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 C49EC2E3382 for ; Tue, 15 Jul 2025 13:24:02 +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=1752585844; cv=none; b=s06VmFzzrzaaEIm0FoveyPVjK4oV721IYkLH/rQW+EtINIFpNP8PbjBvJ+psSSypNEnSuXDa1X8EMsqzq7Th7NQSRiWwDEwFQR6ZSvof+030YA5PD3CHYWJV/HkkMrWnXtHsHJ0i4xB5CWqM84zjajt66FwB7t8BcOTEOEnQfwI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752585844; c=relaxed/simple; bh=ne3nE0vrAY5S0hOjuSZuCjXi2ceWjqlUEku8gXbVmoM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OQMAfoNFaJQZxkTZ1RnOsggX1tUP6cFrEI7xrgN7TctPJZeNTAjC5mtFxuvTSF2oPh40GtAHHiggXDNCjtztlLBe7I2yfhQSpV8KwEUB4/JuFEncbYSFXJVCTM7/HYxwXv3qh5MZqujkvuvVO4w6lwqag03FLNz1dXfubo/tbX0= 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=dWXpudUd; 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="dWXpudUd" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752585842; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=oD0dyDm8lg70iaRDQ2YlIByz/7M92Pfar0orAStmNLA=; b=dWXpudUd+7uFKpi76cTtiTaK2Ga2BbpE4LD6hcXiNX66vYofj+RGjGPcAEkmkVuNnN9v2F w+PzPfMAaFpSdBq82xq9aUvNcpoozWjt4smx2CaS5hx3yO09ldSKj2vT/xLqo4EXpQLV7a rBMPFRqvlCIjB3ExgXr8p9nKcnWStcw= 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-iv4l_lxBNWCdCnS8qes7kQ-1; Tue, 15 Jul 2025 09:23:58 -0400 X-MC-Unique: iv4l_lxBNWCdCnS8qes7kQ-1 X-Mimecast-MFC-AGG-ID: iv4l_lxBNWCdCnS8qes7kQ_1752585837 Received: by mail-wm1-f72.google.com with SMTP id 5b1f17b1804b1-455f79a2a16so32088635e9.2 for ; Tue, 15 Jul 2025 06:23:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752585837; x=1753190637; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oD0dyDm8lg70iaRDQ2YlIByz/7M92Pfar0orAStmNLA=; b=LWIjUE0xHobna/Yi/6+25Fv4I4POeCrYuIDLJFhJogv3CqnGAwpRdg8oNftkWE4Pcf FHbNG6Qj3IVYDxK7tX74cN/KcqY4mTUAD2HSGGZktA6lpbIWN17lFtcVbr1ZNBRFTmZo zKzEHLlm4RHsHOi2Za5voABfiOczTUW7YtpU3riDqHzy5pDwGxZi4Fz1JGZyANC10kbx EJPR7oq+nqmQTr5+DJl0Q1czyQl1K50bLK9UHzF7BosyeSARmv+y9YB/QexI0Tk8EU/v SyW78FweGb6Jsw7Q08fy5eWrZDkDn04WFbO4z0RkdDy8AanVW0RI57LwmN4pgi8FMSzm jdnA== X-Forwarded-Encrypted: i=1; AJvYcCU7bcxYAekHGWMV9gR/1JchAkRJeeOgJcNVcAb80PHkluPHHiuxRX/ksjtRqcycl2ri0AnZJ4Ve4jwRWX/i@vger.kernel.org X-Gm-Message-State: AOJu0Yx+zkqZr12JtiviLX0ghsD3acKZoLkRYAaMogh0S3GEgi6Lgw+2 nACh8XXs0axyLUawFCYAeJ46yQXjek4aRnq6Vby0CbwMQa2YN8skaBNU2EPp3057qDdIsp408Ze q+LoaYlC9kCwTFKxAFdkklRFN8V6qGTSoy7cgWBdQsI/V/lZ4VwVKWMISK2tIYQPsiZY= X-Gm-Gg: ASbGncvNtKH16/G6pNG37tQsxVmMHZ6olLGP0j3qzRIR+V6D7qxmfLDehJf7MIbJmKs Tbp4CCBImQgD6DqJpE5vhNm3jIAQfisw2RfvzeqqjvnyOOg7r4S6NiPtPYFBFJ3T1xMxAdSVRfu D5DxYNVyxZfeg4jNQjlg73/AJkkW8RRj49V/y3WHfDf6c/u42iueE1PRDO6Q4/WFhsvjuVslRdj bDfpAbQ5oNuXVEEvABFq/eIvzyvFB9bAieNpCzhuldrdAIb3RiCXRn0k7NZkyddgy8Ifak38KnT J/z4XspK5ZxtHeKYaICbKALUu+Yhaw4voEKPnRB2k5zUoiP+k/TtLMvBWwyErFHxBQMWDpoMxV2 60vofnzcUDy5KM/cmhy7pFfH1 X-Received: by 2002:a5d:6f1c:0:b0:3a5:527b:64c6 with SMTP id ffacd0b85a97d-3b60a144d0emr2333546f8f.1.1752585837423; Tue, 15 Jul 2025 06:23:57 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFp1q78RzrsyhD1CJX8BXKE4JqnpAS3jXZChO9oe8FS+N0ne3lTOJKZGuzSFKSesdJ2HD0wXw== X-Received: by 2002:a5d:6f1c:0:b0:3a5:527b:64c6 with SMTP id ffacd0b85a97d-3b60a144d0emr2333512f8f.1.1752585836975; Tue, 15 Jul 2025 06:23:56 -0700 (PDT) Received: from localhost (p200300d82f2849002c244e201f219fbd.dip0.t-ipconnect.de. [2003:d8:2f28:4900:2c24:4e20:1f21:9fbd]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-454d5037fa0sm200348205e9.7.2025.07.15.06.23.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Jul 2025 06:23:56 -0700 (PDT) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, xen-devel@lists.xenproject.