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(pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-hyfv10011601.me.com (Postfix) with ESMTPSA id 75430C800C0; Sun, 3 Dec 2023 00:16:50 +0000 (UTC) From: sxwjean@me.com To: vbabka@suse.cz, 42.hyeyoo@gmail.com, cl@linux.com, linux-mm@kvack.org Cc: penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, roman.gushchin@linux.dev, corbet@lwn.net, keescook@chromium.org, arnd@arndb.de, akpm@linux-foundation.org, gregkh@linuxfoundation.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Xiongwei Song Subject: [PATCH v2 3/3] mm/slub: correct the default value of slub_min_objects in doc Date: Sun, 3 Dec 2023 08:15:01 +0800 Message-Id: <20231203001501.126339-4-sxwjean@me.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231203001501.126339-1-sxwjean@me.com> References: <20231203001501.126339-1-sxwjean@me.com> MIME-Version: 1.0 X-Proofpoint-GUID: Rtt4dbLleoIBTkMumi-JfIC8Wq0WE36R X-Proofpoint-ORIG-GUID: Rtt4dbLleoIBTkMumi-JfIC8Wq0WE36R X-Proofpoint-Virus-Version: =?utf-8?q?vendor=3Dfsecure_engine=3D1=2E1=2E170-?= =?utf-8?q?22c6f66c430a71ce266a39bfe25bc2903e8d5c8f=3A6=2E0=2E517=2C18=2E0?= =?utf-8?q?=2E883=2C17=2E0=2E605=2E474=2E0000000_definitions=3D2022-06-21=5F?= =?utf-8?q?08=3A2022-06-21=5F01=2C2022-06-21=5F08=2C2020-01-23=5F02_signatur?= =?utf-8?q?es=3D0?= X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 spamscore=0 bulkscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2312030000 X-Rspamd-Queue-Id: 45440160009 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: uh6tgqip1qktdytn5fhe7j8axygwsmzi X-HE-Tag: 1701562617-461752 X-HE-Meta: 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 p9iXMR3u 0SCH51kLATilI+6z4iDmURYg7PmDgtBr+M9Hr7L79UX0cj7QUTibTlJq19xew3zHNzLniQBv+GO9fD5oT614bfQLblfIYw0RPoMKDFI6dHfeLyGikxUQfIFKb7Dh9yx3KKUM8lHOfVYiJvEHEJ2evCss7b3qWKIjlNP7GlQ70otos4k4Y0DVkek17jJhuZo7nUxaG/09w2XHSG6wmMl+rnbtxNwimLSKa/+P6WZCdoqDjVSMOZnPO76S/t2jvvqBcgHmH4SEh/GWeGMIj2DPptzX1evOLiUUKlxi1H9qFgP9tCfCPsJmMXttIitmfyQNiOVkc1dFllFEfjBSdYzKe+kgK39Q2+HY7ULKnFeW3HRKBoN+9OrwOQKWguszk85ZktIcc4TIIAKiiuY0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Xiongwei Song There is no a value assigned to slub_min_objects by default, it always is 0 that is initialized by compiler if no assigned value by command line. min_objects is calculated based on processor numbers in calculate_order(). For more details, see commit 9b2cd506e5f2 ("slub: Calculate min_objects based on number of processors.") Signed-off-by: Xiongwei Song --- Documentation/mm/slub.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/mm/slub.rst b/Documentation/mm/slub.rst index be75971532f5..1f4399581449 100644 --- a/Documentation/mm/slub.rst +++ b/Documentation/mm/slub.rst @@ -150,7 +150,7 @@ list_lock once in a while to deal with partial slabs. That overhead is governed by the order of the allocation for each slab. The allocations can be influenced by kernel parameters: -.. slub_min_objects=x (default 4) +.. slub_min_objects=x (default 0) .. slub_min_order=x (default 0) .. slub_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER))