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AJvYcCUsba6KaMjBkqMmiJ+rstCe5YA7PfVcTItW60oIfRjYKcCXjdxuDj4i+dEHVAzGGTL0AlgB0y6HfA==@kvack.org X-Gm-Message-State: AOJu0Yx1QrOj8BCTZ0VU1RW8i35jWx5Vftf7Ljsju5CYOzdCoOlghrcy CRPx2SFrOtErPgDmcChVOYRp211JtNeD/4FLIN1ZeC1uqIVovlCo5qMD4iv8BYh5Qm0cQslUI2q h6E9C+Vz/RviO/MZ+6mrs/0nYuMs= X-Google-Smtp-Source: AGHT+IHEwJR/63PnU9Y4bPwec530PsaNhXhlYIp/JApfU/r4NiezH+1B/bowH9/eomqUHg1+o8FEKPoIRZs3QQUeGJ4= X-Received: by 2002:a05:6102:d8e:b0:4ad:571b:c16e with SMTP id ada2fe7eead31-4ad62b61de6mr13769972137.3.1731984705167; Mon, 18 Nov 2024 18:51:45 -0800 (PST) MIME-Version: 1.0 References: <20241107101005.69121-1-21cnbao@gmail.com> <87iksy5mkh.fsf@yhuang6-desk2.ccr.corp.intel.com> <28446805-f533-44fe-988a-71dcbdb379ab@gmail.com> <20241118095636.GA2668855@google.com> <20241119024513.GB2668855@google.com> In-Reply-To: <20241119024513.GB2668855@google.com> From: Barry Song <21cnbao@gmail.com> Date: Tue, 19 Nov 2024 15:51:34 +1300 Message-ID: Subject: Re: [PATCH RFC v2 0/2] mTHP-friendly compression in zsmalloc and zram based on multi-pages To: Sergey Senozhatsky Cc: Usama Arif , "Huang, Ying" , linux-mm@kvack.org, akpm@linux-foundation.org, axboe@kernel.dk, bala.seshasayee@linux.intel.com, chrisl@kernel.org, david@redhat.com, hannes@cmpxchg.org, kanchana.p.sridhar@intel.com, kasong@tencent.com, linux-block@vger.kernel.org, minchan@kernel.org, nphamcs@gmail.com, surenb@google.com, terrelln@fb.com, v-songbaohua@oppo.com, wajdi.k.feghali@intel.com, willy@infradead.org, yosryahmed@google.com, yuzhao@google.com, zhengtangquan@oppo.com, zhouchengming@bytedance.com, ryan.roberts@arm.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: 4BE46A0004 X-Stat-Signature: 9r9ttzys8di6i3nr577xuqn3wuobc34z X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1731984670-452656 X-HE-Meta: U2FsdGVkX1/QDdqmJ03r1LEvfUHm2p+dg4NMXs/ezGGyFRGBJtxEQTNLICESk2QJ5WHJAazrn04f+6FZlmkOAu1c1ETdAzeQleQzp+mf1Z+sr0AS5zKofriPOyENmaU0yTgIeuJjforVB0GNsSO1t/j50NE18tu8IBIB7mV2p5uGAdznyVnNaJm0cwVLyC6c2dmcqaGNUFACRxBrXPIDjvtEP6wkkE9qtZ6j4OH0dauyGAwQTlGhWNI9dJ8v3PR8kq/mbJio4h6SEHWDPFX5LcUlzWlorCzoMYhDbMXIRDx/6HAOWIOo/DLdFY2F7Lk9hCXaKh6Z0DFl/jYqcay/U4OxHEHfYKW8ck+lZYoPLh3d9yFJrZYVtkj7mLd075MHTUOrDzaRNPxBHwqxbj91a3AWQ7SACnhIth3HVaB5BcaQTKzJhEHUCGkDbVMQKh1b83jLaUKBKchpbJE37KTlFJjfpkPNJ3cpOni8RehUOIVpjL5cLf/JxsgC+XSaIxt+csywx4NEytfMfdVfa51sHCfdj6KPRtetI8VcR0Y5HW8/BE82ONc3Vjgi9nE5kdXB9AcmoW68flB65TZHS1h1IXBcc/8t8exbUQGWSNVbvKkJlYh+oOy0r9YWhqIzyI6qSeVEcmBtei2WbcNclRjhgN1EI8OSMgVuj39Swr1ZnUjiORPnPs8WmgZWVI0QNnuJC+9HEFfCljuR4iYVERs9acSHO7JPBWt47tktm+01hjelSU21sJHKU52OqclmpsQEQ0KyVxHgQz5stWSEc91AatNyn1nqS26AsgtDIpkq9JuK0fIvM92edFYAu76gT7ZZkou5fXbOmNSCQehgMItEQZAyHYFWOctfLX8GoUIVvJybYlbzzRVQPIjmAB77Ag6Tc8l8OvSE6/9kDPOcd5//3CS0rfYmg8BoZtL/uF6FoX00X8eG7XHBxcN2sG2+WIBA+/EDSuL3NIsIuej3VBB TklfpBl5 uESDhWcROT8rbrJ7ET3noxI36PKfrgzF4aQSc0cDuiy1FcLI9kBpZvYE+6w1g1sOQ5iGBZU1C9QE9EwlZFwszrbjFUhDGFi1aT6nrJ2Fw7Kvf3H/+LsC5r1MCrv6Ra1vQkwU9YgLYXFrwRuj5BtbM9wiwBr1LMOrv36Yi9v80nWpZb30wUq0tOe5fESNhSdmyc+Hjz98UjsZIGdUhor5/1l23Ef44JtWrOpiFub4IQydApX2D7f8MZQ6Gb/njUgEtabpkwV+o8iXPvKesBt7Uq5f6szXpWS3pMkmPSPfN0JFo7Rf4B/VPm5JoHq8KMVF4ByXCAYqMiHUSdjwqOo2k4WJLCa+Aqm/E6qHYSuHgfcOa+Y8C3uEKxb7RdHsI8jy5h/qpS6mSqiHOOCw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000542, 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, Nov 19, 2024 at 3:45=E2=80=AFPM Sergey Senozhatsky wrote: > > On (24/11/19 09:27), Barry Song wrote: > > On Mon, Nov 18, 2024 at 10:56=E2=80=AFPM Sergey Senozhatsky > > wrote: > > > > > > On (24/11/12 09:31), Barry Song wrote: > > > [..] > > Yes, some filesystems also support mTHP. A simple grep > > command can list them all: > > > > fs % git grep mapping_set_large_folios > > afs/inode.c: mapping_set_large_folios(inode->i_mapping); > > afs/inode.c: mapping_set_large_folios(inode->i_mapping); > > bcachefs/fs.c: mapping_set_large_folios(inode->v.i_mapping); > > erofs/inode.c: mapping_set_large_folios(inode->i_mapping); > > nfs/inode.c: mapping_set_large_folios(inode->i_mappi= ng); > > smb/client/inode.c: mapping_set_large_folios(inode->i_mappi= ng); > > zonefs/super.c: mapping_set_large_folios(inode->i_mapping); > > Yeah, those are mostly not on-disk file systems, or not filesystems > that people use en-mass for r/w I/O workloads (e.g. vfat, ext4, etc.) there is work to bring up ext4 large folios though :-) https://lore.kernel.org/linux-fsdevel/20241022111059.2566137-1-yi.zhang@hua= weicloud.com/