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Tue, 20 Feb 2024 16:58:45 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id GJHYBUXa1GVKXQAAD6G6ig (envelope-from ); Tue, 20 Feb 2024 16:58:45 +0000 From: Vlastimil Babka Date: Tue, 20 Feb 2024 17:58:25 +0100 Subject: [PATCH 1/3] mm, slab: deprecate SLAB_MEM_SPREAD flag 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240220-slab-cleanup-flags-v1-1-e657e373944a@suse.cz> References: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> In-Reply-To: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino Cc: Zheng Yejian , Xiongwei Song , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, Vlastimil Babka , Steven Rostedt X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1731; i=vbabka@suse.cz; h=from:subject:message-id; bh=OddJ5DHeDgks/i1mqhLaA/c2lRjGQhZqtVTweHMQxDw=; b=owEBbQGS/pANAwAIAbvgsHXSRYiaAcsmYgBl1No9wmY1D3tW/Cy64eGuViYQaGuyi/p0I9ZML 1aOynVc32uJATMEAAEIAB0WIQR7u8hBFZkjSJZITfG74LB10kWImgUCZdTaPQAKCRC74LB10kWI mgcCB/9ah3oEc1eVnw/8rJfS4V2CrkLLtkwjbxIk0QO1Y0hJK6fdAYScMioTiqBbFz2fYneiEib unIEdHVvpl+axQ6ErHTm8ti5I3TyU4MWWs83wr4c2KDwr6M1dl/PvpBvMynOrlEipojbhKdzBUG M7r0KCDPswYFY/bWZNDMSglmuV4rdwkzWpAlBnmUSK1ARpf/CL/dLuc8EoPraztYVvBTuVl7/sS yeaXUhG1SHr+j+ewEl+8Ng27ejIu7HOiappS80WyxN0awRxddapuB+uGZB7Oe88F1qMmz88+5/T Zwh17MejM5IUm/PPb+QCsLgpmJBon11M/C4qFpCzuDCoY2ct X-Developer-Key: i=vbabka@suse.cz; a=openpgp; fpr=A940D434992C2E8E99103D50224FA7E7CC82A664 Authentication-Results: smtp-out1.suse.de; none X-Spam-Level: X-Spam-Score: -3.81 X-Spamd-Result: default: False [-3.81 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; REPLY(-4.00)[]; BAYES_HAM(-0.01)[46.40%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_RATELIMIT(0.00)[to_ip_from(RLqdadssyy1w6u3twx3pq4jyny)]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; RCPT_COUNT_TWELVE(0.00)[20]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:email]; FREEMAIL_TO(0.00)[linux.com,kernel.org,google.com,lge.com,linux-foundation.org,linux.dev,gmail.com,arm.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Spam-Flag: NO The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was removed. SLUB instead relies on the page allocator's NUMA policies. Change the flag's value to 0 to free up the value it had, and mark it for full removal once all users are gone. Reported-by: Steven Rostedt Closes: https://lore.kernel.org/all/20240131172027.10f64405@gandalf.local.h= ome/ Signed-off-by: Vlastimil Babka Reviewed-by: Chengming Zhou Reviewed-by: Roman Gushchin --- include/linux/slab.h | 5 +++-- mm/slab.h | 1 - 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index b5f5ee8308d0..6252f44115c2 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -96,8 +96,6 @@ */ /* Defer freeing slabs to RCU */ #define SLAB_TYPESAFE_BY_RCU ((slab_flags_t __force)0x00080000U) -/* Spread some memory over cpuset */ -#define SLAB_MEM_SPREAD ((slab_flags_t __force)0x00100000U) /* Trace allocations and frees */ #define SLAB_TRACE ((slab_flags_t __force)0x00200000U) =20 @@ -164,6 +162,9 @@ #endif #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ =20 +/* Obsolete unused flag, to be removed */ +#define SLAB_MEM_SPREAD 0 + /* * ZERO_SIZE_PTR will be returned for zero sized kmalloc requests. * diff --git a/mm/slab.h b/mm/slab.h index 54deeb0428c6..f4534eefb35d 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -469,7 +469,6 @@ static inline bool is_kmalloc_cache(struct kmem_cache *= s) SLAB_STORE_USER | \ SLAB_TRACE | \ SLAB_CONSISTENCY_CHECKS | \ - SLAB_MEM_SPREAD | \ SLAB_NOLEAKTRACE | \ SLAB_RECLAIM_ACCOUNT | \ SLAB_TEMPORARY | \ --=20 2.43.1 From nobody Sun Feb 8 12:20:50 2026 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (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 473A676906 for ; 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Tue, 20 