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Shutemov\"" , Ryan Roberts , =?utf-8?q?=22Michal_Koutn=C3=BD=22?= , Roman Gushchin , "\"Zach O'Keefe\"" , Hugh Dickins , Luis Chamberlain , Andrew Morton , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, Mark Brown Subject: Re: [PATCH v5 8/8] mm: huge_memory: enable debugfs to split huge pages to any order. 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dYq/wJZZEQEWPQTJM4ZQAO0p1FAJVnvMDOQhxS9hFOmn6CJ19opeu2oaJCuErz1PnX8hls2O43+SmeW4= 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: --=_MailMate_0E4A5337-559B-4F0D-8587-2225B84783C8_= Content-Type: text/plain On 4 Mar 2024, at 4:50, Aishwarya TCV wrote: > On 01/03/2024 21:10, Zi Yan wrote: >> On 1 Mar 2024, at 15:02, Zi Yan wrote: >> >>> On 1 Mar 2024, at 14:37, Zi Yan wrote: >>> >>>> On 1 Mar 2024, at 4:51, Aishwarya TCV wrote: >>>> >>>>> On 26/02/2024 20:55, Zi Yan wrote: >>>>>> From: Zi Yan >>>>>> >>>>>> It is used to test split_huge_page_to_list_to_order for pagecache THPs. >>>>>> Also add test cases for split_huge_page_to_list_to_order via both >>>>>> debugfs. >>>>>> >>>>>> Signed-off-by: Zi Yan >>>>>> --- >>>>>> mm/huge_memory.c | 34 ++++-- >>>>>> .../selftests/mm/split_huge_page_test.c | 115 +++++++++++++++++- >>>>>> 2 files changed, 131 insertions(+), 18 deletions(-) >>>>>> >>>>> >>>>> Hi Zi, >>>>> >>>>> When booting the kernel against next-master(20240228)with Arm64 on >>>>> Marvell Thunder X2 (TX2), the kselftest-mm test 'split_huge_page_test' >>>>> is failing in our CI (with rootfs over NFS). I can send the full logs if >>>>> required. >>>>> >>>>> A bisect (full log below) identified this patch as introducing the >>>>> failure. Bisected it on the tag "next-20240228" at repo >>>>> "https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git". >>>>> >>>>> This works fine on Linux version 6.8.0-rc6 >>>> >>>> Hi Aishwarya, >>>> >>>> Can you try the attached patch and see if it fixes the failure? I changed >>>> the test to accept XFS dev as input, mount XFS on a temp folder under /tmp, >>>> and skip if no XFS is mounted. >>> >>> Please try this updated one. It allows you to specify a XFS device path >>> in SPLIT_HUGE_PAGE_TEST_XFS_PATH env variable, which is passed to >>> split_huge_page_test in run_vmtests.sh. It at least allow CI/CD to run >>> the test without too much change. >> >> OK. This hopefully will be my last churn. Now split_huge_page_test accepts >> a path that is backed by XFS and run_vmtest.sh creates a XFS image in /tmp, >> mounts it in /tmp, and gives the path to split_huge_page_test. I tested >> it locally and it works. Let me know if you have any issue. Thanks. >> >> -- >> Best Regards, >> Yan, Zi > > Hi Zi, > > Tested the patch by applying it on next-20240304. Logs from our CI with > rootfs over nfs is attached below. "Bail out! cannot remove tmp dir: > Directory not empty" is still observed. Hi Aishwarya, Do you have the config file for the CI kernel? And /tmp is also on nfs? Any detailed information about CI machine environment? I cannot reproduce the error locally, either on bare metal or VM. Maybe because my /tmp is not NFS mounted? > > > Test run log: > # # ------------------------------ > # # running ./split_huge_page_test > # # ------------------------------ > # # TAP version 13 > # # 1..12 > # # ok 1 Split huge pages successful > # # ok 2 Split PTE-mapped huge pages successful > # # # Please enable pr_debug in split_huge_pages_in_file() for more info. > # # # Please check dmesg for more information > # # ok 3 File-backed THP split test done > <6>[ 639.821657] split_huge_page (111099): drop_caches: 3 > <6>[ 639.821657] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 4 # SKIP Pagecache folio split skipped > <6>[ 645.392184] split_huge_page (111099): drop_caches: 3 > <6>[ 645.392184] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 5 # SKIP Pagecache folio split skipped > <6>[ 650.938248] split_huge_page (111099): drop_caches: 3 > <6>[ 650.938248] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 6 # SKIP Pagecache folio split skipped > <6>[ 656.500149] split_huge_page (111099): drop_caches: 3 > <6>[ 656.500149] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 7 # SKIP Pagecache folio split skipped > <6>[ 662.044085] split_huge_page (111099): drop_caches: 3 > <6>[ 662.044085] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 8 # SKIP Pagecache folio split skipped > <6>[ 667.591841] split_huge_page (111099): drop_caches: 3 > <6>[ 667.591841] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 9 # SKIP Pagecache folio split skipped > <6>[ 673.172441] split_huge_page (111099): drop_caches: 3 > <6>[ 673.172441] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 10 # SKIP Pagecache folio split skipped > <6>[ 678.726263] split_huge_page (111099): drop_caches: 3 > <6>[ 678.726263] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 11 # SKIP Pagecache folio split skipped > <6>[ 684.272851] split_huge_page (111099): drop_caches: 3 > <6>[ 684.272851] split_huge_page (111099): drop_caches: 3 > # # # No large pagecache folio generated, please provide a filesystem > supporting large folio > # # ok 12 # SKIP Pagecache folio split skipped > # # Bail out! cannot remove tmp dir: Directory not empty > # # # Totals: pass:3 fail:0 xfail:0 xpass:0 skip:9 error:0 > # # [FAIL] > # not ok 51 split_huge_page_test # exit=1 > # # ------------------ > > Thanks, > Aishwarya -- Best Regards, Yan, Zi --=_MailMate_0E4A5337-559B-4F0D-8587-2225B84783C8_= Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQJDBAEBCgAtFiEE6rR4j8RuQ2XmaZol4n+egRQHKFQFAmXl4ZIPHHppeUBudmlk aWEuY29tAAoJEOJ/noEUByhUXzEP/iiQ7nzdiYwswAYzlikNg7xdo8ol94aDks0m 6N3gJ7RW8AQlYsNofqWpwmvIac02v9YS+9kMtKooVAX90OOEDmLFt/0rC7SyTTqH uK21xTwbVHAoff4nmAcaUoNgLSMysDXahfLC+sz9APaEoFNFPy5Xo+WM+Z20yVOG Nm+ChkiY0aksFUbsgiDwenAu5//gAF1sQEog9O8bJfw0cOhkZAPeJeSvGzGydJVT r5trclr8D9XWHnXpmGP9I8tLYQQyTC5JAR5oz8pRabQbTllwyxDss9COMG+Q4445 jGjwFHoTVmJeVzedri4dHOJ9ig/7dmShnPDOGdHf00eMHQEXArYhjFtLF1Rqr80H 1G+r1dxSSRNuF2aC8cgnFvF90WvLjFvfKj7GN4sWgVZE9Pw71qOxpzF6D71cTMrk vDVEsIVifUH6p2Cfm33ChXTJu0AhUzx+vlKRrotI9wzxvYbY7r8PF0uYizGMx01Q OmtV2HuV1RfZnRh/Q+0dCU1KKh0UThVDii8LGoBnoHdG5cExBvr2DGeAHi9WwXUI bzmtQXvtw3xwmul70UV8k1r0c/MDROKNGQlQK3fLeCiqkIBZxmk2CeUAP1REL3un jWp3ipQP0S4tiN6SzkRYLBrxH2AEOm3BpaxrD4DttvET/7bxog5k6S20mTJkO6Sk VFyrYNgu =M0Km -----END PGP SIGNATURE----- --=_MailMate_0E4A5337-559B-4F0D-8587-2225B84783C8_=--