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b=aP2bHBVKWXUKPdwARM5mBbkAco1AoG3cGAYwpasfwtSu0kpmv0qKtPKiqg9p+cg+m B5RKz0DUji59WKUpNBmnUfppHapP3m1EPG/9KN+kLA+L9yTSISErT1p/iRxiFhTbBe oVMSbjmGCd0ihlmnTVdfVUpne+EbVkA5iTzONJMW1FRiIheo2BHA9zZYNbrConG/SD ydLsrfUTGiObElvrkPS/RtCUaqcTO8QirdT1EDEZmBoRbkZC3wRJ9r3qP1yDa/1Xlq rCv4lMzR+2OZqciKheK4XI9rgBEasqySGIqW1Tcwx9n0Hs5+41B9O1xPa+1ILG422T EI20cr9O/A+YQ== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , Honggyu Kim , damon@lists.linux.dev, kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 1/3] mm/damon/paddr: use alloc_migartion_target() with no migration fallback nodemask Date: Mon, 16 Jun 2025 10:23:44 -0700 Message-Id: <20250616172346.67659-2-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250616172346.67659-1-sj@kernel.org> References: <20250616172346.67659-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: A050940006 X-Rspamd-Server: rspam07 X-Stat-Signature: gtu7fcwxj3rwmfwfub8zicrmgyfd67zi X-Rspam-User: X-HE-Tag: 1750094632-292915 X-HE-Meta: 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 +8vNEeqg 7IxkcmHZivTuVjRxqU5TrBh9uiC5HtCfL3MU3754AteOPKFYqdVSPAc8ahJW0ZUvbGeEETFJ7Whu8KrqlnW3GIVPevC8D5Hvr1fwpgga8jbufOYgnnkIHinAeFkWdI+EaraZB2/9hNxOtT0Y5ccoxVSGxHicx3QyczP0ZzUeNojl7oQglQRMmQEG1gHr6fxg5tykqLfoE5lNW4C5gUXLlSuK9oE2xCRxYLNEb3lG7SxmFhc9UnE2qjcIgKupk87RlfJAE93PcSrCjGXFXliTqhQwBZQ== 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: DAMOS_MIGRATE_{HOT,COLD} implementation resembles that for demote_folio_list(). Because those are not only for demotion but general folio migrations, it makes more sense to behave similarly to move_pages() system call. Make the behavior more similar to move_pages(), by using alloc_migration_target() instead of alloc_migrate_folio(), without fallback nodemask. Signed-off-by: SeongJae Park --- mm/damon/paddr.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 4102a8c5f992..fcab148e6865 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -386,7 +386,6 @@ static unsigned int __damon_pa_migrate_folio_list( int target_nid) { unsigned int nr_succeeded = 0; - nodemask_t allowed_mask = NODE_MASK_NONE; struct migration_target_control mtc = { /* * Allocate from 'node', or fail quickly and quietly. @@ -396,7 +395,6 @@ static unsigned int __damon_pa_migrate_folio_list( .gfp_mask = (GFP_HIGHUSER_MOVABLE & ~__GFP_RECLAIM) | __GFP_NOWARN | __GFP_NOMEMALLOC | GFP_NOWAIT, .nid = target_nid, - .nmask = &allowed_mask }; if (pgdat->node_id == target_nid || target_nid == NUMA_NO_NODE) @@ -406,7 +404,7 @@ static unsigned int __damon_pa_migrate_folio_list( return 0; /* Migration ignores all cpuset and mempolicy settings */ - migrate_pages(migrate_folios, alloc_migrate_folio, NULL, + migrate_pages(migrate_folios, alloc_migration_target, NULL, (unsigned long)&mtc, MIGRATE_ASYNC, MR_DAMON, &nr_succeeded); -- 2.39.5