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swap_pager: Ensure that swapoff puts swapped-in pages in page queues

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Readahead/behind pages are handled by the swap pager, but the get_pages
caller is responsible for putting fetched pages into queues (or wiring
them beforehand).

Note that the VM object lock prevents the newly queued page from being
immediately reclaimed in the window before it is marked dirty by
swap_pager_swapoff_object().

Reported by:	pho
Tested by:	pho
Reviewed by:	dougm, alc, kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D47526

(cherry picked from commit d11d407aee4835fd50811a5980125bb46748fa0b)
This commit is contained in:
Mark Johnston 2024-11-13 14:02:20 +00:00
parent ee0c917eeb
commit 34182e597b
1 changed files with 1 additions and 0 deletions
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1
sys/vm/swap_pager.c
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@ -1895,6 +1895,7 @@ swap_pager_swapoff_object(struct swdevt *sp, vm_object_t object)
__func__, rv);
VM_OBJECT_WLOCK(object);
vm_object_pip_wakeupn(object, 1);
vm_page_deactivate_noreuse(m);
vm_page_xunbusy(m);
/*