lists. This eliminates locking ofJeff Roberson2019-11-201-55/+104
| | | | | | | | | | globally visible objects when they are part of a backing chain. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D22423 Notes: svn path=/head/; revision=354871
* Simplify anonymous memory handling with an OBJ_ANON flag. This eliminatesJeff Roberson2019-11-191-66/+79
| | | | | | | | | | | | | | | reudundant complicated checks and additional locking required only for anonymous memory. Introduce vm_object_allocate_anon() to create these objects. DEFAULT and SWAP objects now have the correct settings for non-anonymous consumers and so individual consumers need not modify the default flags to create super-pages and avoid ONEMAPPING/NOSPLIT. Reviewed by: alc, dougm, kib, markj Tested by: pho Differential Revision: https://reviews.freebsd.org/D22119 Notes: svn path=/head/; revision=354869
* Replace OBJ_MIGHTBEDIRTY with a system using atomics. Remove the TMPFS_DIRTYJeff Roberson2019-10-291-45/+30
| | | | | | | | | | | | | | flag and use the same system. This enables further fault locking improvements by allowing more faults to proceed with a shared lock. Reviewed by: kib Tested by: pho Differential Revision: https://reviews.freebsd.org/D22116 Notes: svn path=/head/; revision=354158
* Use atomics and a shared object lock to protect the object reference count.Jeff Roberson2019-10-291-31/+31
| | | | | | | | | | | | | | Certain consumers still need to guarantee a stable reference so we can not switch entirely to atomics yet. Exclusive lock holders can still modify and examine the refcount without using the ref api. Reviewed by: kib Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21598 Notes: svn path=/head/; revision=354157
* (5/6) Move the VPO_NOSYNC to PGA_NOSYNC to eliminate the dependency on theJeff Roberson2019-10-151-3/+4
| | | | | | | | | | | | object lock in vm_page_set_validclean(). Reviewed by: kib, markj Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21595 Notes: svn path=/head/; revision=353540
* (4/6) Protect page valid with the busy lock.Jeff Roberson2019-10-151-8/+13
| | | | | | | | | | | | | | Atomics are used for page busy and valid state when the shared busy is held. The details of the locking protocol and valid and dirty synchronization are in the updated vm_page.h comments. Reviewed by: kib, markj Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21594 Notes: svn path=/head/; revision=353539
* (3/6) Add a shared object busy synchronization mechanism that blocks new pageJeff Roberson2019-10-151-0/+41
| | | | | | | | | | | | | | | | | busy acquires while held. This allows code that would need to acquire and release a very large number of page busy locks to use the old mechanism where busy is only checked and not held. This comes at the cost of false positives but never false negatives which the single consumer, vm_fault_soft_fast(), handles. Reviewed by: kib Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21592 Notes: svn path=/head/; revision=353538
* (2/6) Don't release xbusy in vm_page_remove(), defer to vm_page_free_prep().Jeff Roberson2019-10-151-4/+7
| | | | | | | | | | | | This persists busy state across operations like rename and replace. Reviewed by: kib, markj Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21549 Notes: svn path=/head/; revision=353537
* (1/6) Replace busy checks with acquires where it is trival to do so.Jeff Roberson2019-10-151-14/+35
| | | | | | | | | | | | | | This is the first in a series of patches that promotes the page busy field to a first class lock that no longer requires the object lock for consistency. Reviewed by: kib, markj Tested by: pho Sponsored by: Netflix, Intel Differential Revision: https://reviews.freebsd.org/D21548 Notes: svn path=/head/; revision=353535
* Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map.Doug Moore2019-10-081-9/+2
| | | | | | | | | | | | | | | | | In case the implementation ever changes from using a chain of next pointers, then changing the macro definition will be necessary, but changing all the files that iterate over vm_map entries will not. Drop a counter in vm_object.c that would have an effect only if the vm_map entry count was wrong. Discussed with: alc Reviewed by: markj Tested by: pho (earlier version) Differential Revision: https://reviews.freebsd.org/D21882 Notes: svn path=/head/; revision=353298
* Fix object locking in vm_object_unwire() after r352174.Mark Johnston2019-09-271-2/+3
| | | | | | | | | | | | | | | | | | Now, vm_page_busy_sleep() expects the page's object to be locked. vm_object_unwire() does some unusual lazy locking of the object chain and keeps objects locked until a busy page is encountered or the loop terminates. When a busy page is encountered, rather than unlocking all but the "bottom-level" object, we must instead skip the object to which "tm" belongs. Reported and tested by: pho Reviewed by: kib Discussed with: jeff Sponsored by: Intel, Netflix Differential Revision: https://reviews.freebsd.org/D21790 Notes: svn path=/head/; revision=352800
* Revert r352406, which contained changes I didn't intend to commit.Mark Johnston2019-09-161-2/+2
| | | | Notes: svn path=/head/; revision=352407
* Fix a couple of nits in r352110.Mark Johnston2019-09-161-2/+2
| | | | | | | | | | | | | - Remove a dead variable from the amd64 pmap_extract_and_hold(). - Fix grammar in the vm_page_wire man page. Reported by: alc Reviewed by: alc, kib Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D21639 Notes: svn path=/head/; revision=352406
