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Fri, 15 Sep 2023 10:51:23 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 1/6] filemap: make the folio order calculation shareable Thread-Topic: [PATCH 1/6] filemap: make the folio order calculation shareable Thread-Index: AQHZ57ovaMdf9q/cjECRh1BbWSoXsQ== Date: Fri, 15 Sep 2023 09:51:23 +0000 Message-ID: <20230915095042.1320180-2-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNKsWRmVeSWpSXmKPExsWy7djP87oymiypBr+OC1vMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKC6blNSczLLU In27BK6MviXLmArOK1Z8a2hmbGDcLt3FyMkhIWAisfNbA2sXIxeHkMAKRonNO3axQzhfGCWe rroD5XxmlNgztZEVpuXmwTNMEInljBKtExqY4aq69r2HajnDKDHp5wQ2CGclo8S1mc2MIP1s ApoS+05uAqsSEZjNKnF4cQdYglmgTmLNs1ksILawgIfEsr17mEBsEQF/iVv7tzND2HoSrU1f wWwWAVWJqe/us4PYvALWEj37e4DiHBycAjYS73+Ug4QZBWQlHq38xQ4xXlzi1pP5TBA/CEos mr2HGcIWk/i36yEbhK0jcfb6E0YI20Bi69J9LBC2ksSfjoVQZ+pJ3Jg6hQ3C1pZYtvA1M8QJ ghInZz5hAflLQqCJS+Lsrd/QAHOR6G5/yg5hC0u8Or4FypaROD25h2UCo/YsJPfNQrJjFpId s5DsWMDIsopRPLW0ODc9tdgoL7Vcrzgxt7g0L10vOT93EyMwvZ3+d/zLDsblrz7qHWJk4mA8 xCjBwawkwstmy5QqxJuSWFmVWpQfX1Sak1p8iFGag0VJnFfb9mSykEB6YklqdmpqQWoRTJaJ g1OqgSno/8LS5s8ZRx32KzrzXJnZszVv8dqLnhoH7iStPqR8O+X5ldSQ3oCkjXzulTqrJmU7 s+pFO4l4vdLLnr7RQrpSM+Hg6i7pz92nvdstw0REgxcYn3PX4/ff+/nfe93cLHPmrdseJcfu jZ07IZXjh+n+GI3aP8sLHXgslb9/8paUuH7oSNi0fO9lTtXT37z7YO96M+HaYr3csxecE5+K qj2YkCJuIT3/7BGlOUp/m6y72DtWP7wWfSfPY49Tan/DzifnThwWvis2my3p+4Rv7jUPtCLu Bm4/duKTYZdpsa7wVY4u6U2v/4r6+OWXMRs8ncDyY8Ee5z2uKQuyL/Dayu5jbl2k8+sOf6jI 53uqbUosxRmJhlrMRcWJADmRL4LeAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCKsWRmVeSWpSXmKPExsVy+t/xe7rSmiypBv+2WVjMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKD2bovzSklSF jPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTublNSczLLUIn27BL2MviXLmArOK1Z8a2hm bGDcLt3FyMkhIWAicfPgGaYuRi4OIYGljBJH/i5lgkjISGz8cpUVwhaW+HOtiw3EFhL4yCjR tqoYouEMo0RT13VGCGclo8SMa4cZQarYBDQl9p3cxA6SEBGYzSpxeHEHWIJZoE5izbNZLCC2 sICHxLK9e8DWiQj4Smw5sYUNwtaTaG36ygxiswioSkx9d58dxOYVsJbo2d8DFOcA2mYtMWu6 F4jJKWAj8f5HOUgFo4CsxKOVv9ghNolL3HoyH+oZAYkle84zQ9iiEi8f/4N6TEfi7PUnjBC2 gcTWpftYIGwliT8dC6Eu1pO4MXUKG4StLbFs4WtmiGsEJU7OfMIygVF6FpJ1s5C0zELSMgtJ ywJGllWMIqmlxbnpucVGesWJucWleel6yfm5mxiByWnbsZ9bdjCufPVR7xAjEwfjIUYJDmYl EV42W6ZUId6UxMqq1KL8+KLSnNTiQ4ymwBCayCwlmpwPTI95JfGGZgamhiZmlgamlmbGSuK8 ngUdiUIC6YklqdmpqQWpRTB9TBycUg1MOgkHnd78zdr97NxpyRXvVsU97kpbOF1j7f/qVz6L d9rVr7+wKHxrQ2Cc8zaG75Oa6vqcf29fVn9bVEzRY+d2mytP7yaaC89eu9zRYVa497G7Xdec bNK9DnEt0XkuuGrq80O/X39QVk3/dqZpcc/Pnw+27FaKnb8+2pkl91m7uq/3/17DE4EzJ7w4 aTnre88tzirWnSYW1gtV3oY4XRUVTOZayHGlf//m8DTDdu8PWkEZfYJZ874pMrCqT5VWLlQv ntI3s++DK8/i/8Hv47bcm2l3yUlRzptPZbOqRJzpF+dNGl6l5Xe3zspKKXgVotOhdu5Nopzv 15DUy8m3XZMyX0U1MeYUnC27dKy5cCu3EktxRqKhFnNRcSIANnSnRtcDAAA= X-CMS-MailID: 20230915095124eucas1p1eb0e0ef883f6316cf14c349404a51150 X-Msg-Generator: CA X-RootMTR: 20230915095124eucas1p1eb0e0ef883f6316cf14c349404a51150 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095124eucas1p1eb0e0ef883f6316cf14c349404a51150 References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org To make the code that clamps the folio order in the __filemap_get_folio routine reusable to others, move and merge it to the fgf_set_order new subroutine (mapping_size_order), so when mapping the size at a given index, the order calculated is already valid and ready to be used when order is retrieved from fgp_flags with FGF_GET_ORDER. Signed-off-by: Daniel Gomez --- fs/iomap/buffered-io.c | 6 ++++-- include/linux/pagemap.h | 42 ++++++++++++++++++++++++++++++++++++----- mm/filemap.c | 8 -------- 3 files changed, 41 insertions(+), 15 deletions(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index ae8673ce08b1..bfd9a22a9464 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -546,12 +546,14 @@ EXPORT_SYMBOL_GPL(iomap_is_partially_uptodate); struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos, size_t len) { fgf_t fgp = FGP_WRITEBEGIN | FGP_NOFS; + pgoff_t index = pos >> PAGE_SHIFT; + struct address_space *mapping = iter->inode->i_mapping; if (iter->flags & IOMAP_NOWAIT) fgp |= FGP_NOWAIT; - fgp |= fgf_set_order(len); + fgp |= fgf_set_order(mapping, index, len); - return __filemap_get_folio(iter->inode->i_mapping, pos >> PAGE_SHIFT, + return __filemap_get_folio(mapping, index, fgp, mapping_gfp_mask(iter->inode->i_mapping)); } EXPORT_SYMBOL_GPL(iomap_get_folio); diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 351c3b7f93a1..7af5636eb32a 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -576,6 +576,39 @@ typedef unsigned int __bitwise fgf_t; #define FGP_WRITEBEGIN (FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE) +/** + * mapping_size_order - Get maximum folio order for the given file size. + * @mapping: Target address_space. + * @index: The page index. + * @size: The suggested size of the folio to create. + * + * This returns a high order for folios (when supported) based on the file size + * which the mapping currently allows at the given index. The index is relevant + * due to alignment considerations the mapping might have. The returned order + * may be less than the size passed. + * + * Return: The order. + */ +static inline unsigned int mapping_size_order(struct address_space *mapping, + pgoff_t index, size_t size) +{ + unsigned int order = ilog2(size); + + if ((order <= PAGE_SHIFT) || (!mapping_large_folio_support(mapping))) + return 0; + else + order = order - PAGE_SHIFT; + + /* If we're not aligned, allocate a smaller folio */ + if (index & ((1UL << order) - 1)) + order = __ffs(index); + + order = min_t(size_t, order, MAX_PAGECACHE_ORDER); + + /* Order-1 not supported due to THP dependency */ + return (order == 1) ? 0 : order; +} + /** * fgf_set_order - Encode a length in the fgf_t flags. * @size: The suggested size of the folio to create. @@ -587,13 +620,12 @@ typedef unsigned int __bitwise fgf_t; * due to alignment constraints, memory pressure, or the presence of * other folios at nearby indices. */ -static inline fgf_t fgf_set_order(size_t size) +static inline fgf_t fgf_set_order(struct address_space *mapping, pgoff_t index, + size_t size) { - unsigned int shift = ilog2(size); + unsigned int order = mapping_size_order(mapping, index, size); - if (shift <= PAGE_SHIFT) - return 0; - return (__force fgf_t)((shift - PAGE_SHIFT) << 26); + return (__force fgf_t)(order << 26); } void *filemap_get_entry(struct address_space *mapping, pgoff_t index); diff --git a/mm/filemap.c b/mm/filemap.c index 582f5317ff71..e285fffa9bcf 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1917,14 +1917,6 @@ struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index, if (WARN_ON_ONCE(!(fgp_flags & (FGP_LOCK | FGP_FOR_MMAP)))) fgp_flags |= FGP_LOCK; - if (!mapping_large_folio_support(mapping)) - order = 0; - if (order > MAX_PAGECACHE_ORDER) - order = MAX_PAGECACHE_ORDER; - /* If we're not aligned, allocate a smaller folio */ - if (index & ((1UL << order) - 1)) - order = __ffs(index); - do { gfp_t alloc_gfp = gfp; From patchwork Fri Sep 15 09:51:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Gomez X-Patchwork-Id: 13386759 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EDD15EE644B for ; 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Fri, 15 Sep 2023 09:51:26 +0000 (GMT) X-AuditID: cbfec7f2-a51ff7000002a5b7-f4-6504291e5557 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id B1.3B.10549.E1924056; Fri, 15 Sep 2023 10:51:26 +0100 (BST) Received: from CAMSVWEXC01.scsc.local (unknown [106.1.227.71]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20230915095126eusmtip299bf0302eaf2d7781e72b80611f92e41~FCa-x_3a21112711127eusmtip21; Fri, 15 Sep 2023 09:51:26 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 15 Sep 2023 10:51:25 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Fri, 15 Sep 2023 10:51:25 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 2/6] shmem: drop BLOCKS_PER_PAGE macro Thread-Topic: [PATCH 2/6] shmem: drop BLOCKS_PER_PAGE macro Thread-Index: AQHZ57owSgjKzHCSYUqzwv9vQRCtyw== Date: Fri, 15 Sep 2023 09:51:24 +0000 Message-ID: <20230915095042.1320180-3-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA01SfVCLcRzvtz179pSbe1rRj2a0K9S06s65B7WrcPfQddd5u0OHnZ6rWMvt afJ+ORzlpLxdrVLpZSuFJpNUunV6QURRhN7GqFxEE8toPXP67/Pyffl8f/fD2PxmzlwsVpFA KRUyuQh1QvSNP5/6Cr0Ryv/ag8VE9o0ylLj29hxKtBtnEu9HUxGi9rWYqKltQYj26myUeFf2 h0NUT1Rxia6094AoHhvhEvcqrqKEZTwbDeaRWUnPEDJPpyJvaX3I9lYVqStNRknd6Hku2Zxh QchvOmEEttUpMIqSx+6jlH7SnU4xZj2y9xNnv+VYOicJmJAU4IhBfCnUlkyAFOCE8XEtgHWf h1kM+Q6gxvwKYci3SZJhQv+15DZa7YYGwOTC7v9VDfphO3kMoF7fZyclAFb3lnJs/SjuDeta dFyb4YpncWBDwWlgM9j4UVj2QT2VywVfBvXPU1g27IqvhL0VL9gMlsB3D/sndQxDcC944g5l k3mTJT/SLkzJjnggHBlPtMkAnwf7S35xmelu8LUxl8Wc4AyvZtWwGTwbWqv77Kctga2dRsBg f3i7qM7+SiI4cTrfnlICuy5dRBkshsX5Q2wmgjNsyTRO3QtxqyPUm56xbXkgvhoammOZOS5w sKmSy2AB/HM3l5UGxOpp8dTTVqinrVBPW5EHkFLgRqnouGiKDlBQiRJaFkerFNGSXfFxOjD5 2R5Zm0arQM7gV4kBsDBgABBji1x5aBCL4vOiZAcOUsr4HUqVnKINwB1DRG48cVDLLj4eLUug 9lDUXkr5z2VhjnOTWH6CHp+siDeCSBfKsqFyvYPWvL08vujKj4Qkl6/ybto3RhTu/URrXm3x MvV4hhVIIxVyaU5ZQLRoFurhcXZNyMuh39LL9aH9Bq/kAjJg6UbfA7maRN9mzwvPTSiiOeI1 Z+zLTYct/ML4PfXrb3R4NqYWcMW7NXXCorYxrPejx/U3QYuGQv1Uiu5TrsMh6e73vhjn+1ee WRiydaBWePikoONhz6oRE2dtmCD96KLRF8sHex3U1szC47+s5s4a6chAeWx98ZmhVYdTEsL8 Q7fRL+dcDOa1GTZ3BgrT162IWD7WMMN90wJtt1E+0GG9H9FVrikUp/4WV433fTYEhwPdIb0I oWNkAT5sJS37C3e+/ZnbAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrEKsWRmVeSWpSXmKPExsVy+t/xe7pymiypBjs6uSzmrF/DZrH6bj+b xeUnfBZPP/WxWOy9pW2xZ+9JFovLu+awWdxb85/VYtefHewWNyY8ZbRY9vU9u8XujYvYLH7/ mMPmwOsxu+Eii8eCTaUem1doeVw+W+qxaVUnm8emT5PYPU7M+M3i8XmTXABHlJ5NUX5pSapC Rn5xia1StKGFkZ6hpYWekYmlnqGxeayVkamSvp1NSmpOZllqkb5dgl7Gt20sBS9ZK343TmRt YHzO0sXIySEhYCIx/9g/MFtIYCmjROcrX4i4jMTGL1dZIWxhiT/Xuti6GLmAaj4ySqw8sh/K OcMo8eHFLhYIZyWjxIY/n5hBWtgENCX2ndzEDpIQEZjNKnF4cQcjSIJZoE5izbNZYPuEBcwk tl3qYgKxRQSsJR5svMoMYetJ3Dv1CCjOwcEioCrRsj0VJMwLVPJ9wmSwsBCQPWu6F4jJKWAj 8f5HOUgFo4CsxKOVv9ghFolL3HoynwniAQGJJXvOM0PYohIvH/+DekxH4uz1J4wQtoHE1qX7 oIGiJPGnYyHUwXoSN6ZOYYOwtSWWLXzNDHGNoMTJmU9YJjBKz0KybhaSlllIWmYhaVnAyLKK USS1tDg3PbfYUK84Mbe4NC9dLzk/dxMjMDFtO/Zz8w7Gea8+6h1iZOJgPMQowcGsJMLLZsuU KsSbklhZlVqUH19UmpNafIjRFBhAE5mlRJPzgakxryTe0MzA1NDEzNLA1NLMWEmc17OgI1FI ID2xJDU7NbUgtQimj4mDU6qBqbB6f//C1Zwhr5xnrz01bdr361KegsJSb2a9fxgxwfbigj8B k5g/cLGX8vz/cWXK7O8lYdPO77n5KOTx5AIFvp816suWr1D3YtgfEq3tLHg9wXTK9CdbAqSq o/bF2Vkyvd++v22h3qve/pKSsjdmuybrrjvQ8+Oo2dZJ2kvXC888rbH6TERFjc38gP7Qp/6z zzv1Cfq8E9vmJr8qw2HJ0gnJSSkR3HdKbXoX+XzZZ3+h+/UE1bwOzR1K/XPN/15KeRpWvcXk Wlm7tf+TD7vfnVinP/U6j+Yk8/XzHTIVnu2WU1qrmr4v8Is3++FW5VNp3a6zRepbRO/Eaa24 dPW/wVybc3lSVY65Tptmrf776qESS3FGoqEWc1FxIgB/H/s+1QMAAA== X-CMS-MailID: 20230915095126eucas1p2cf75674dab8a81228f493a7200f4a1ba X-Msg-Generator: CA X-RootMTR: 20230915095126eucas1p2cf75674dab8a81228f493a7200f4a1ba X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095126eucas1p2cf75674dab8a81228f493a7200f4a1ba References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The commit [1] replaced all BLOCKS_PER_PAGE in favor of the generic PAGE_SECTORS but definition was not removed. Drop it as unused macro. [1] e09764cff44b5 ("shmem: quota support"). Signed-off-by: Daniel Gomez Reviewed-by: Luis Chamberlain --- mm/shmem.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 13c27c343820..8b3823e4d344 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -84,7 +84,6 @@ static struct vfsmount *shm_mnt; #include "internal.h" -#define BLOCKS_PER_PAGE (PAGE_SIZE/512) #define VM_ACCT(size) (PAGE_ALIGN(size) >> PAGE_SHIFT) /* Pretend that each entry is of this size in directory's i_size */ From patchwork Fri Sep 15 09:51:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Gomez X-Patchwork-Id: 13386760 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB92AEE644C for ; Fri, 15 Sep 2023 09:54:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234019AbjIOJyR (ORCPT ); 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Fri, 15 Sep 2023 09:51:28 +0000 (GMT) X-AuditID: cbfec7f5-815ff7000002937e-6d-6504292037c2 Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 04.3B.10549.F1924056; Fri, 15 Sep 2023 10:51:27 +0100 (BST) Received: from CAMSVWEXC01.scsc.local (unknown [106.1.227.71]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20230915095127eusmtip135d9c0b9a9fdcb2530a0ed2723b2c1c3~FCbBb1Xge2687926879eusmtip18; Fri, 15 Sep 2023 09:51:27 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 15 Sep 2023 10:51:27 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Fri, 15 Sep 2023 10:51:27 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 3/6] shmem: account for large order folios Thread-Topic: [PATCH 3/6] shmem: account for large order folios Thread-Index: AQHZ57oxkDDTtuHEck+OwDgOe5Q+ig== Date: Fri, 15 Sep 2023 09:51:26 +0000 Message-ID: <20230915095042.1320180-4-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrBKsWRmVeSWpSXmKPExsWy7djP87oKmiypBtO/y1jMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKC6blNSczLLU In27BK6MC+seMRe8Uqj4NHEDewPjdqkuRk4OCQETiZ/rtrN3MXJxCAmsYJQ4u/gdI4TzhVHi wp1mNpAqIYHPjBInj5rAdHz4tpMJomg5o0TP1GnMcEVHL4ZCJM4wSlzecJMVwlnJKLHj8Bcm kCo2AU2JfSc3gS0UEZjNKnF4cQcjSIJZoE5izbNZLCC2sICVRM+qOWBxEQF7iZ0X3rBB2HoS P8/PAarh4GARUJXYdzASJMwrYC2x9e9SsDCngI3E+x/lIGFGAVmJRyt/sUNMF5e49WQ+E8QH ghKLZu9hhrDFJP7tesgGYetInL3+hBHCNpDYunQfC4StJPGnYyHUlXoSN6ZOYYOwtSWWLXzN DHGCoMTJmU9YQN6SEGjiknh8ci47RLOLRP+6lVALhCVeHd8CFZeR+L9zPtMERu1ZSO6bhWTH LCQ7ZiHZsYCRZRWjeGppcW56arFxXmq5XnFibnFpXrpecn7uJkZgYjv97/jXHYwrXn3UO8TI xMF4iFGCg1lJhJfNlilViDclsbIqtSg/vqg0J7X4EKM0B4uSOK+27clkIYH0xJLU7NTUgtQi mCwTB6dUA1NjmfW+6GmVZ5mElf59tlg36eiplXFh3g2PP8yOLBCd18a6X8LjTISE5fu+JGuX 17+S/RJ2PRV+9+mq2KutVT79AdH7//KWe39xmZ4m62Hnyiy0w0y96XFg3ELLw97JItPsZsZ3 shW/Ptj5+Phf7vysA8ymbHN+xL250jNDppKRidews3/S3SP/n3zhqu62qFYzmJPmll7+ac8C IbXts+vnN2UtThZb/TeNX1Y+JsRZfxNXptpZl+W3/piuOu0YsvP2+6D5WdwMzVPXdUwrT7/J aPowd8e8DVvlJQLyT+6fuIu3qGvBvyKF5AWsjz3+XgzgmqFTfyfG9UT4JW6Z0C139jxcdFso 9e8r98WK9UosxRmJhlrMRcWJALONbYvbAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrCKsWRmVeSWpSXmKPExsVy+t/xu7rymiypBssvWFrMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKD2bovzSklSF jPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTublNSczLLUIn27BL2MC+seMRe8Uqj4NHED ewPjdqkuRk4OCQETiQ/fdjJ1MXJxCAksZZSYeu4PO0RCRmLjl6usELawxJ9rXWwQRR8ZJb6e PcYK4ZxhlLg3ZxGUs5JR4sqzD2AtbAKaEvtObmIHSYgIzGaVOLy4gxEkwSxQJ7Hm2SwWEFtY wEqiZ9UcsLiIgL3Ezgtv2CBsPYmf5+cA1XBwsAioSuw7GAkS5hWwltj6dylYWAjInjXdC8Tk FLCReP+jHKSCUUBW4tHKX+wQi8Qlbj2ZzwTxgIDEkj3nmSFsUYmXj/9BPaYjcfb6E0YI20Bi 69J9LBC2ksSfjoVQB+tJ3Jg6hQ3C1pZYtvA1M8Q1ghInZz5hmcAoPQvJullIWmYhaZmFpGUB I8sqRpHU0uLc9NxiQ73ixNzi0rx0veT83E2MwOS07djPzTsY5736qHeIkYmD8RCjBAezkggv my1TqhBvSmJlVWpRfnxRaU5q8SFGU2AATWSWEk3OB6bHvJJ4QzMDU0MTM0sDU0szYyVxXs+C jkQhgfTEktTs1NSC1CKYPiYOTqkGpsSJaUsr/xavZjmz9+/L4t9mRTwu06YzqaUuv1vRPnvH 5Jjpy8LEF4i3Va36Ynl1gdnrg+H9fxkNtTRXm76r+D5x48G5Ta1TdG6yvPQ0YKo3z5F1vfxD 7r/+ns60g113vJPi/jkI/k7fd1t2tux9hQNczlcdvYT9pGqWXfLuOKPlPOla+pVbkcbdIgqf lt3Q8Jg8y5crY9r1x0GfnA9Z9WV9N1/BXuZ+dN51K/8di6bKrfv3+MXT3f/X31k7+Y2Bb/4u BRnRAolN3x+u7Uhe5HIm/pv4Xr1vJs6CVWLvGD1FGxj/OUQEh3xZc//M4zOX9qzv3jK3x5O/ 6ON1ld1PT//6Vz6J/e91J6kTH1OrvS4rsRRnJBpqMRcVJwIADD2h59cDAAA= X-CMS-MailID: 20230915095128eucas1p2885c3add58d82413d9c1d17832d3d281 X-Msg-Generator: CA X-RootMTR: 20230915095128eucas1p2885c3add58d82413d9c1d17832d3d281 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095128eucas1p2885c3add58d82413d9c1d17832d3d281 References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Luis Chamberlain shmem uses the shem_info_inode alloced, swapped to account for allocated pages and swapped pages. In preparation for large order folios adjust the accounting to use folio_nr_pages(). This should produce no functional changes yet as larger order folios are not yet used or supported in shmem. Signed-off-by: Luis Chamberlain Signed-off-by: Daniel Gomez --- mm/shmem.