From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C7EEE2CA8 for ; Tue, 4 Jan 2022 00:10:55 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 1CE51212BA; Tue, 4 Jan 2022 00:10:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1641255054; h=from:from:reply-to: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=A2ALFvvwPHg5q5L1G4b54hCspNPgzG67Kf3ruAG8aF0=; b=s7vtdU1sFVhtkHFFOTwudZFbY+e/jPcoYGxn1h+L4jaCTNKfYq3eWHuuYERdfcWpAAvHcW XWNjVSimboPvNf7qpuiRdhFlROw2A1Cfu1uR/AlkZQyinZGOWIg2mUASeSDK2DUjKio1PH O2UKbXBPda9Lu3Wnuxwmwn/QCt5KS9E= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1641255054; h=from:from:reply-to: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=A2ALFvvwPHg5q5L1G4b54hCspNPgzG67Kf3ruAG8aF0=; b=pN0mABrCDKq8GPrfrOH10mx8i322nlGj08kGv94Rc84oiFpNTSYdSCytZHnPE4Iu4dXi5W MUIMn+PY7/rf3pAg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id E195A139EE; Tue, 4 Jan 2022 00:10:53 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id uNh5No2Q02FEQwAAMHmgww (envelope-from ); Tue, 04 Jan 2022 00:10:53 +0000 From: Vlastimil Babka To: Matthew Wilcox , Christoph Lameter , David Rientjes , Joonsoo Kim , Pekka Enberg Cc: linux-mm@kvack.org, Andrew Morton , Johannes Weiner , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, patches@lists.linux.dev, Vlastimil Babka Subject: [PATCH v4 07/32] mm: Convert __ksize() to struct slab Date: Tue, 4 Jan 2022 01:10:21 +0100 Message-Id: <20220104001046.12263-8-vbabka@suse.cz> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220104001046.12263-1-vbabka@suse.cz> References: <20220104001046.12263-1-vbabka@suse.cz> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2093; i=vbabka@suse.cz; h=from:subject; bh=JVSehMFnzLnatRzND2uRu3Se3hBq6rrfZ0i62qRrKAA=; b=owEBbQGS/pANAwAIAeAhynPxiakQAcsmYgBh05BvZgQufd9NgTSCczy5Ahfm0Wvb2DaE0pomaH2v N3Oo932JATMEAAEIAB0WIQSNS5MBqTXjGL5IXszgIcpz8YmpEAUCYdOQbwAKCRDgIcpz8YmpELQ6B/ wKbaV1+W8nnnNrzIMAAbAlFkkx8mQZBEhtoTInFg7l4mae5SbGQ0n+9cgm/mP+yqEcFTrs3m0GR55u kp2iLXl7DpIJ/jCNfC/r+Tyhp3V711DKocNDx01KSOr64nMBRz+c++D29yKvpjVfJfFE4SPNZrQrl/ Fnvz4Uxl5O4yXZ0BVQtXA9YhfV7fssFTsFFO4vdON+kyOYmM8Q5xWBLGem4eY6Eez+dAqhWnkW7syl TLRx2gLa3OnxMvLRekQftOEXf4pHRU1Yg0lq6q3zoJm3ocwmnjfdR/6jEtWbEPaK799YGcdFeDfEgr dYpaOAJEOsJZ+4o27Ns+t1tabbW0jh X-Developer-Key: i=vbabka@suse.cz; a=openpgp; fpr=A940D434992C2E8E99103D50224FA7E7CC82A664 Content-Transfer-Encoding: 8bit From: "Matthew Wilcox (Oracle)" In SLUB, use folios, and struct slab to access slab_cache field. In SLOB, use folios to properly resolve pointers beyond PAGE_SIZE offset of the object. [ vbabka@suse.cz: use folios, and only convert folio_test_slab() == true folios to struct slab ] Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Vlastimil Babka Acked-by: Johannes Weiner Reviewed-by: Roman Gushchin --- mm/slob.c | 8 ++++---- mm/slub.c | 12 +++++------- 2 files changed, 9 insertions(+), 11 deletions(-) diff --git a/mm/slob.c b/mm/slob.c index 03deee1e6a94..c8a4290012a6 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -570,7 +570,7 @@ EXPORT_SYMBOL(kfree); /* can't use ksize for kmem_cache_alloc memory, only kmalloc */ size_t __ksize(const void *block) { - struct page *sp; + struct folio *folio; int align; unsigned int *m; @@ -578,9 +578,9 @@ size_t __ksize(const void *block) if (unlikely(block == ZERO_SIZE_PTR)) return 0; - sp = virt_to_page(block); - if (unlikely(!PageSlab(sp))) - return page_size(sp); + folio = virt_to_folio(block); + if (unlikely(!folio_test_slab(folio))) + return folio_size(folio); align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); m = (unsigned int *)(block - align); diff --git a/mm/slub.c b/mm/slub.c index c94fb4b4d655..269e10d341a8 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4527,19 +4527,17 @@ void __check_heap_object(const void *ptr, unsigned long n, struct page *page, size_t __ksize(const void *object) { - struct page *page; + struct folio *folio; if (unlikely(object == ZERO_SIZE_PTR)) return 0; - page = virt_to_head_page(object); + folio = virt_to_folio(object); - if (unlikely(!PageSlab(page))) { - WARN_ON(!PageCompound(page)); - return page_size(page); - } + if (unlikely(!folio_test_slab(folio))) + return folio_size(folio); - return slab_ksize(page->slab_cache); + return slab_ksize(folio_slab(folio)->slab_cache); } EXPORT_SYMBOL(__ksize); -- 2.34.1