* Use REFCOUNT_COUNT() to obtain refcount where appropriate.Hans Petter Selasky2019-09-121-9/+9
| | | | | | | | | | | | | | Refcount waiting will set some flag bits in the refcount value. Make sure these bits get cleared by using the REFCOUNT_COUNT() macro to obtain the actual refcount. Differential Revision: https://reviews.freebsd.org/D21620 Reviewed by: kib@, markj@ MFC after: 1 week Sponsored by: Mellanox Technologies Notes: svn path=/head/; revision=352253
* Replace redundant code with a few new vm_page_grab facilities:Jeff Roberson2019-09-101-8/+4
| | | | | | | | | | | | | | - VM_ALLOC_NOCREAT will grab without creating a page. - vm_page_grab_valid() will grab and page in if necessary. - vm_page_busy_acquire() automates some busy acquire loops. Discussed with: alc, kib, markj Tested by: pho (part of larger branch) Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D21546 Notes: svn path=/head/; revision=352176
* Use the sleepq lock rather than the page lock to protect against wakeupJeff Roberson2019-09-101-29/+11
| | | | | | | | | | | | | races with page busy state. The object lock is still used as an interlock to ensure that the identity stays valid. Most callers should use vm_page_sleep_if_busy() to handle the locking particulars. Reviewed by: alc, kib, markj Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D21255 Notes: svn path=/head/; revision=352174
* Change synchonization rules for vm_page reference counting.Mark Johnston2019-09-091-43/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several mechanisms by which a vm_page reference is held, preventing the page from being freed back to the page allocator. In particular, holding the page's object lock is sufficient to prevent the page from being freed; holding the busy lock or a wiring is sufficent as well. These references are protected by the page lock, which must therefore be acquired for many per-page operations. This results in false sharing since the page locks are external to the vm_page structures themselves and each lock protects multiple structures. Transition to using an atomically updated per-page reference counter. The object's reference is counted using a flag bit in the counter. A second flag bit is used to atomically block new references via pmap_extract_and_hold() while removing managed mappings of a page. Thus, the reference count of a page is guaranteed not to increase if the page is unbusied, unmapped, and the object's write lock is held. As a consequence of this, the page lock no longer protects a page's identity; operations which move pages between objects are now synchronized solely by the objects' locks. The vm_page_wire() and vm_page_unwire() KPIs are changed. The former requires that either the object lock or the busy lock is held. The latter no longer has a return value and may free the page if it releases the last reference to that page. vm_page_unwire_noq() behaves the same as before; the caller is responsible for checking its return value and freeing or enqueuing the page as appropriate. vm_page_wire_mapped() is introduced for use in pmap_extract_and_hold(). It fails if the page is concurrently being unmapped, typically triggering a fallback to the fault handler. vm_page_wire() no longer requires the page lock and vm_page_unwire() now internally acquires the page lock when releasing the last wiring of a page (since the page lock still protects a page's queue state). In particular, synchronization details are no longer leaked into the caller. The change excises the page lock from several frequently executed code paths. In particular, vm_object_terminate() no longer bounces between page locks as it releases an object's pages, and direct I/O and sendfile(SF_NOCACHE) completions no longer require the page lock. In these latter cases we now get linear scalability in the common scenario where different threads are operating on different files. __FreeBSD_version is bumped. The DRM ports have been updated to accomodate the KPI changes. Reviewed by: jeff (earlier version) Tested by: gallatin (earlier version), pho Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20486 Notes: svn path=/head/; revision=352110
* vm_object_deallocate(): Remove no longer needed code.Konstantin Belousov2019-09-071-20/+0
| | | | | | | | | | | | | | We track text mappings explicitly, there is no removal of the text refs on the object deallocate any more, so tmpfs objects should not be treated specially. Doing so causes excess deref. Reported and tested by: gallatin Reviewed by: markj MFC after: 1 week Differential revision: https://reviews.freebsd.org/D21560 Notes: svn path=/head/; revision=352014
* vm_object_coalesce(): avoid extending any nosplit objects, not onlyKonstantin Belousov2019-09-071-1/+1
| | | | | | | | | | | that which back tmpfs nodes. Reviewed by: markj MFC after: 1 week Differential revision: https://reviews.freebsd.org/D21560 Notes: svn path=/head/; revision=352013
* vm: only lock tmpfs vnode shared in vm_object_deallocateMateusz Guzik2019-08-281-1/+1
| | | | | | | | | Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D21455 Notes: svn path=/head/; revision=351576
* Move OBJT_VNODE specific code from vm_object_terminate() toKonstantin Belousov2019-08-251-30/+5
| | | | | | | | | | | | | vnode_destroy_vobject(). Reviewed by: alc, jeff (previous version), markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D21357 Notes: svn path=/head/; revision=351478
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