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Sat, 25 Apr 2026 07:46:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1777096010; 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=L1U+Lzz1qrYnndGzgY0hK0tfu2XW3iifx6J3/jCY6ZA=; b=GJ0XVQmPVZ3C29V9VBzl1FqGS399NvjW9ZZ3Czra6gwGX4whf9zFV5hgdEw1oKpLtx2Vrv nOXr0u1WiFNxSOlWBJZkxz39rjVqiQyYtumwli3ddvkY4e0tWQCdzP5pzDJWY6DYwSJVhO fDs2HQ5eOXNs6kFxoluFlnI2S1htr6BcfNCCkhXPh6AbZ4uWMKZP2z8m9BmEQHUS3rbONy JKjGz2+vXemyfx8PL/YVHLryudAG4KWcs1jxi/BGdMG/88M9FlI/ataiI5t3HyGvJA906W P6ETUPC3HtEqGg0bc8v/W05+GnJWhyxaIWbLa/FiXFNjm2bcDj5KppO+lFSyzg== From: Manuel Ebner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1777096009; 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=L1U+Lzz1qrYnndGzgY0hK0tfu2XW3iifx6J3/jCY6ZA=; b=uwnlv62WEPzcPWrQ5ZoaPqt6xlfYJLtO8XDZ46qQf0Tp3LSBPrknlCmYXpVhTgI3EyUV5A lElEPJo0PzvigUjm/TwgKEgzqD4q7XAHeC3bvyy0YIZ30oeYz2i4yovhysO26IQ3JLUhhD kgTXPpAXchi2m+OmBWEvOk6ocrVn9lW9g42g4XmLzERtZXzCYpwCuTLu5b1E89WhOlo1LB 9U1vE3A1PQ5VKeQd5194wA1rmfSojZpyB9TWxoezmi4J+Ex42PiXen/asjwsU3sbqSIAgE d5ycbOektijgf7+dIkUSkcFspf3q/6bUKhFzYos3cDwNIYKE3EJCc/AQdsQSyA== To: manuelebner@mailbox.org, corbet@lwn.net Cc: kees@kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, paulmck@kernel.org, rcu@vger.kernel.org, skhan@linuxfoundation.org Subject: [PATCH v3 2/3] Documentation: RCU: adopt new coding style of type-aware kmalloc-family Date: Sat, 25 Apr 2026 07:46:31 +0200 Message-ID: <20260425054630.272707-2-manuelebner@mailbox.org> In-Reply-To: <20260424175553.258412-3-manuelebner@mailbox.org> References: <20260424175553.258412-3-manuelebner@mailbox.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-MBO-RS-META: j4corux7dnuf8pgzx97gu3oi9rymqth4 X-MBO-RS-ID: 47ae089f101825f15ed X-Rspam-User: X-Rspamd-Queue-Id: 292AD160005 X-Rspamd-Server: rspam04 X-Stat-Signature: dzjfzjpux3fnnc9fqd6moux7dxkqfnnd X-HE-Tag: 1777096012-653006 X-HE-Meta: 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 deejMwFK pjbT4PbfU5mEhOIaZygUP9AOMDRWqejr09MV7QP/R56iUg9Mkr4ZOlxZMP3Ra3WcWiWG/ZV6OCEsFJ+NiCXlW5kHgNx9hkPr/zeWVGMorlC5BhTkiRojGj1aPGuMwl4IPqoFwjyCFIwnmSFdRmOTkYa/lRYCKTBEhOpa/XL9r78GKJk/NbpI7nEupMCjSAMqCavt+7J9958B50lCE7s2u7Fa9zlHwpU6OEJzkSiP4DTpewkV3uHNUfSwhHFcHWifBJVdqvlKbjRnBoksYNYrrbvYDf+KLFuxO7K3YGra3Lzr1T70nWD0e7TrBdDkhIKTGS4pVOx4JWzVMKPU= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Update Documentation/RCU/* to reflect new type-aware kmalloc-family as suggested in commit 2932ba8d9c99 ("slab: Introduce kmalloc_obj() and family") ptr = kmalloc(sizeof(*ptr), gfp); -> ptr = kmalloc_obj(*ptr); Signed-off-by: Manuel Ebner Acked-by: Paul E. McKenney --- in the prior mail i forgot the e-mail address of Paul Acked-by see https://lore.kernel.org/linux-doc/7a49fee0-09c8-4a48-9506-d9172ef024b0@paulmck-laptop/ Documentation/RCU/Design/Requirements/Requirements.rst | 6 +++--- Documentation/RCU/listRCU.rst | 2 +- Documentation/RCU/whatisRCU.rst | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/Documentation/RCU/Design/Requirements/Requirements.rst b/Documentation/RCU/Design/Requirements/Requirements.rst index b5cdbba3ec2e..faca5a9c8c12 100644 --- a/Documentation/RCU/Design/Requirements/Requirements.rst +++ b/Documentation/RCU/Design/Requirements/Requirements.rst @@ -206,7 +206,7 @@ non-\ ``NULL``, locklessly accessing the ``->a`` and ``->b`` fields. 1 bool add_gp_buggy(int a, int b) 2 { - 3 p = kmalloc(sizeof(*p), GFP_KERNEL); + 3 p = kmalloc_obj(*p); 4 if (!p) 5 return -ENOMEM; 6 spin_lock(&gp_lock); @@ -228,7 +228,7 @@ their rights to reorder this code as follows: 1 bool add_gp_buggy_optimized(int a, int b) 2 { - 3 p = kmalloc(sizeof(*p), GFP_KERNEL); + 3 p = kmalloc_obj(*p); 4 if (!p) 5 return -ENOMEM; 6 spin_lock(&gp_lock); @@ -264,7 +264,7 @@ shows an example of insertion: 1 bool add_gp(int a, int b) 2 { - 3 p = kmalloc(sizeof(*p), GFP_KERNEL); + 3 p = kmalloc_obj(*p); 4 if (!p) 5 return -ENOMEM; 6 spin_lock(&gp_lock); diff --git a/Documentation/RCU/listRCU.rst b/Documentation/RCU/listRCU.rst index d8bb98623c12..48c7272a4ccc 100644 --- a/Documentation/RCU/listRCU.rst +++ b/Documentation/RCU/listRCU.rst @@ -276,7 +276,7 @@ The RCU version of audit_upd_rule() is as follows:: list_for_each_entry(e, list, list) { if (!audit_compare_rule(rule, &e->rule)) { - ne = kmalloc(sizeof(*entry), GFP_ATOMIC); + ne = kmalloc_obj(*entry, GFP_ATOMIC); if (ne == NULL) return -ENOMEM; audit_copy_rule(&ne->rule, &e->rule); diff --git a/Documentation/RCU/whatisRCU.rst b/Documentation/RCU/whatisRCU.rst index a1582bd653d1..770aab8ea36a 100644 --- a/Documentation/RCU/whatisRCU.rst +++ b/Documentation/RCU/whatisRCU.rst @@ -468,7 +468,7 @@ uses of RCU may be found in listRCU.rst and NMI-RCU.rst. struct foo *new_fp; struct foo *old_fp; - new_fp = kmalloc(sizeof(*new_fp), GFP_KERNEL); + new_fp = kmalloc_obj(*new_fp); spin_lock(&foo_mutex); old_fp = rcu_dereference_protected(gbl_foo, lockdep_is_held(&foo_mutex)); *new_fp = *old_fp; @@ -570,7 +570,7 @@ The foo_update_a() function might then be written as follows:: struct foo *new_fp; struct foo *old_fp; - new_fp = kmalloc(sizeof(*new_fp), GFP_KERNEL); + new_fp = kmalloc_obj(*new_fp); spin_lock(&foo_mutex); old_fp = rcu_dereference_protected(gbl_foo, lockdep_is_held(&foo_mutex)); *new_fp = *old_fp; -- 2.53.0