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 8b3823e4d344..836d44584796 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -869,16 +869,16 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping, pgoff_t start, pgoff_t end) { XA_STATE(xas, &mapping->i_pages, start); - struct page *page; + struct folio *folio; unsigned long swapped = 0; unsigned long max = end - 1; rcu_read_lock(); - xas_for_each(&xas, page, max) { - if (xas_retry(&xas, page)) + xas_for_each(&xas, folio, max) { + if (xas_retry(&xas, folio)) continue; - if (xa_is_value(page)) - swapped++; + if (xa_is_value(folio)) + swapped += (folio_nr_pages(folio)); if (xas.xa_index == max) break; if (need_resched()) { @@ -1006,10 +1006,12 @@ static void shmem_undo_range(struct inode *inode, loff_t lstart, loff_t lend, folio = fbatch.folios[i]; if (xa_is_value(folio)) { + long swaps_freed; if (unfalloc) continue; - nr_swaps_freed += !shmem_free_swap(mapping, - indices[i], folio); + swaps_freed = folio_nr_pages(folio); + if (!shmem_free_swap(mapping, indices[i], folio)) + nr_swaps_freed += swaps_freed; continue; } @@ -1075,14 +1077,16 @@ static void shmem_undo_range(struct inode *inode, loff_t lstart, loff_t lend, folio = fbatch.folios[i]; if (xa_is_value(folio)) { + long swaps_freed; if (unfalloc) continue; + swaps_freed = folio_nr_pages(folio); if (shmem_free_swap(mapping, indices[i], folio)) { /* Swap was replaced by page: retry */ index = indices[i]; break; } - nr_swaps_freed++; + nr_swaps_freed += swaps_freed; continue; } @@ -1528,7 +1532,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc) if (add_to_swap_cache(folio, swap, __GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN, NULL) == 0) { - shmem_recalc_inode(inode, 0, 1); + shmem_recalc_inode(inode, 0, folio_nr_pages(folio)); swap_shmem_alloc(swap); shmem_delete_from_page_cache(folio, swp_to_radix_entry(swap)); @@ -1801,6 +1805,7 @@ static void shmem_set_folio_swapin_error(struct inode *inode, pgoff_t index, struct address_space *mapping = inode->i_mapping; swp_entry_t swapin_error; void *old; + long num_swap_pages; swapin_error = make_poisoned_swp_entry(); old = xa_cmpxchg_irq(&mapping->i_pages, index, @@ -1810,13 +1815,14 @@ static void shmem_set_folio_swapin_error(struct inode *inode, pgoff_t index, return; folio_wait_writeback(folio); + num_swap_pages = folio_nr_pages(folio); delete_from_swap_cache(folio); /* * Don't treat swapin error folio as alloced. Otherwise inode->i_blocks * won't be 0 when inode is released and thus trigger WARN_ON(i_blocks) * in shmem_evict_inode(). */ - shmem_recalc_inode(inode, -1, -1); + shmem_recalc_inode(inode, num_swap_pages, num_swap_pages); swap_free(swap); } @@ -1903,7 +1909,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, if (error) goto failed; - shmem_recalc_inode(inode, 0, -1); + shmem_recalc_inode(inode, 0, folio_nr_pages(folio)); if (sgp == SGP_WRITE) folio_mark_accessed(folio); @@ -2663,7 +2669,7 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd, if (ret) goto out_delete_from_cache; - shmem_recalc_inode(inode, 1, 0); + shmem_recalc_inode(inode, folio_nr_pages(folio), 0); folio_unlock(folio); return 0; out_delete_from_cache: From patchwork Fri Sep 15 09:51:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Gomez X-Patchwork-Id: 13386769 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A2D9EE644C for ; 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Fri, 15 Sep 2023 09:51:29 +0000 (GMT) X-AuditID: cbfec7f5-815ff7000002937e-7b-650429212abc Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 65.3B.10549.02924056; Fri, 15 Sep 2023 10:51:28 +0100 (BST) Received: from CAMSVWEXC02.scsc.local (unknown [106.1.227.72]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20230915095128eusmtip1ea983b58b5ef15df525d8a7f9a3c571b~FCbCaAFBw2687926879eusmtip19; Fri, 15 Sep 2023 09:51:28 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 15 Sep 2023 10:51:28 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Fri, 15 Sep 2023 10:51:28 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 4/6] shmem: add order parameter support to shmem_alloc_folio Thread-Topic: [PATCH 4/6] shmem: add order parameter support to shmem_alloc_folio Thread-Index: AQHZ57oyL8hoyYlY0kqz+yQTJH6NwQ== Date: Fri, 15 Sep 2023 09:51:28 +0000 Message-ID: <20230915095042.1320180-5-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrBKsWRmVeSWpSXmKPExsWy7djPc7qKmiypBi87ZS3mrF/DZrH6bj+b