From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 648223E1D19 for ; Fri, 29 May 2026 15:22:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780068156; cv=none; b=ZmzjKXx5AKil92BjcYC71e9m/PN9yDnVbzwh/ib6WHPEvDuZQMaNv58qKQMm6Dpq8XQF5BzqN1C3ViyM+XZbsiSftX2brcqzHDE+VufCZAm8cOXofV0oBZ1rKdmtkzKyjjnEZb69zb29ITOx9Q37vWWEFGzejrnqdyBaZi5o+Sk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780068156; c=relaxed/simple; bh=zfTSssqCCnno4sdUyiW/sc4lt3FSQTZh1jfv0HEfTik=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=FSJcjJl+woQDJBd2CmR5VZ3h5DceeWVUuCcTdoMuSfYBZrqMq2Hrv334xb7z4krVUGOBQtIaje/59rDdy+A5e1QCLYESB59AJAXzWbTWmEeUPK+NoFp61jQlHEF+MB/MF+fChBE+/NEFwEz230F/czgnnPrziMFHPKIEhIEZYT0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Q3f4U2ha; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b=Y+SOk1Wf; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Q3f4U2ha"; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b="Y+SOk1Wf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1780068154; 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=3RnCcviTYcs0bJrQCPa7/Ta1tOKxh1kkpoqwRDnBft0=; b=Q3f4U2haBuvuzxfAXnu4OSPJ96PbWImWFQMEJKbOfbETDPSPX8rEmkaFOqFWi9x0z7HjRl 00Z6T4Dbq1qx0as8PalWGaFDcAqMYsKNJLWKkW9z0mKdemAFXwf278lAzwQWsRT5w8G6Qg 5t2k8kQXki91cGhfSKLCYSV7FjXHG7E= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-657-bYxwXsd9P6SxwATXBc4Uyg-1; Fri, 29 May 2026 11:22:33 -0400 X-MC-Unique: bYxwXsd9P6SxwATXBc4Uyg-1 X-Mimecast-MFC-AGG-ID: bYxwXsd9P6SxwATXBc4Uyg_1780068152 Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-48fd3dbd16aso115315595e9.0 for ; Fri, 29 May 2026 08:22:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=google; t=1780068152; x=1780672952; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=3RnCcviTYcs0bJrQCPa7/Ta1tOKxh1kkpoqwRDnBft0=; b=Y+SOk1WfAQGkn5Mn3ufqySIYf9gPcRMtA/lX8nSlSX2S7wuoEUGjpD7XyANA6xSlj1 S8Canka4zR+t3GvhHuadp87hILQmPithDg1WReaQ+Nglj5aOtDlw+4iDs+I04bc3gwi2 0xC93giK8Uf6nkbCSHfDJS/wVRmd3Gyi/1Ni+yj53j0XGCkiH0aOignP7S2j1jdC/ex3 FYMANL8Wss34UbxXizwZuNaJrNnjnF3mZnUGu+YUcH4CT6hMmgLymHuLIQfmPFoP9io1 aJpVtgVMsC9X+pgE5lyZfhhsnd43M94idyeBciO7OobWmpmkWKNNA9G0xJvOdyNeKgi7 xAoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780068152; x=1780672952; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3RnCcviTYcs0bJrQCPa7/Ta1tOKxh1kkpoqwRDnBft0=; b=hSCW4l3ozluJyC5TAUh+2SxQreRAE/Izf1m8b3LQxK8e9lcIYYICBJYH0kqEFUFvOq MMwNDt3/XoCimRo2Gvv5FqZEDcXwrns4FdQLeBtpapiTgdRrBVlFGqchomO/l6V3rGsU lMSS5U8HoSR8I8ZDyfy5gNfaFU7Ba8ZE86iw7jtGeS376dpqqRWfXMgZdlNEeY05Cs21 2dyMvqb0c1I+LkKfmIDIHnXGePE8oTgv6uQSYhnmThCuBXW5zJSFMRgJo2wT32MahiLE k/1TJq2AhkMUzUz+2WzeXdLYY29nFkVDGSAUkUlfsVsUT9lGCnhR70PpO9IsKW/aYArL +jWQ== X-Gm-Message-State: AOJu0YyF1wqTGxI8uFtj7hyUoCoSIyQ+aPiNqwlrzv1mLzR6NbBjJ+RA J/R5nTqtyoqr4rDhgrgNgmdgQAQYGX63R6QdvSbMlLmRoH05nb2i9jnJBvG7Oi5npAleYpOkG5G Dz9sR4TSIgWt37AcJ31WJCV71noYDy816H2HUSC/yzDVa6SJSpn9Kef7Ltnt+Sdqw7wNOBIgH+r Z7O8xI6Lfu9DCinMC6mPWzKXtQHYkSWoUzAtNdfY8j22A= X-Gm-Gg: Acq92OEHeoLw/5JQFSB+vANBdetbT4UxpYiplSb9C108V5KArz3iuVA4LRt6Pzq3oHD PN0E78d5pz3UnXI3hAOBUdnlZQWEwZoOTmsNyKBopvC4bk/l4QKRQyZSE3rGOfowl2OMRdsZrfn PCdAArgC6qDDEXSc8vjlwF2o2d/yS4AW2GgxlPxVg9yi/aOpIXHLySEpv10uDeVWt8z5C8cVHkW N691pALq7ccf7Q3efecIwmstAZfumNMX0FdkBIK+cNSxo/wMJIn74QGDMlJTty9lEPNbZ0I80WF 6XxD9vWut+c2IKNu4FeDj2IPXcpkNysJfhzpDhM6vgrZmCEaq9FptG+/LGthqmWiu2prgPnBl8+ EiMrD//9pocqnqW4XCThRwgZd1erMBhsKXB1gtlC2rMblYWI4kqB+EQ== X-Received: by 2002:a05:600c:34cf:b0:490:5e2a:f924 with SMTP id 5b1f17b1804b1-490a2900e81mr2228145e9.7.1780068151888; Fri, 29 May 2026 08:22:31 -0700 (PDT) X-Received: by 2002:a05:600c:34cf:b0:490:5e2a:f924 with SMTP id 5b1f17b1804b1-490a2900e81mr2226845e9.7.1780068151254; Fri, 29 May 2026 08:22:31 -0700 (PDT) Received: from redhat.com (IGLD-80-230-25-45.inter.net.il. [80.230.25.45]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4909d6eb3adsm46766005e9.11.2026.05.29.08.22.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 May 2026 08:22:30 -0700 (PDT) Date: Fri, 29 May 2026 11:22:26 -0400 From: "Michael S. Tsirkin" To: linux-kernel@vger.kernel.org Cc: "David Hildenbrand (Arm)" , Jason Wang , Xuan Zhuo , Eugenio =?utf-8?B?UMOpcmV6?= , Muchun Song , Oscar Salvador , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Hugh Dickins , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Christoph Lameter , David Rientjes , Roman Gushchin , Harry Yoo , Axel Rasmussen , Yuanchu Xie , Wei Xu , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , virtualization@lists.linux.dev, linux-mm@kvack.org, Andrea Arcangeli Subject: [PATCH v9 05/37] mm: hugetlb: remove dead alloc_hugetlb_folio stub Message-ID: <8e2d9431b0e324100d550c765024c883560a4367.1780067977.git.mst@redhat.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent Remove the !CONFIG_HUGETLB_PAGE stub for alloc_hugetlb_folio(). The stub is dead code: all callers are in mm/hugetlb.c (CONFIG_HUGETLB_PAGE) or fs/hugetlbfs/inode.c (CONFIG_HUGETLBFS), and CONFIG_HUGETLB_PAGE is def_bool HUGETLBFS with nothing selecting it independently. The stub is also broken: it returns NULL, but all callers check IS_ERR(folio), so a NULL return would not be caught and would crash on the subsequent folio dereference. Remove it now since follow-up patches change the signature of alloc_hugetlb_folio and would otherwise need to update the broken stub too. Signed-off-by: Michael S. Tsirkin Reviewed-by: Gregory Price Assisted-by: Claude:claude-opus-4-6 --- include/linux/hugetlb.h | 7 ------- 1 file changed, 7 deletions(-) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 93418625d3c5..f016bc2e8936 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -1129,13 +1129,6 @@ static inline void wait_for_freed_hugetlb_folios(void) { } -static inline struct folio *alloc_hugetlb_folio(struct vm_area_struct *vma, - unsigned long addr, - bool cow_from_owner) -{ - return NULL; -} - static inline struct folio * alloc_hugetlb_folio_reserve(struct hstate *h, int preferred_nid, nodemask_t *nmask, gfp_t gfp_mask) -- MST