Commit b01d7cb4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus-5.5b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "Two fixes: one for a resource accounting bug in some configurations
  and a fix for another patch which went into rc1"

* tag 'for-linus-5.5b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/balloon: fix ballooned page accounting without hotplug enabled
  xen-blkback: prevent premature module unload
parents 2e6d3045 c673ec61
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+10 −0
Original line number Diff line number Diff line
@@ -171,6 +171,15 @@ static struct xen_blkif *xen_blkif_alloc(domid_t domid)
	blkif->domid = domid;
	atomic_set(&blkif->refcnt, 1);
	init_completion(&blkif->drain_complete);

	/*
	 * Because freeing back to the cache may be deferred, it is not
	 * safe to unload the module (and hence destroy the cache) until
	 * this has completed. To prevent premature unloading, take an
	 * extra module reference here and release only when the object
	 * has been freed back to the cache.
	 */
	__module_get(THIS_MODULE);
	INIT_WORK(&blkif->free_work, xen_blkif_deferred_free);

	return blkif;
@@ -320,6 +329,7 @@ static void xen_blkif_free(struct xen_blkif *blkif)

	/* Make sure everything is drained before shutting down */
	kmem_cache_free(xen_blkif_cachep, blkif);
	module_put(THIS_MODULE);
}

int __init xen_blkif_interface_init(void)
+2 −1
Original line number Diff line number Diff line
@@ -394,7 +394,8 @@ static struct notifier_block xen_memory_nb = {
#else
static enum bp_state reserve_additional_memory(void)
{
	balloon_stats.target_pages = balloon_stats.current_pages;
	balloon_stats.target_pages = balloon_stats.current_pages +
				     balloon_stats.target_unpopulated;
	return BP_ECANCELED;
}
#endif /* CONFIG_XEN_BALLOON_MEMORY_HOTPLUG */