xeUnfBZPP/WxWOy9pW2xZ+9JFovLu+awWdxb85/VYtefHewWNyY8ZbRY9vU9u8XujYvYLH7/ mMPmwOsxu+Eii8eCTaUem1doeVw+W+qxaVUnm8emT5PYPU7M+M3i8XmTXABHFJdNSmpOZllq kb5dAlfGkdfvGQt6ZSqmnJ3G3MD4QKyLkZNDQsBEoudyA2sXIxeHkMAKRonGjxuhnC+MEntX 3IZyPjNKvGw/xNLFyAHWsvahF0i3kMByRonVG9XgalZvu8AO4ZxhlHh9/ysjhLOSUeLUhtnM IC1sApoS+05uAqsSEZjNKnF4cQcjSIJZoE5izbNZLCC2sICPxNQ5W8HiIgLBEqd/zmCHsPUk 3u3vBBvEIqAq8XzSCzYQm1fAWuLKzfOsIOdxCthIvP9RDhJmFJCVeLTyFzvEeHGJW0/mM0E8 LSixaPYeZghbTOLfrodsELaOxNnrTxghbAOJrUv3sUDYShJ/OhZCnakncWPqFDYIW1ti2cLX zBAnCEqcnPmEBeQvCYEmLomWJyegweUiseZbBcQcYYlXx7ewQ9gyEv93zmeawKg9C8l5s5Cs mIVkxSwkKxYwsqxiFE8tLc5NTy02zkst1ytOzC0uzUvXS87P3cQITGyn/x3/uoNxxauPeocY mTgYDzFKcDArifCy2TKlCvGmJFZWpRblxxeV5qQWH2KU5mBREufVtj2ZLCSQnliSmp2aWpBa BJNl4uCUamBqvxLYGpBlG/8n+jf31Y0v/oWkfVHb+1zWLix+zt9awaJza5IunrfRa2MxOrIu NCbshnVIcopW05Mwk/ULxN8c9eaXL5/PfTG+dy8bZ+xjpqfzHq3xOcoxz8NBNGjy+ROrlYKj N3N+mPxP29BHcLd0t9nXGSdy181rnOP+9MfJjyt0hZI83h4M07qtZqvHdeMsY/Cvrl8fPDfZ 7b6+9FIoz1lXnVtl/3arp/EZrudZ92y6nY6bifXy2bfSiuc46iy8oOvH/2znfL6EGpbJvz9G Z6fyd0W+vnnGmWchf53ZGrU7Gxi+fDuxu+0RS/DX+eHawR63jlic0/2aM+X0mutr+0NeTnky LcpV9RE3t1ylEktxRqKhFnNRcSIAXVcr29sDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrEKsWRmVeSWpSXmKPExsVy+t/xu7oKmiypBgd32FjMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKD2bovzSklSF jPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTublNSczLLUIn27BL2MI6/fMxb0ylRMOTuN uYHxgVgXIweHhICJxNqHXl2MnBxCAksZJc5c8wOxJQRkJDZ+ucoKYQtL/LnWxdbFyAVU85FR 4tHsqawQDWcYJd7tF4VIrGSUONg/kRkkwSagKbHv5CZ2kISIwGxWicOLOxhBEswCdRJrns1i AbGFBXwkps7ZChYXEQiWOHH2BRuErQc0tBNsEIuAqsTzSRBxXgFriSs3z7OCXC0EZM+a7gVi cgrYSLz/UQ5SwSggK/Fo5S92iE3iEreezGeCeEBAYsme88wQtqjEy8f/oB7TkTh7/QkjhG0g sXXpPhYIW0niT8dCqIv1JG5MncIGYWtLLFv4mhniGkGJkzOfsExglJ6FZN0sJC2zkLTMQtKy gJFlFaNIamlxbnpusaFecWJucWleul5yfu4mRmBi2nbs5+YdjPNefdQ7xMjEwXiIUYKDWUmE l82WKVWINyWxsiq1KD++qDQntfgQoykwhCYyS4km5wNTY15JvKGZgamhiZmlgamlmbGSOK9n QUeikEB6YklqdmpqQWoRTB8TB6dUA1PKbM6D9f0BZ1tvlSc+uKf93eREg1OWxM9HLfd2ff5X 692x+1zQs4gbIkV35iSpRl58e6ZuZqRhy7dNr4I8sw/ElVd9un059l1IQF390itNZq47tnxX Uv0jM2HLD+svel6GX+9VuzbbHWwWElVjsLXgeO16PUZsl+7ZiOILsb9ur0qxsDAWqFx1Ls/D 2/pxS+HH8mMOl31dOkpX+f57b1+7pmrvZ+2TIVNVrFwfKIo8+8Vaoxu1c4Pjp2ClHae1uz2n +1XdP+KZy1scpHv5UeCeoIvBM3/t2Dbnpq7R9oOTfAUeLHe/uYbVfPoXqxObOedtv7Vi5q63 q236YpeeYLm98UbPTJUwkZ/+b8xvnJ+vxFKckWioxVxUnAgAlvTUeNUDAAA= X-CMS-MailID: 20230915095129eucas1p1383d75c6d62056afbb20b78a3ec15234 X-Msg-Generator: CA X-RootMTR: 20230915095129eucas1p1383d75c6d62056afbb20b78a3ec15234 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095129eucas1p1383d75c6d62056afbb20b78a3ec15234 References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org In preparation for high order folio support for the write path, add order parameter when allocating a folio. This is on the write path when huge support is not enabled or when it is but the huge page allocation fails, the fallback will take advantage of this too. Use order 0 for the non write paths such as reads or swap in as these currently lack high order folios support. Signed-off-by: Daniel Gomez --- mm/shmem.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 836d44584796..ee297d8874d3 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1669,20 +1669,21 @@ static struct folio *shmem_alloc_hugefolio(gfp_t gfp, } static struct folio *shmem_alloc_folio(gfp_t gfp, - struct shmem_inode_info *info, pgoff_t index) + struct shmem_inode_info *info, pgoff_t index, + unsigned int order) { struct vm_area_struct pvma; struct folio *folio; shmem_pseudo_vma_init(&pvma, info, index); - folio = vma_alloc_folio(gfp, 0, &pvma, 0, false); + folio = vma_alloc_folio(gfp, order, &pvma, 0, false); shmem_pseudo_vma_destroy(&pvma); return folio; } static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode, - pgoff_t index, bool huge) + pgoff_t index, bool huge, unsigned int *order) { struct shmem_inode_info *info = SHMEM_I(inode); struct folio *folio; @@ -1691,7 +1692,7 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode, if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) huge = false; - nr = huge ? HPAGE_PMD_NR : 1; + nr = huge ? HPAGE_PMD_NR : 1U << *order; err = shmem_inode_acct_block(inode, nr); if (err) @@ -1700,7 +1701,7 @@ static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode, if (huge) folio = shmem_alloc_hugefolio(gfp, info, index); else - folio = shmem_alloc_folio(gfp, info, index); + folio = shmem_alloc_folio(gfp, info, index, *order); if (folio) { __folio_set_locked(folio); __folio_set_swapbacked(folio); @@ -1750,7 +1751,7 @@ static int shmem_replace_folio(struct folio **foliop, gfp_t gfp, */ gfp &= ~GFP_CONSTRAINT_MASK; VM_BUG_ON_FOLIO(folio_test_large(old), old); - new = shmem_alloc_folio(gfp, info, index); + new = shmem_alloc_folio(gfp, info, index, 0); if (!new) return -ENOMEM; @@ -1961,6 +1962,7 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, int error; int once = 0; int alloced = 0; + unsigned int order = 0; if (index > (MAX_LFS_FILESIZE >> PAGE_SHIFT)) return -EFBIG; @@ -2036,10 +2038,12 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, huge_gfp = vma_thp_gfp_mask(vma); huge_gfp = limit_gfp_mask(huge_gfp, gfp); - folio = shmem_alloc_and_acct_folio(huge_gfp, inode, index, true); + folio = shmem_alloc_and_acct_folio(huge_gfp, inode, index, true, + &order); if (IS_ERR(folio)) { alloc_nohuge: - folio = shmem_alloc_and_acct_folio(gfp, inode, index, false); + folio = shmem_alloc_and_acct_folio(gfp, inode, index, false, + &order); } if (IS_ERR(folio)) { int retry = 5; @@ -2602,7 +2606,7 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd, if (!*foliop) { ret = -ENOMEM; - folio = shmem_alloc_folio(gfp, info, pgoff); + folio = shmem_alloc_folio(gfp, info, pgoff, 0); if (!folio) goto out_unacct_blocks; From patchwork Fri Sep 15 09:51:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Gomez X-Patchwork-Id: 13386768 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D676EEE644B for ; 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Fri, 15 Sep 2023 09:51:31 +0000 (GMT) X-AuditID: cbfec7f2-a51ff7000002a5b7-1a-65042923bb09 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 09.3B.10549.22924056; Fri, 15 Sep 2023 10:51:31 +0100 (BST) Received: from CAMSVWEXC02.scsc.local (unknown [106.1.227.72]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20230915095130eusmtip22dc6e7222c8a07a587bf7bef6f55c865~FCbES6n5V0935009350eusmtip2L; Fri, 15 Sep 2023 09:51:30 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 15 Sep 2023 10:51:30 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Fri, 15 Sep 2023 10:51:30 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 5/6] shmem: add file length in shmem_get_folio path Thread-Topic: [PATCH 5/6] shmem: add file length in shmem_get_folio path Thread-Index: AQHZ57ozxEpCdFcMBk645e2R7dVRyg== Date: Fri, 15 Sep 2023 09:51:29 +0000 Message-ID: <20230915095042.1320180-6-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02SfVBMYRTG57179+7tjtW1Wr2EMduUsZul4Y+LUMNwfczEjDEYg2tdWX1g txX5KoNRI5K+7G6lsJS0WqXUrpJRtpSy+RhGwkY0JopY1abtLtN/v+c553nPOTMvzhNZ+ZNw ZVQ0q4piIiQYgd6pdTyZ6TsDZWdfbJ5G6Y2FGHXjzTmMstnHUh09Z1HK8kpGmS1WlLJV6DGq rXCIT1UMlAuol8kdgDL87BZQlcV5GNX/W48FC2ldXAtKXzJp6NvXpbStUUObChIw2tSTIqAf ZfajdK9p6hp8ExG0g41Q7mdVsxZtI3ZlJBXx9g7KDsTbT4A4cNw3EXjgkJwLu1vf8BIBgYvI 6wDe7/uMceIHgI76QT4negF8m6Xn/4v0vuhyR64BaG06I/jf1Vic484/HhYJ39wiH8BPueWI K4+RM+A9q2kk4kXq+PDB5dPAVeCRR2HhRy3q4vHkEphScnY4jQ830bAqc7nL9iLlsKzAKHDZ KOkHDT9GnhSSC2BNqmPE9iCDYPfvGJcNyCnwff4fAfe4N3xlz0G4C8bBPJ2Zx/EE6Kx4h3Ec ABtf2AHHs2Hp1XsoxxI4cDrXvaQcvkxLxTiWQUNuF49bYRy0XrSjrqsgeZyAdzN/ucNLYV73 MzePh1/qSgQcT4ZDd3OQZCDTjtpPO2qGdtQM7agZlwBaALxZjToyjFUHRrExcjUTqdZEhckV eyJNYPi3NTjrespB1pfv8hqA4KAGQJwn8RJiCxFWJNzBHIxlVXu2qjQRrLoG+OCoxFsoW2hV iMgwJpoNZ9m9rOpfFcE9JsUhK7dryC3ialyhxNsQRdPPYKd/h7aorME49CF0IHvIGP66euOy suaT0YPmMdrn55etXr8vcX5sYEXp4hXPsiMH0/vjfGKng6SHU32fWqib6g1X5lnSfedY/Xys CUR13fwLy8VMy1pxUTnSmXCmPS2pwH+sZ/FrhcwAvu9s77xhCVGKG4sJc58ouf55iH/rw8+O 0KuGBkXKxPO3bYc/FB3p2yCa29r2GL922C94XWjnqSOborX2eU31WQH+PTG7zZudtWXiVf0+ 5xaFfxRImSCdSLx5fyWTd0i+0fZVmn+rUh9S5Yl8StNVEY4BY8m7Y/VrbkrbM7zi47OdhLxW