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d=pankajraghav.com; s=MBO0001; t=1757512602; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=P6za6ztX7suRaul/zgf9vzPbpK/mGuLRtUmptZDqt9E=; b=bQYnO/VB4mMKgAWdyfCqgyZNoUqaOGx8f1vprAq8sFU0ImkF/W6PTmi2O+FnXmSED0S+65 zjR5N5HVYmS7/hMWtn23GdPPQGT4yGeZWtZMONe2RJhQYxJLsZd3T0KvbWTlTCw538J1XL bu9SkrfC/F09MpMXyIW30O+PYMnWD2dA3xHubaD9UNNRM9YLEPdXnXnWphqota/FyoH0zM FvBrcO6QgT8HllZ2657/PEUi3bMLSfTlMVfWSoSsM/p0kV09soaQXuYU3pK+BIPAtRFkgQ SaO2Q43PBJAqa751wMnBosq98p+DdzbxuqfATNMqjtN0/rP05pRrwreCEcXVnw== Date: Wed, 10 Sep 2025 15:56:34 +0200 From: "Pankaj Raghav (Samsung)" To: Jan Kara Cc: Andrew Morton , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v2] readahead: Add trace points Message-ID: <4yz5w6vjnqfidjwss5d4ekprx46u6jityq2b3kq5z7imjj5lpn@de3hz3lglonl> References: <20250909145849.5090-2-jack@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250909145849.5090-2-jack@suse.cz> X-Stat-Signature: 3ukr8n1koxxb1qi168swcjaf6gikmaob X-Rspam-User: X-Rspamd-Queue-Id: 7F108160004 X-Rspamd-Server: rspam10 X-HE-Tag: 1757512606-882401 X-HE-Meta: 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 i6Cx6Ofm 7NrdNVo1y28IWFHVepETZ4md67TxJ/+gA+IgZn1QlfIBdH9wsJz7dDAiw5AVVm/BUB11vWk+1qj7baMatZMtqiRpdH4otf9eyQkxDJvtWJeGCFFYkPYI14k6uu/OoDixhon9GfhVhfKZazDQeQzTLPYxNgpu2Zg0Vp1Ac8ojH7H/lf2yPt2CqiOjACuxufYNHDUGYC68IN2wExMiwXV1plplkEzEMhuvIphF7vxd0k7nmhRJEF+ZjBBMxVwqW1XLxVlh2/07n1RQ3NkAEFsSSGqLKox5dq0zuUADhtheYDLNFqB0rwYni6fXLe3xfZ9WZ1mMd 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: On Tue, Sep 09, 2025 at 04:58:50PM +0200, Jan Kara wrote: > Add a couple of trace points to make debugging readahead logic easier. > > Signed-off-by: Jan Kara > --- > include/trace/events/readahead.h | 132 +++++++++++++++++++++++++++++++ > mm/readahead.c | 8 ++ > 2 files changed, 140 insertions(+) > create mode 100644 include/trace/events/readahead.h > > Changes since v1: > - moved tracepoint from do_page_cache_ra() to page_cache_ra_unbounded() as > that is a more standard function. Looks good. Tested-by: Pankaj Raghav -- Pankaj