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Wed, 6 Aug 2025 10:21:21 +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 U3y/AKEsk2jIMAAAD6G6ig (envelope-from ); Wed, 06 Aug 2025 10:21:21 +0000 Date: Wed, 6 Aug 2025 11:21:19 +0100 From: Pedro Falcato To: "Liam R. Howlett" , Andrew Morton , Matthew Wilcox , maple-tree@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] testing/radix-tree/maple: Hack around kfree_rcu not existing Message-ID: References: <20250718172138.103116-1-pfalcato@suse.de> <20250718172138.103116-2-pfalcato@suse.de> <32irwh2uqdg56jrx7mkbcfltu5t4im6l4j44mtq7ylnebtfpt4@te3sbbfuws5q> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <32irwh2uqdg56jrx7mkbcfltu5t4im6l4j44mtq7ylnebtfpt4@te3sbbfuws5q> X-Rspam-User: X-Rspamd-Queue-Id: 1F8D4100003 X-Rspamd-Server: rspam06 X-Stat-Signature: sijkxfg9x1uje74hsxja5n3j5jtudfyp X-HE-Tag: 1754475682-982323 X-HE-Meta: U2FsdGVkX19uhT6A71lgZVT2I6uqZaeb5bCHZlfbnKTXWzFsXC7B71aZUNgOfkooP4K7M/tW69FXIVkBIps8Gpn6KngR4j9n6xqBweqO7z6ZVmAgPFO54eIjkJNOLatbZSt/Q4S8jrTYg1vmkLsVqbi7Wa1Y+n8JHDdU6QajZKjcXzChTEFqZlnVIyJgh9vBEfLqOAYFAd9PO/kMgQI7IMJZZ9/ZSOAv6EGUBn0eEaflShIn328EW/gcOLob27otkjKe6ILRLCSnTdBOJvnp6LIb/j33jV+G4T9D1/t3Fa8WwBWGxAvNq/On6xSGbyuO89jNA3xNthUlHWJ8VZLY85yRFrLTbM01Zmvt9+xzfVC8ZbOc0jFZcYUZjWq7Vcbf8fo7Coqa8BLqlCsjA4PXnvXq/k/4PKV9u12/VWcOwW0/gxDYBRKWijKD6BAwq65nuTXrTuysuTy5f2zF9mibhvSY9iOWsXn6bK+Ds+aCaRkSk8aPjPld+B/ns/C+D+SbGfVbXQwEHtAii0ncsyEYIAfUbQ3d+d8WFKdN71MO738JW+/aUm1HfHJ/B9YcA0dmV6Havie3Dip9lCYDQCmslTz6DH7MDSZgZMhEGLyrsTfzEnq4lRdFVj/gd/rVzCGobgkEuEWM+7UWonVKAHGj63UIUtybQqI9rc589juLtMQoGmym56tzL6ub5MiCOZjfYTwJ4a/YZX8Z1XhQzAt1S8hwUma2kvLjFCeiiS63mxLXUZ4xJVD+gBrfYvIHSFYFfc+jF5FA4jtluOK9clJRir54wMuX0O33BlGzyVCz2tt5WDc65+yCDbziZDD7WzcL3Zve9U718IEBWH4woptfAruWEncX4SMrJ3HGuX1ObMVHW3tfEKLL+NgxQSyV9c+esLKS+W6QfSesym/p1RFogNVAWmP3FWiwh8DslHFPiyfc9QUH+cYaK30VYojN2Pg7ZLIc/BkIJiR/dm1P5tA QhvV/d8h v8zaPSjKk48vRLQTaM3/yxceEHYs+gt/gGO01LyUHxz+uh3xigaXidBailKSD/wUyyw/NsFQhuC2DQrnalaxkzuQaLlFrF27pMplGOB9hshluMIPtEbD/ky4xe+pEHC5cZnqZNL+jrxhkaX2G5x2w4lJG3w2AtNolUae0sjDWrgbqpyN5rLrOfDfdcBrdbjXqJWTb5sztSbYGjmL+B42h/bvQo3ZlKq6OkcrO3xXkGDQt/Tlt/yUXBCLMJ89opCxvwzytFM32E1UDMxwtEFM1utxO/UuINXByJPHBwJBm2ht1ZSQimBf3Y1Cvanq4ljLakUg9pVtJD+iTHiWbpTc+Hi9ihn9sE0Px1bDZMiif5gYLqLZ4zqB1wFc7ooAhArQFJEGWyXTrarTvx1k= 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 Tue, Aug 05, 2025 at 09:26:47PM -0400, Liam R. Howlett wrote: > * Pedro Falcato [250718 13:21]: > > liburcu doesn't have kfree_rcu (or anything similar). Despite that, we > > can hack around it in a trivial fashion, by adding a wrapper. > > > > This wrapper only works for maple_nodes, and not anything else (due to > > us not being able to know rcu_head offsets in any way), and thus we take > > advantage of the type checking to avoid future silent breakage. > > > > Signed-off-by: Pedro Falcato > > Thanks, but shouldn't this be patch 1 so that the testing continues to > work? Yeah, that makes sense, I'll re-order these two on a possible v2. -- Pedro