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[79.177.39.148]) by smtp.gmail.com with ESMTPSA id k15sm3578856wmj.6.2021.01.26.06.41.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Jan 2021 06:41:08 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 339bb14d-206a-42b7-970f-b971d027cb2f DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611672073; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=lpQ5FIdDj86dAJrmmf5VYfY1DlwRO3+NvNwOL07qIDw=; b=HvCjADmLjlzT9GAtQ9f1AWu7sFg2qDHfdGulp0zJt1OT/6mJBdKBH5ebBR055d7qnt6NMK 9DU1vpU6PbckpJX0rq1WmokUbRMFpHsV0EjlcvIId8G2NEynXTAiawVaM8vQyj+JqrnVq4 x4+SvpKKKexq67k1BcCdSOmkZETGwsk= X-MC-Unique: zGEwA0dvNiqonZPBIA2LZQ-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=lpQ5FIdDj86dAJrmmf5VYfY1DlwRO3+NvNwOL07qIDw=; b=GI0Y+bGPfFwdb8BgAx2Zacf6jL9hc4Mb49OeCp1DeWLqAIVgHxrN/uQzlyE7+WOgLK DappzuiGU2dKiDEJrAfawvjfyFQIOMxyDQ9WkCrY35xuYqSrnvcdQ70ZxlZesgZRK6qX oCJ1pyhw/34w2C+hsudjSbE8ATE2Wv8DEd8duaKtGgOOc9vLbge4Wv3aFoVIwitQUit1 w3+SvZgXSWlmdf2plRQVLznPCSTrfgnBjvz4VveFVUq1TsiTcr9Tka8+EQFiYAMkuPHh m46rSPOObSqaFP5Q5Hv/e0cKHq0zFc/uzPoxQ4xj5wB4M1C6d25FnCbYx+GUq+oTYWQz i7mw== X-Gm-Message-State: AOAM531/u8nZ/MesoaD5mrNKBAxqY29og6PDfd9kziQM/i2YUVfDA+C6 6Cb6BR1Z/RwE2YJ8SKiDOLWnkeztDLUkQZmEbLyMivKna4dpmxyJtNJQphdT228pMTMB7dt7R2R xcaINzcWoaum5nbo45HZ8J4dg1is= X-Received: by 2002:a5d:4a06:: with SMTP id m6mr6488590wrq.258.1611672069389; Tue, 26 Jan 2021 06:41:09 -0800 (PST) X-Google-Smtp-Source: ABdhPJz39NDd6BmGGfj8bbtVOHXLcl2Kc7EC7CxqUvm9YDLAkU4h3pGT+kzWVgom/wIh//yZaOjzQw== X-Received: by 2002:a5d:4a06:: with SMTP id m6mr6488565wrq.258.1611672069262; Tue, 26 Jan 2021 06:41:09 -0800 (PST) Date: Tue, 26 Jan 2021 09:41:05 -0500 From: "Michael S. Tsirkin" To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Jason Wang , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , Pankaj Gupta , Michal Hocko , Oscar Salvador , Anshuman Khandual , Wei Yang , linux-hyperv@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org Subject: Re: [PATCH v1] mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE Message-ID: <20210126094058-mutt-send-email-mst@kernel.org> References: <20210126115829.10909-1-david@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210126115829.10909-1-david@redhat.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jan 26, 2021 at 12:58:29PM +0100, David Hildenbrand wrote: > Let's make "MEMHP_MERGE_RESOURCE" consistent with "MHP_NONE", "mhp_t" and > "mhp_flags". As discussed recently [1], "mhp" is our internal > acronym for memory hotplug now. > > [1] https://lore.kernel.org/linux-mm/c37de2d0-28a1-4f7d-f944-cfd7d81c334d@redhat.com/ > > Cc: Andrew Morton > Cc: "K. Y. Srinivasan" > Cc: Haiyang Zhang > Cc: Stephen Hemminger > Cc: Wei Liu > Cc: "Michael S. Tsirkin" > Cc: Jason Wang > Cc: Boris Ostrovsky > Cc: Juergen Gross > Cc: Stefano Stabellini > Cc: Pankaj Gupta > Cc: Michal Hocko > Cc: Oscar Salvador > Cc: Anshuman Khandual > Cc: Wei Yang > Cc: linux-hyperv@vger.kernel.org > Cc: virtualization@lists.linux-foundation.org > Cc: xen-devel@lists.xenproject.org > Signed-off-by: David Hildenbrand Acked-by: Michael S. Tsirkin > --- > drivers/hv/hv_balloon.c | 2 +- > drivers/virtio/virtio_mem.c | 2 +- > drivers/xen/balloon.c | 2 +- > include/linux/memory_hotplug.h | 2 +- > mm/memory_hotplug.c | 2 +- > 5 files changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c > index 8c471823a5af..2f776d78e3c1 100644 > --- a/drivers/hv/hv_balloon.c > +++ b/drivers/hv/hv_balloon.c > @@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long start, unsigned long size, > > nid = memory_add_physaddr_to_nid(PFN_PHYS(start_pfn)); > ret = add_memory(nid, PFN_PHYS((start_pfn)), > - (HA_CHUNK << PAGE_SHIFT), MEMHP_MERGE_RESOURCE); > + (HA_CHUNK << PAGE_SHIFT), MHP_MERGE_RESOURCE); > > if (ret) { > pr_err("hot_add memory failed error is %d\n", ret); > diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c > index 85a272c9978e..148bea39b09a 100644 > --- a/drivers/virtio/virtio_mem.c > +++ b/drivers/virtio/virtio_mem.c > @@ -623,7 +623,7 @@ static int virtio_mem_add_memory(struct virtio_mem *vm, uint64_t addr, > /* Memory might get onlined immediately. */ > atomic64_add(size, &vm->offline_size); > rc = add_memory_driver_managed(vm->nid, addr, size, vm->resource_name, > - MEMHP_MERGE_RESOURCE); > + MHP_MERGE_RESOURCE); > if (rc) { > atomic64_sub(size, &vm->offline_size); > dev_warn(&vm->vdev->dev, "adding memory failed: %d\n", rc); > diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c > index b57b2067ecbf..671c71245a7b 100644 > --- a/drivers/xen/balloon.c > +++ b/drivers/xen/balloon.c > @@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void) > mutex_unlock(&balloon_mutex); > /* add_memory_resource() requires the device_hotplug lock */ > lock_device_hotplug(); > - rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE); > + rc = add_memory_resource(nid, resource, MHP_MERGE_RESOURCE); > unlock_device_hotplug(); > mutex_lock(&balloon_mutex); > > diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h > index 3d99de0db2dd..4b834f5d032e 100644 > --- a/include/linux/memory_hotplug.h > +++ b/include/linux/memory_hotplug.h > @@ -53,7 +53,7 @@ typedef int __bitwise mhp_t; > * with this flag set, the resource pointer must no longer be used as it > * might be stale, or the resource might have changed. > */ > -#define MEMHP_MERGE_RESOURCE ((__force mhp_t)BIT(0)) > +#define MHP_MERGE_RESOURCE ((__force mhp_t)BIT(0)) > > /* > * Extended parameters for memory hotplug: > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 710e469fb3a1..ae497e3ff77c 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -1153,7 +1153,7 @@ int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags) > * In case we're allowed to merge the resource, flag it and trigger > * merging now that adding succeeded. > */ > - if (mhp_flags & MEMHP_MERGE_RESOURCE) > + if (mhp_flags & MHP_MERGE_RESOURCE) > merge_system_ram_resource(res); > > /* online pages if requested */ > -- > 2.29.2