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Mon, 15 Sep 2025 15:11:02 +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 ULXQLIYsyGg9cAAAD6G6ig (envelope-from ); Mon, 15 Sep 2025 15:11:02 +0000 Message-ID: <75bc0c27-3d08-484d-9d22-59bc70f7ee1d@suse.cz> Date: Mon, 15 Sep 2025 17:11:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH slab v5 5/6] slab: Reuse first bit for OBJEXTS_ALLOC_FAIL Content-Language: en-US To: Suren Baghdasaryan Cc: Alexei Starovoitov , Shakeel Butt , bpf , linux-mm , Harry Yoo , Michal Hocko , Sebastian Sewior , Andrii Nakryiko , Kumar Kartikeya Dwivedi , Andrew Morton , Peter Zijlstra , Steven Rostedt , Johannes Weiner , Roman Gushchin References: <20250909010007.1660-6-alexei.starovoitov@gmail.com> From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJnyBr8BQka0IFQAAoJECJPp+fMgqZkqmMQ AIbGN95ptUMUvo6aAdhxaOCHXp1DfIBuIOK/zpx8ylY4pOwu3GRe4dQ8u4XS9gaZ96Gj4bC+ jwWcSmn+TjtKW3rH1dRKopvC07tSJIGGVyw7ieV/5cbFffA8NL0ILowzVg8w1ipnz1VTkWDr 2zcfslxJsJ6vhXw5/npcY0ldeC1E8f6UUoa4eyoskd70vO0wOAoGd02ZkJoox3F5ODM0kjHu Y97VLOa3GG66lh+ZEelVZEujHfKceCw9G3PMvEzyLFbXvSOigZQMdKzQ8D/OChwqig8wFBmV QCPS4yDdmZP3oeDHRjJ9jvMUKoYODiNKsl2F+xXwyRM2qoKRqFlhCn4usVd1+wmv9iLV8nPs 2Db1ZIa49fJet3Sk3PN4bV1rAPuWvtbuTBN39Q/6MgkLTYHb84HyFKw14Rqe5YorrBLbF3rl M51Dpf6Egu1yTJDHCTEwePWug4XI11FT8lK0LNnHNpbhTCYRjX73iWOnFraJNcURld1jL1nV r/LRD+/e2gNtSTPK0Qkon6HcOBZnxRoqtazTU6YQRmGlT0v+rukj/cn5sToYibWLn+RoV1CE Qj6tApOiHBkpEsCzHGu+iDQ1WT0Idtdynst738f/uCeCMkdRu4WMZjteQaqvARFwCy3P/jpK uvzMtves5HvZw33ZwOtMCgbpce00DaET4y/UzsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZ8gcVAUJFhTonwAKCRAiT6fnzIKmZLY8D/9uo3Ut9yi2YCuASWxr7QQZ lJCViArjymbxYB5NdOeC50/0gnhK4pgdHlE2MdwF6o34x7TPFGpjNFvycZqccSQPJ/gibwNA zx3q9vJT4Vw+YbiyS53iSBLXMweeVV1Jd9IjAoL+EqB0cbxoFXvnjkvP1foiiF5r73jCd4PR rD+GoX5BZ7AZmFYmuJYBm28STM2NA6LhT0X+2su16f/HtummENKcMwom0hNu3MBNPUOrujtW khQrWcJNAAsy4yMoJ2Lw51T/5X5Hc7jQ9da9fyqu+phqlVtn70qpPvgWy4HRhr25fCAEXZDp xG4RNmTm+pqorHOqhBkI7wA7P/nyPo7ZEc3L+ZkQ37u0nlOyrjbNUniPGxPxv1imVq8IyycG AN5FaFxtiELK22gvudghLJaDiRBhn8/AhXc642/Z/yIpizE2xG4KU4AXzb6C+o7LX/WmmsWP Ly6jamSg6tvrdo4/e87lUedEqCtrp2o1xpn5zongf6cQkaLZKQcBQnPmgHO5OG8+50u88D9I rywqgzTUhHFKKF6/9L/lYtrNcHU8Z6Y4Ju/MLUiNYkmtrGIMnkjKCiRqlRrZE/v5YFHbayRD dJKXobXTtCBYpLJM4ZYRpGZXne/FAtWNe4KbNJJqxMvrTOrnIatPj8NhBVI0RSJRsbilh6TE m6M14QORSWTLRg== In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Queue-Id: 8765E180016 X-Stat-Signature: 9moue9d9ake6crz9hruyebhk84wjx6ki X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1757949064-850202 X-HE-Meta: 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 5vjiBNMs oHDYg+fAoKzOVm+B09ZBrUAylI6rjqF0ynKtxM5jFdo4i6/odpFfxXCK1xo08gkEKR63Xux6WYjkeoi2uY8EZHKMYBOhZfhtmMDcQ3AFN3dsak7UcqlpD3M4tS9dmRmX1qbIx7Jv3RIeC2Ih9zpiorR9ZOmbqIhdI7ds+rT8tFoQ7NdEquL+YEf72VYKhlbVQBfBkGgXehfGkB7qEsNA3+DRvn2/KukR6ehJmEYK8a0yuDiT/n9Z/L5vc1J6uLDu0W1gIfzAqAp6HpE5JwWGjLsCYrXEQW51zJ+8BDT2SU2C12o8ReI/76HyEx0qkInglDe4JIRwDciq9ptODupvDJJ6F5NHu3v7MJRI6TF5dxmF/Vrah3N/rfRgE89GQm1BNr5MHWJkK8h2rUhNBTfeXOS++JbpgyqkSn/uaNDXl2DBXHh2ePZGo3aR2DkXy9jzjVpG/0zc0/g86YdxU91YW8LnFYtq361gvERWx7m98FRcXkFcyvfmzaoeirGltQI9Dtn/KOg4GO+K+jmElEBIgIoHbZIvXA9GcfoIXVz1t7wwu0PH+Zjbe8+pRiQ== 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: On 9/15/25 17:06, Suren Baghdasaryan wrote: > On Mon, Sep 15, 2025 at 12:51 AM Vlastimil Babka wrote: >> >> >> Shakeel or Suren, will you sent the fix, including Fixes: ? I can put in >> ahead of this series with cc stable in slab/for-next and it shouldn't affect >> the series. > > I will post it today. I was planning to include it as a resping of the > fixup patchset [1] but if you prefer it separately I can do that too. > Please let me know your preference. I think it will be better for patches touching slab (only) to be separate, to avoid conflict potential. [1] seems mm tree material > Another fixup patch I'll be adding is the removal of the `if > (new_slab)` condition for doing mark_failed_objexts_alloc() inside > alloc_slab_obj_exts() [2]. Ack, then it's 2 patches for slab :) Thanks, Vlastimil > [1] https://lore.kernel.org/all/20250909233409.1013367-1-surenb@google.com/ > [2] https://elixir.bootlin.com/linux/v6.16.5/source/mm/slub.c#L1996