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, David Hildenbrand , Andrew Morton , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Dan Williams , Matthew Wilcox , Jan Kara , Alexander Viro , Christian Brauner , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Jann Horn , Pedro Falcato , Hugh Dickins , Oscar Salvador , Lance Yang , Alistair Popple Subject: [PATCH v1 2/9] mm/huge_memory: move more common code into insert_pud() Date: Tue, 15 Jul 2025 15:23:43 +0200 Message-ID: <20250715132350.2448901-3-david@redhat.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250715132350.2448901-1-david@redhat.com> References: <20250715132350.2448901-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Let's clean it all further up. No functional change intended. Reviewed-by: Oscar Salvador Reviewed-by: Alistair Popple Signed-off-by: David Hildenbrand --- mm/huge_memory.c | 36 +++++++++++++----------------------- 1 file changed, 13 insertions(+), 23 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 154cafec58dcf..1c4a42413042a 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1518,25 +1518,30 @@ static pud_t maybe_pud_mkwrite(pud_t pud, struct vm_area_struct *vma) return pud; } -static void insert_pud(struct vm_area_struct *vma, unsigned long addr, +static vm_fault_t insert_pud(struct vm_area_struct *vma, unsigned long addr, pud_t *pud, struct folio_or_pfn fop, pgprot_t prot, bool write) { struct mm_struct *mm = vma->vm_mm; + spinlock_t *ptl; pud_t entry; + if (addr < vma->vm_start || addr >= vma->vm_end) + return VM_FAULT_SIGBUS; + + ptl = pud_lock(mm, pud); if (!pud_none(*pud)) { const unsigned long pfn = fop.is_folio ? folio_pfn(fop.folio) : fop.pfn; if (write) { if (WARN_ON_ONCE(pud_pfn(*pud) != pfn)) - return; + goto out_unlock; entry = pud_mkyoung(*pud); entry = maybe_pud_mkwrite(pud_mkdirty(entry), vma); if (pudp_set_access_flags(vma, addr, pud, entry, 1)) update_mmu_cache_pud(vma, addr, pud); } - return; + goto out_unlock; } if (fop.is_folio) { @@ -1555,6 +1560,9 @@ static void insert_pud(struct vm_area_struct *vma, unsigned long addr, } set_pud_at(mm, addr, pud, entry); update_mmu_cache_pud(vma, addr, pud); +out_unlock: + spin_unlock(ptl); + return VM_FAULT_NOPAGE; } /** @@ -1576,7 +1584,6 @@ vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, unsigned long pfn, struct folio_or_pfn fop = { .pfn = pfn, }; - spinlock_t *ptl; /* * If we had pud_special, we could avoid all these restrictions, @@ -1588,16 +1595,9 @@ vm_fault_t vmf_insert_pfn_pud(struct vm_fault *vmf, unsigned long pfn, (VM_PFNMAP|VM_MIXEDMAP)); BUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags)); - if (addr < vma->vm_start || addr >= vma->vm_end) - return VM_FAULT_SIGBUS; - pfnmap_setup_cachemode_pfn(pfn, &pgprot); - ptl = pud_lock(vma->vm_mm, vmf->pud); - insert_pud(vma, addr, vmf->pud, fop, pgprot, write); - spin_unlock(ptl); - - return VM_FAULT_NOPAGE; + return insert_pud(vma, addr, vmf->pud, fop, pgprot, write); } EXPORT_SYMBOL_GPL(vmf_insert_pfn_pud); @@ -1614,25 +1614,15 @@ vm_fault_t vmf_insert_folio_pud(struct vm_fault *vmf, struct folio *folio, { struct vm_area_struct *vma = vmf->vma; unsigned long addr = vmf->address & PUD_MASK; - pud_t *pud = vmf->pud; - struct mm_struct *mm = vma->vm_mm; struct folio_or_pfn fop = { .folio = folio, .is_folio = true, }; - spinlock_t *ptl; - - if (addr < vma->vm_start || addr >= vma->vm_end) - return VM_FAULT_SIGBUS; if (WARN_ON_ONCE(folio_order(folio) != PUD_ORDER)) return VM_FAULT_SIGBUS; - ptl = pud_lock(mm, pud); - insert_pud(vma, addr, vmf->pud, fop, vma->vm_page_prot, write); - spin_unlock(ptl); - - return VM_FAULT_NOPAGE; + return insert_pud(vma, addr, vmf->pud, fop, vma->vm_page_prot, write); } EXPORT_SYMBOL_GPL(vmf_insert_folio_pud); #endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ -- 2.50.1