Feb 2024 16:58:45 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id SA77DUXa1GVKXQAAD6G6ig (envelope-from ); Tue, 20 Feb 2024 16:58:45 +0000 From: Vlastimil Babka Date: Tue, 20 Feb 2024 17:58:26 +0100 Subject: [PATCH 2/3] mm, slab: use an enum to define SLAB_ cache creation flags 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240220-slab-cleanup-flags-v1-2-e657e373944a@suse.cz> References: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> In-Reply-To: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino Cc: Zheng Yejian , Xiongwei Song , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, Vlastimil Babka X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; 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MIME_GOOD(-0.10)[text/plain]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; R_RATELIMIT(0.00)[to_ip_from(RLqdadssyy1w6u3twx3pq4jyny)]; RCVD_COUNT_THREE(0.00)[3]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; RCPT_COUNT_TWELVE(0.00)[19]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:email]; FREEMAIL_TO(0.00)[linux.com,kernel.org,google.com,lge.com,linux-foundation.org,linux.dev,gmail.com,arm.com]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Spam-Level: X-Spam-Flag: NO X-Spam-Score: -5.60 The values of SLAB_ cache creation flagsare defined by hand, which is tedious and error-prone. Use an enum to assign the bit number and a __SF_BIT() macro to #define the final flags. This renumbers the flag values, which is OK as they are only used internally. Signed-off-by: Vlastimil Babka Reviewed-by: Chengming Zhou Reviewed-by: Roman Gushchin --- include/linux/slab.h | 81 ++++++++++++++++++++++++++++++++++++++----------= ---- mm/slub.c | 6 ++-- 2 files changed, 63 insertions(+), 24 deletions(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 6252f44115c2..f893a132dd5a 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -21,29 +21,68 @@ #include #include =20 +enum _slab_flag_bits { + _SLAB_CONSISTENCY_CHECKS, + _SLAB_RED_ZONE, + _SLAB_POISON, + _SLAB_KMALLOC, + _SLAB_HWCACHE_ALIGN, + _SLAB_CACHE_DMA, + _SLAB_CACHE_DMA32, + _SLAB_STORE_USER, + _SLAB_PANIC, + _SLAB_TYPESAFE_BY_RCU, + _SLAB_TRACE, +#ifdef CONFIG_DEBUG_OBJECTS + _SLAB_DEBUG_OBJECTS, +#endif + _SLAB_NOLEAKTRACE, + _SLAB_NO_MERGE, +#ifdef CONFIG_FAILSLAB + _SLAB_FAILSLAB, +#endif +#ifdef CONFIG_MEMCG_KMEM + _SLAB_ACCOUNT, +#endif +#ifdef CONFIG_KASAN_GENERIC + _SLAB_KASAN, +#endif + _SLAB_NO_USER_FLAGS, +#ifdef CONFIG_KFENCE + _SLAB_SKIP_KFENCE, +#endif +#ifndef CONFIG_SLUB_TINY + _SLAB_RECLAIM_ACCOUNT, +#endif + _SLAB_OBJECT_POISON, + _SLAB_CMPXCHG_DOUBLE, + _SLAB_FLAGS_LAST_BIT +}; + +#define __SF_BIT(nr) ((slab_flags_t __force)(1U << (nr))) =20 /* * Flags to pass to kmem_cache_create(). * The ones marked DEBUG need CONFIG_SLUB_DEBUG enabled, otherwise are no-= op */ /* DEBUG: Perform (expensive) checks on alloc/free */ -#define SLAB_CONSISTENCY_CHECKS ((slab_flags_t __force)0x00000100U) +#define SLAB_CONSISTENCY_CHECKS __SF_BIT(_SLAB_CONSISTENCY_CHECKS) /* DEBUG: Red zone objs in a cache */ -#define SLAB_RED_ZONE ((slab_flags_t __force)0x00000400U) +#define SLAB_RED_ZONE __SF_BIT(_SLAB_RED_ZONE) /* DEBUG: Poison objects */ -#define SLAB_POISON ((slab_flags_t __force)0x00000800U) +#define SLAB_POISON __SF_BIT(_SLAB_POISON) /* Indicate a kmalloc slab */ -#define SLAB_KMALLOC ((slab_flags_t __force)0x00001000U) +#define SLAB_KMALLOC __SF_BIT(_SLAB_KMALLOC) /* Align objs on cache lines */ -#define SLAB_HWCACHE_ALIGN ((slab_flags_t __force)0x00002000U) +#define SLAB_HWCACHE_ALIGN __SF_BIT(_SLAB_HWCACHE_ALIGN) /* Use GFP_DMA memory */ -#define SLAB_CACHE_DMA ((slab_flags_t __force)0x00004000U) +#define SLAB_CACHE_DMA __SF_BIT(_SLAB_CACHE_DMA) /* Use GFP_DMA32 memory */ -#define SLAB_CACHE_DMA32 ((slab_flags_t __force)0x00008000U) +#define SLAB_CACHE_DMA32 __SF_BIT(_SLAB_CACHE_DMA32) /* DEBUG: Store the last owner for bug hunting */ -#define SLAB_STORE_USER ((slab_flags_t __force)0x00010000U) +#define SLAB_STORE_USER __SF_BIT(_SLAB_STORE_USER) /* Panic if kmem_cache_create() fails */ -#define SLAB_PANIC ((slab_flags_t __force)0x00040000U) +#define SLAB_PANIC __SF_BIT(_SLAB_PANIC) /* * SLAB_TYPESAFE_BY_RCU - **WARNING** READ THIS! * @@ -95,19 +134,19 @@ * Note that SLAB_TYPESAFE_BY_RCU was originally named SLAB_DESTROY_BY_RCU. */ /* Defer freeing slabs to RCU */ -#define SLAB_TYPESAFE_BY_RCU ((slab_flags_t __force)0x00080000U) +#define SLAB_TYPESAFE_BY_RCU __SF_BIT(_SLAB_TYPESAFE_BY_RCU) /* Trace allocations and frees */ -#define SLAB_TRACE ((slab_flags_t __force)0x00200000U) +#define SLAB_TRACE __SF_BIT(_SLAB_TRACE) =20 /* Flag to prevent checks on free */ #ifdef CONFIG_DEBUG_OBJECTS -# define SLAB_DEBUG_OBJECTS ((slab_flags_t __force)0x00400000U) +# define SLAB_DEBUG_OBJECTS __SF_BIT(_SLAB_DEBUG_OBJECTS) #else # define SLAB_DEBUG_OBJECTS 0 #endif =20 /* Avoid kmemleak tracing */ -#define SLAB_NOLEAKTRACE ((slab_flags_t __force)0x00800000U) +#define SLAB_NOLEAKTRACE __SF_BIT(_SLAB_NOLEAKTRACE) =20 /* * Prevent merging with compatible kmem caches. This flag should be used @@ -119,23 +158,23 @@ * - performance critical caches, should be very rare and consulted with s= lab * maintainers, and not used together with CONFIG_SLUB_TINY */ -#define SLAB_NO_MERGE ((slab_flags_t __force)0x01000000U) +#define SLAB_NO_MERGE __SF_BIT(_SLAB_NO_MERGE) =20 /* Fault injection mark */ #ifdef CONFIG_FAILSLAB -# define SLAB_FAILSLAB ((slab_flags_t __force)0x02000000U) +# define SLAB_FAILSLAB __SF_BIT(_SLAB_FAILSLAB) #else # define SLAB_FAILSLAB 0 #endif /* Account to memcg */ #ifdef CONFIG_MEMCG_KMEM -# define SLAB_ACCOUNT ((slab_flags_t __force)0x04000000U) +# define SLAB_ACCOUNT __SF_BIT(_SLAB_ACCOUNT) #else # define SLAB_ACCOUNT 0 #endif =20 #ifdef CONFIG_KASAN_GENERIC -#define SLAB_KASAN ((slab_flags_t __force)0x08000000U) +#define SLAB_KASAN __SF_BIT(_SLAB_KASAN) #else #define SLAB_KASAN 0 #endif @@ -145,10 +184,10 @@ * Intended for caches created for self-tests so they have only flags * specified in the code and other flags are ignored. */ -#define SLAB_NO_USER_FLAGS ((slab_flags_t __force)0x10000000U) +#define SLAB_NO_USER_FLAGS __SF_BIT(_SLAB_NO_USER_FLAGS) =20 #ifdef CONFIG_KFENCE -#define SLAB_SKIP_KFENCE ((slab_flags_t __force)0x20000000U) +#define SLAB_SKIP_KFENCE __SF_BIT(_SLAB_SKIP_KFENCE) #else #define SLAB_SKIP_KFENCE 0 #endif @@ -156,9 +195,9 @@ /* The following flags affect the page allocator grouping pages by mobilit= y */ /* Objects are reclaimable */ #ifndef CONFIG_SLUB_TINY -#define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0x00020000U) +#define SLAB_RECLAIM_ACCOUNT __SF_BIT(_SLAB_RECLAIM_ACCOUNT) #else -#define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0) +#define SLAB_RECLAIM_ACCOUNT 0 #endif #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ =20 diff --git a/mm/slub.c b/mm/slub.c index 2ef88bbf56a3..a93c5a17cbbb 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -306,13 +306,13 @@ static inline bool kmem_cache_has_cpu_partial(struct = kmem_cache *s) =20 /* Internal SLUB flags */ /* Poison object */ -#define __OBJECT_POISON ((slab_flags_t __force)0x80000000U) +#define __OBJECT_POISON __SF_BIT(_SLAB_OBJECT_POISON) /* Use cmpxchg_double */ =20 #ifdef system_has_freelist_aba -#define __CMPXCHG_DOUBLE ((slab_flags_t __force)0x40000000U) +#define __CMPXCHG_DOUBLE __SF_BIT(_SLAB_CMPXCHG_DOUBLE) #else -#define __CMPXCHG_DOUBLE ((slab_flags_t __force)0U) +#define __CMPXCHG_DOUBLE 0 #endif =20 /* --=20 2.43.1 From nobody Sun Feb 8 12:20:50 2026 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (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 5358076907 for ; 