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Peter Anvin" , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonas Bonn , Stefan Kristiansson , Stafford Horne Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-openrisc@vger.kernel.org, Muhammad Usama Anjum , Yeoreum Yun X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1416; i=yeoreum.yun@arm.com; h=from:subject:message-id; bh=ywGIUWe4eG9Fo7o6yUhrB9doRugWRJ87ez63n7dCtOo=; b=owEB7QES/pANAwAKAW3Vw9FaxTEzAcsmYgBqsQ1ONrk530uquKqsKokVTVRoFTxsseBHhNflE f+mOH3t5ViJAbMEAAEKAB0WIQQtg+CS3QUzuFh1pJ1t1cPRWsUxMwUCarENTgAKCRBt1cPRWsUx M6i5C/4jxR695g+aGeGrIAp5Hq3EK+JsBl4Xkw64Rh+MB3TRHC7oHN9GqMwjA0R8KVzPNX4iDSb opQlxOkF6mlSjUJGYxtqS1/XQG7tmGB0boaY6gUG0tIPmXOnfHwRWhoUKxqSVO71aiHCKtMDHx3 bvrSwgP3w3zc8ggNJdnUy0wQcByFeJFXtAC1548O4Arfhb/ldpChjkVK3Ttsmgib2gqXAlb7o7e 9kQEaAz1xbJx7+O2HbWqlXUHkPJFlrsGFKRoGNPmv+WuUmj9QEtHRlA1kSF54i0Omq+aH1S2gwL 2LgEZ9bPoknyuFN6E9vrtpQYA1cCcuMTcUiDtUbwVryNrTwccRxsgqHoeJstzUoQ56opOp8sTAF Pb7joEtKSjOyjqcbbb/o2KTzQKHOb0DIdBIOTo6cAmoMHyo+NbTIe28IZaY5snJlAQuUdvNKFNo qjJD+aHKgVLGvNKvkeq2VdMiw2jy3gEJ6IWGuxArucd2EPLm46Ivh5Ej3meNBg4nU8tb0= X-Developer-Key: i=yeoreum.yun@arm.com; a=openpgp; fpr=2D83E092DD0533B85875A49D6DD5C3D15AC53133 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: ED7241C0006 X-Rspam-User: X-Stat-Signature: xmzxi73yh6a73o18bspf9bq11sren49f X-HE-Tag: 1789988249-553326 X-HE-Meta: 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 5ZPsFT0K Xfkr7GHg9TciOIxcz1PEhMoJcmoEz3UchyH5sXQgBXFge6o3/KtNnY7/Bix3SFkLWu8uV8bWuepHX+x0ifEGDC18dL1hkA0kw1OqAezd5EmniR8PJs4y8QzjH/X4uFTpdgbZ3T5ZT6LqPgbakcKd7/HBaqeXvhfH3hKhX/tPal+WDPI2J6wdQSOXmtiydPi4r7JJ030KhhQppQExqF2pzpW0RvJodLOx7rO0gOpwpCk9YAf4hhVhPxRBcBk2apuQFUjNyMOuFZ1fMoMQwPGtSPWoLOcScNl+r7iIkqztbiTzNDNI= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The behaviour of pXdp_get() will change with generic compile-time folded page tables. To prepare for that, replace passing the address of a stack copy of a pud/pmd to walk_pmd/pte_range() with passing the pud/pmd pointer directly so that makes allowing folded entries to be ignored and check the concurrent access proeprly otherwise pXd_same() would return always true. There should be no functional change. Reviewed-by: Muhammad Usama Anjum Signed-off-by: Yeoreum Yun --- mm/vmscan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 836f50814ffae..f771443cd78b6 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -3871,7 +3871,7 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end, walk->mm_stats[MM_NONLEAF_FOUND]++; - if (!walk_pte_range(&val, addr, next, args)) + if (!walk_pte_range(pmd + i, addr, next, args)) continue; walk->mm_stats[MM_NONLEAF_ADDED]++; @@ -3907,7 +3907,7 @@ static int walk_pud_range(p4d_t *p4d, unsigned long start, unsigned long end, if (!pud_present(val) || WARN_ON_ONCE(pud_leaf(val))) continue; - walk_pmd_range(&val, addr, next, args); + walk_pmd_range(pud + i, addr, next, args); if (need_resched() || walk->batched >= MAX_LRU_BATCH) { end = (addr | ~PUD_MASK) + 1; -- 2.43.0