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b=d5ZpNRl6fvmW83KKSXyUuTyE87rA/bXRA4wLjovZyHCnAYMuO8wFQksZ25hz4kabW JH434phDAKXBga/SdAIN8rSmdTThwWYr3eLBKC7sef82/z3T50sE+puhGzbSemQwHx sp4drReeE2DtOSUY3i5tDnSg79rzuD9TQyFiVJo0tmFzUWYs/OB4Z02B5ZujzRfT3P jaz+8RZNTa80vqKB29hhVyF0wB8CYT/x9b81s+ZHtWOWB+lOt5B4GZMsng6ueqker/ wdg9HMPBBJC0es0q0Cl8cSxwt9+7nSjRgH2+znPUByyINF+3gPCFpp+w3kjZww82An dpdymwrCpN1cg== From: SJ Park To: Cc: SJ Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 06/16] mm/damon/paddr: respect return_max_wsum Date: Sun, 5 Jul 2026 13:57:28 -0700 Message-ID: <20260705205743.98656-7-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260705205743.98656-1-sj@kernel.org> References: <20260705205743.98656-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 58FAF120005 X-Stat-Signature: sucinp9wp15885onwgouwua4oco8uoaw X-Rspam-User: X-HE-Tag: 1783285076-721834 X-HE-Meta: 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 yWzQP8hn aIwr98uLvCd7ViJDWrZTqSxKEmiIO+9IKAyGOj8mHfRE3A0Mze677n/woOjnD9OXn99xLOGF/Hgn5jYISyRGEWhV96g8LFojVdPFCcU13xAxUZXZ2FSRd3PhQKdeGQ4FsdlFFm0BX09XdKtak0usmT4NSXEylXDV7t2EyESAu4ll7FGbsIQ3DOhW/w58ES8cQm+QLyQBJHXfBNkf7RmBcHhpP4PExZzxT9dp9WqJUbCGNJGrcEaAoXMwTYOzXGoofOfwkNLnvm6yycvIGLRsLdeuTVw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: apply_probes() ops implementation in DAMON_PADDR is ignoring return_max_wsum. Respect it. Signed-off-by: SJ Park --- mm/damon/paddr.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 3eba3564a31fc..b85f88a7a38f4 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -172,6 +172,7 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, struct damon_target *t; struct damon_region *r; struct damon_probe *p; + unsigned int max_wsum = 0; damon_for_each_target(t, ctx) { damon_for_each_region(r, t) { @@ -182,7 +183,6 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, if (set_samples) r->sampling_addr = damon_rand(ctx, r->ar.start, r->ar.end); - pa = damon_pa_phys_addr(r->sampling_addr, ctx->addr_unit); folio = damon_get_folio(PHYS_PFN(pa)); @@ -193,9 +193,12 @@ static unsigned int damon_pa_apply_probes(struct damon_ctx *ctx, } if (folio) folio_put(folio); + if (return_max_wsum) + max_wsum = max(damon_probe_hits_wsum(r, false, + ctx), max_wsum); } } - return 0; + return max_wsum; } /* -- 2.47.3