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Message-ID: <e1fe10474fc06aaf24b17fcd916efffcc8c13f78.1734407924.git-series.apopple@nvidia.com> Date: Tue, 17 Dec 2024 16:13:03 +1100 From: Alistair Popple <apopple@...dia.com> To: akpm@...ux-foundation.org, dan.j.williams@...el.com, linux-mm@...ck.org Cc: Alistair Popple <apopple@...dia.com>, lina@...hilina.net, zhang.lyra@...il.com, gerald.schaefer@...ux.ibm.com, vishal.l.verma@...el.com, dave.jiang@...el.com, logang@...tatee.com, bhelgaas@...gle.com, jack@...e.cz, jgg@...pe.ca, catalin.marinas@....com, will@...nel.org, mpe@...erman.id.au, npiggin@...il.com, dave.hansen@...ux.intel.com, ira.weiny@...el.com, willy@...radead.org, djwong@...nel.org, tytso@....edu, linmiaohe@...wei.com, david@...hat.com, peterx@...hat.com, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org, nvdimm@...ts.linux.dev, linux-cxl@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, jhubbard@...dia.com, hch@....de, david@...morbit.com Subject: [PATCH v4 20/25] mm/mlock: Skip ZONE_DEVICE PMDs during mlock At present mlock skips ptes mapping ZONE_DEVICE pages. A future change to remove pmd_devmap will allow pmd_trans_huge_lock() to return ZONE_DEVICE folios so make sure we continue to skip those. Signed-off-by: Alistair Popple <apopple@...dia.com> --- mm/mlock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/mlock.c b/mm/mlock.c index cde076f..3cb72b5 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -368,6 +368,8 @@ static int mlock_pte_range(pmd_t *pmd, unsigned long addr, if (is_huge_zero_pmd(*pmd)) goto out; folio = pmd_folio(*pmd); + if (folio_is_zone_device(folio)) + goto out; if (vma->vm_flags & VM_LOCKED) mlock_folio(folio); else -- git-series 0.9.1
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