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Tue, 20 Feb 2024 16:58:45 +0000 From: Vlastimil Babka Date: Tue, 20 Feb 2024 17:58:27 +0100 Subject: [PATCH 3/3] mm, slab, kasan: replace kasan_never_merge() with SLAB_NO_MERGE 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="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240220-slab-cleanup-flags-v1-3-e657e373944a@suse.cz> References: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> In-Reply-To: <20240220-slab-cleanup-flags-v1-0-e657e373944a@suse.cz> To: Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino Cc: Zheng Yejian , Xiongwei Song , Chengming Zhou , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, Vlastimil Babka X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; 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Since we now have a generic SLAB_NO_MERGE flag, we can instead use it for KASAN caches in addition to SLAB_KASAN in those configurations, and simplify the SLAB_NEVER_MERGE handling. Signed-off-by: Vlastimil Babka Reviewed-by: Andrey Konovalov Reviewed-by: Chengming Zhou --- include/linux/kasan.h | 6 ------ mm/kasan/generic.c | 16 ++++------------ mm/slab_common.c | 2 +- 3 files changed, 5 insertions(+), 19 deletions(-) diff --git a/include/linux/kasan.h b/include/linux/kasan.h index dbb06d789e74..70d6a8f6e25d 100644 --- a/include/linux/kasan.h +++ b/include/linux/kasan.h @@ -429,7 +429,6 @@ struct kasan_cache { }; =20 size_t kasan_metadata_size(struct kmem_cache *cache, bool in_object); -slab_flags_t kasan_never_merge(void); void kasan_cache_create(struct kmem_cache *cache, unsigned int *size, slab_flags_t *flags); =20 @@ -446,11 +445,6 @@ static inline size_t kasan_metadata_size(struct kmem_c= ache *cache, { return 0; } -/* And thus nothing prevents cache merging. */ -static inline slab_flags_t kasan_never_merge(void) -{ - return 0; -} /* And no cache-related metadata initialization is required. */ static inline void kasan_cache_create(struct kmem_cache *cache, unsigned int *size, diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index df6627f62402..d8b78d273b9f 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -334,14 +334,6 @@ DEFINE_ASAN_SET_SHADOW(f3); DEFINE_ASAN_SET_SHADOW(f5); DEFINE_ASAN_SET_SHADOW(f8); =20 -/* Only allow cache merging when no per-object metadata is present. */ -slab_flags_t kasan_never_merge(void) -{ - if (!kasan_requires_meta()) - return 0; - return SLAB_KASAN; -} - /* * Adaptive redzone policy taken from the userspace AddressSanitizer runti= me. * For larger allocations larger redzones are used. @@ -372,13 +364,13 @@ void kasan_cache_create(struct kmem_cache *cache, uns= igned int *size, /* * SLAB_KASAN is used to mark caches that are sanitized by KASAN * and that thus have per-object metadata. - * Currently this flag is used in two places: + * Currently this flag is used in one place: * 1. In slab_ksize() to account for per-object metadata when * calculating the size of the accessible memory within the object. - * 2. In slab_common.c via kasan_never_merge() to prevent merging of - * caches with per-object metadata. + * Additionally, we use SLAB_NO_MERGE to prevent merging of caches + * with per-object metadata. */ - *flags |=3D SLAB_KASAN; + *flags |=3D SLAB_KASAN | SLAB_NO_MERGE; =20 ok_size =3D *size; =20 diff --git a/mm/slab_common.c b/mm/slab_common.c index 238293b1dbe1..7cfa2f1ce655 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -50,7 +50,7 @@ static DECLARE_WORK(slab_caches_to_rcu_destroy_work, */ #define SLAB_NEVER_MERGE (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ SLAB_TRACE | SLAB_TYPESAFE_BY_RCU | SLAB_NOLEAKTRACE | \ - SLAB_FAILSLAB | SLAB_NO_MERGE | kasan_never_merge()) + SLAB_FAILSLAB | SLAB_NO_MERGE) =20 #define SLAB_MERGE_SAME (SLAB_RECLAIM_ACCOUNT | SLAB_CACHE_DMA | \ SLAB_CACHE_DMA32 | SLAB_ACCOUNT) --=20 2.43.1