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xen/balloon: Clear PG_offline in balloon_retrieve()

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Let's move the clearing to balloon_retrieve(). In
bp_state increase_reservation(), we now clear the flag a little earlier
than before, however, this should not matter for XEN.

Suggested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
David Hildenbrand 2019-10-01 11:01:52 +02:00 committed by Boris Ostrovsky
parent 59b52f105f
commit 04ccbdc390
1 changed files with 1 additions and 2 deletions
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3
drivers/xen/balloon.c
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@ -189,6 +189,7 @@ static struct page *balloon_retrieve(bool require_lowmem)
else else
balloon_stats.balloon_low--; balloon_stats.balloon_low--;
__ClearPageOffline(page);
return page; return page;
} }
@ -440,7 +441,6 @@ static enum bp_state increase_reservation(unsigned long nr_pages)
xenmem_reservation_va_mapping_update(1, &page, &frame_list[i]); xenmem_reservation_va_mapping_update(1, &page, &frame_list[i]);
/* Relinquish the page back to the allocator. */ /* Relinquish the page back to the allocator. */
__ClearPageOffline(page);
free_reserved_page(page); free_reserved_page(page);
} }
@ -606,7 +606,6 @@ int alloc_xenballooned_pages(int nr_pages, struct page **pages)
while (pgno < nr_pages) { while (pgno < nr_pages) {
page = balloon_retrieve(true); page = balloon_retrieve(true);
if (page) { if (page) {
__ClearPageOffline(page);
pages[pgno++] = page; pages[pgno++] = page;
#ifdef CONFIG_XEN_HAVE_PVMMU #ifdef CONFIG_XEN_HAVE_PVMMU
/* /*