From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C777C43458 for ; Tue, 30 Jun 2026 07:30:50 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6365D6B00BA; Tue, 30 Jun 2026 03:30:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 60E206B00BB; Tue, 30 Jun 2026 03:30:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4FD5D6B00BC; Tue, 30 Jun 2026 03:30:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 2CEAF6B00BA for ; Tue, 30 Jun 2026 03:30:49 -0400 (EDT) Received: from smtpin21.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id B41A51A03B8 for ; Tue, 30 Jun 2026 07:30:48 +0000 (UTC) X-FDA: 84935756976.21.D0AAB74 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf06.hostedemail.com (Postfix) with ESMTP id EB37418000A for ; Tue, 30 Jun 2026 07:30:46 +0000 (UTC) Authentication-Results: imf06.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=EE3n0kau; spf=pass (imf06.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1782804647; b=wdemaJGJr8T9HgT+dZnzS0nCpRwQF7GCyCW8CDWURn6mDBgIQLbOV3awRZ1eeW/rhupsd2 SHsZPGKEmOGGHn6aPF16TwkRX9qsTy0mWRO52W8pjx8z8TaiGbbLJisjnsqlcboseNT7lt 3Z2NKry8Up/rZLokyT2DAThKW6MEcnE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1782804647; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=aYfJUFaTOyFOcoxITqwdEC+0xWofxNWvq6nxR+zhb5U=; b=dLGfgQeLn5oHsiqCQfq7XuJaEbDMeXzBYo+uLZKO1bFm8GBz4/uF4nuu1hrO0zlOmrGtZe VmRx8VBtHUsj9eW8TI9e+kSSh+JVKOD8VXb5NinpRkkkyB3wibBQNI35zbFJiOy9g+0ytW 1K33K/vWFHVSkW45LQhf98W/3PZqAZI= ARC-Authentication-Results: i=1; imf06.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=EE3n0kau; spf=pass (imf06.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 66925600C3; Tue, 30 Jun 2026 07:30:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0053A1F00A3A; Tue, 30 Jun 2026 07:30:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782804646; bh=aYfJUFaTOyFOcoxITqwdEC+0xWofxNWvq6nxR+zhb5U=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=EE3n0kauPqhVKr9TxRm30FJdfFFqyKH36tH8h9mW4eBcMoikc2cB85CBk0KQk6qW1 CQbHB9wnDq+Ay4JOaU0SGbQFWt9U87shatZYVeJJgXWWdYaAOdem/KGCfL9xe0xrQJ XN+oMuItztoMbK/2Om/mJme2CIwUf5r4xlgtdySfx6XDB/WV6MsnQ4ZqR8YDXAtDXq 1oRx2XfJyBE8FtbRqApRxF35g5hYQOdOQZPEkmDhsCe1qCyyw7t2ivZtU8eSKJhJPx wlHjy33kDEFmL5d/o3XhiN8AcoQnlEnZ8VedhTFc4b00z0uEQpf7Mj+IzzHhGnLLtt ncm+Anzl7a9uQ== Message-ID: <102120c6-e560-4f15-b863-375d45af0ace@kernel.org> Date: Tue, 30 Jun 2026 09:30:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/7] mm: use enum migrate_reason instead of int for migration reason parameters Content-Language: en-US To: Ye Liu , Muchun Song , Oscar Salvador , Andrew Morton , David Hildenbrand , Steven Rostedt , Masami Hiramatsu Cc: Zi Yan , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Lorenzo Stoakes , "Liam R. Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Mathieu Desnoyers , Brendan Jackman , Johannes Weiner , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org References: <20260630015331.147174-1-ye.liu@linux.dev> <20260630015331.147174-4-ye.liu@linux.dev> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; 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 BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260630015331.147174-4-ye.liu@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: 8gatkrzcrwmsa4ngk7b6drkzhu93x4s3 X-Rspamd-Queue-Id: EB37418000A X-Rspamd-Server: rspam06 X-HE-Tag: 1782804646-236245 X-HE-Meta: U2FsdGVkX1+FeJeVZ1v+sx/v+kSariJZIrl6J3HpQAWUDfnVu+pGgYUNbCiJxt2f0TQNFFQie/MZXS1sOKWervpC4Y1QnQvhVETJ+kYCwxJ1qrAlniKG+MD8glBhOul8OCYd1MDDiFGAegChHFjzJixOSDpZiV90VA6fgLJKPZlnVlRoLz9W4BKeaeuXMBKZjuF+zrVIUdZhwwBMzgA+gNj674lIszera8B1vJ6JtT85VQBriIKtMY3/2tAHGuvr37JZsToF+/MFfXShfzjcfyOkJ9jDvmWA8+OiG0BSeG09Hxla3uLyz0OB4cXsnRlFkPwFG1ZnD9fKqwt6Hy/iig5Hya0Xw7jOdRxItmR+riapF9OxKZU6BmGFqjZsGaZT7B8Jk9Pzg5OTOLc+Ww+NTySVP2ZQVu80AnyIi6FwvGyfIRLws+dY+/XaadtGqCbZTxNOnpISkTFNyC4yY05B78+Ey1rQai3rrWj/BSMbtaHNOKq1Bt1dV67h69FUuDG/ZXtEHzc1Q0DvVSmOJSMa3LgcGYXW3OSoxNJsCA3qr6AvuzP5NEb4NS76O3IguSx4h5hoLOAstgvvP6ApejLeERe7koxCyzy0xr3UFJqxMGtaJBs2wOL/rMSibTScQp7i1WZn111vrn9jA/HwPJ67X9KdxukWUwgRYbB0eFdsOa4G4lyjVUeFsq+l0+6AGhMW09PPsofxNUkzKKAI2ls3HUDlqVw0x/lmCJY0QI6c7pf2mzZwcT6rO7oMmLEHZOTmeNYce3EBexyyqPGvuqeQKQcggUPEBASGwD7qlSqj6Zahh8tJSIS8p3xJt0v/Fth7H5JtgM7/OeK+g81bgCPJELLWf23AFSqKv3uWjq2Qtz43nzGT96cltd0rG0YnKVNw+Qz9ZOiE1QoFobzeb6TZFaYPMlm7SOEkktuuj+QO4ZbVs8rlRjeI+azRz5L/hLnNASmO++cLRltGVYTOWno 7pWzVhId c9VLixFB6Eaf9OV7r+H5KBsUodFwiYnbaz+BTY+1bvbC3OsrzeF2i2L/XjbRuBBxHbVVyi4nN2Fu67PPjQBL5p2tQOZctFOWpQwyKafnlgn3+dfNZDLnGmnj//VOPPjONaxGF0R7upCBCBswcLlWXecqz0BXSjrbd6HeUtVCySB+M6NRVP75u2Zz5d+fllGfbxgzGkbDQRqT6p6yR3twGxCAdmdyzO9PhTFyK4Tpp1fM2YDVmGf70A5SMv3O8g6HXMlwL4vd2+Wk9iaDSGXWNnK2lljej6c19r1b1Eydv7DjvnrctQHr14jl8wbHXY6pO/H+qS0d7ZnwY+9S69/dLjLNE0j9yBS8Z5FJnrF2dTY0Qt54aP5p/i5Pten+we2694WmbXtOi77azhhXpFupwUjoJp/uccZTbUjxQf1xwH2859Uk= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 6/30/26 03:53, Ye Liu wrote: > Replace all 'int reason' function parameters that carry migrate_reason > values with the proper 'enum migrate_reason' type. This makes the > intent explicit and leverages compiler type checking. The affected > subsystems are: > > - page_owner: __folio_set_owner_migrate_reason(), > folio_set_owner_migrate_reason() > - migrate: migrate_pages(), migrate_pages_sync(), > migrate_pages_batch(), migrate_folios_move(), > migrate_hugetlbs(), unmap_and_move_huge_page() > - hugetlb: move_hugetlb_state(), htlb_allow_alloc_fallback() > - trace: mm_migrate_pages and mm_migrate_pages_start events > > The 'short last_migrate_reason' struct field and internal helper > parameter in page_owner are intentionally left as 'short' since they > store per-page metadata where size matters. > > No functional change. > > Signed-off-by: Ye Liu Reviewed-by: Vlastimil Babka (SUSE)