SXhKUPUuJlDKU6mZv7LdiIfcAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrMKsWRmVeSWpSXmKPExsVy+t/xe7rKmiypBlNPMFnMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKD2bovzSklSF jPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTublNSczLLUIn27BL2M6b3rmAv+alc0Pmlh bGBsUu5i5OSQEDCR+Hz9NXMXIxeHkMBSRol1e3YwQiRkJDZ+ucoKYQtL/LnWxQZR9JFRovV1 KwuEc4ZR4tDZZYwQzkpGiX/TPoC1swloSuw7uYkdJCEiMJtV4vDiDrAEs0CdxJpns1hAbGEB Z4lJW/qA5nIAFXlI7J/hDhIWEdCT2L5qPTtImEVAVWLZFyaQMK+AtcShKT/BwkJA9qzpXiAm p4CNxPsf5SAVjAKyEo9W/mKH2CMucevJfCaI+wUkluw5zwxhi0q8fPwP6i8dibPXn0D9ayCx dek+FghbSeJPx0Koe/UkbkydwgZha0ssW/iaGeIaQYmTM5+wTGCUnoVk3SwkLbOQtMxC0rKA kWUVo0hqaXFuem6xoV5xYm5xaV66XnJ+7iZGYGraduzn5h2M81591DvEyMTBeIhRgoNZSYSX zZYpVYg3JbGyKrUoP76oNCe1+BCjKTCAJjJLiSbnA5NjXkm8oZmBqaGJmaWBqaWZsZI4r2dB R6KQQHpiSWp2ampBahFMHxMHp1QD09psvsWhSvdN5prPPGOTsv76q4qHvxznfltUwXvXb7FG ve03ZmbPC5pPPAQPpe9umbpgbonXqegVcy7+51BJ5WSferX7nuSlPuaqfKZTzJ92VP7ddLyt uL779Azlw45v1pg+LitjuBTbz3Bx93TFld9ucff8f9h3oDM5MXjFScct3Kxlqicn6+1UujW7 XFo2+nG+o8cCN5/T7hHHk62qcpmyL0w4XPy5bGGKfezyV3EaG55IObOFO0ZIrvKbvjzw2MTX 8ydk/T5vtfjZYrXJWm8Tnl6JZD3GKXG5/FLRsrnzzk7Z+MRH0r3gV+i3mStjnO60TzyS21j4 v3mJxP+vnMmT02c8sTp+3flzua/+XRUlluKMREMt5qLiRABLoVzZ1gMAAA== X-CMS-MailID: 20230915095131eucas1p1010e364cd1c351e5b7379954bd237a3d X-Msg-Generator: CA X-RootMTR: 20230915095131eucas1p1010e364cd1c351e5b7379954bd237a3d X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095131eucas1p1010e364cd1c351e5b7379954bd237a3d References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org To be able to calculate folio order based on the file size when allocation occurs on the write path. Use of length 0 for non write paths. Signed-off-by: Daniel Gomez --- include/linux/shmem_fs.h | 2 +- mm/khugepaged.c | 2 +- mm/shmem.c | 28 ++++++++++++++++------------ 3 files changed, 18 insertions(+), 14 deletions(-) diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 6b0c626620f5..b3509e7f1054 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -133,7 +133,7 @@ enum sgp_type { }; int shmem_get_folio(struct inode *inode, pgoff_t index, struct folio **foliop, - enum sgp_type sgp); + enum sgp_type sgp, size_t len); struct folio *shmem_read_folio_gfp(struct address_space *mapping, pgoff_t index, gfp_t gfp); diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 88433cc25d8a..e5d3feff6de6 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1856,7 +1856,7 @@ static int collapse_file(struct mm_struct *mm, unsigned long addr, xas_unlock_irq(&xas); /* swap in or instantiate fallocated page */ if (shmem_get_folio(mapping->host, index, - &folio, SGP_NOALLOC)) { + &folio, SGP_NOALLOC, 0)) { result = SCAN_FAIL; goto xa_unlocked; } diff --git a/mm/shmem.c b/mm/shmem.c index ee297d8874d3..adff74751065 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -969,7 +969,7 @@ static struct folio *shmem_get_partial_folio(struct inode *inode, pgoff_t index) * (although in some cases this is just a waste of time). */ folio = NULL; - shmem_get_folio(inode, index, &folio, SGP_READ); + shmem_get_folio(inode, index, &folio, SGP_READ, 0); return folio; } @@ -1950,7 +1950,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index, static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, struct folio **foliop, enum sgp_type sgp, gfp_t gfp, struct vm_area_struct *vma, struct vm_fault *vmf, - vm_fault_t *fault_type) + vm_fault_t *fault_type, size_t len) { struct address_space *mapping = inode->i_mapping; struct shmem_inode_info *info = SHMEM_I(inode); @@ -2164,10 +2164,11 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, } int shmem_get_folio(struct inode *inode, pgoff_t index, struct folio **foliop, - enum sgp_type sgp) + enum sgp_type sgp, size_t len) { return shmem_get_folio_gfp(inode, index, foliop, sgp, - mapping_gfp_mask(inode->i_mapping), NULL, NULL, NULL); + mapping_gfp_mask(inode->i_mapping), + NULL, NULL, NULL, len); } /* @@ -2251,7 +2252,7 @@ static vm_fault_t shmem_fault(struct vm_fault *vmf) } err = shmem_get_folio_gfp(inode, vmf->pgoff, &folio, SGP_CACHE, - gfp, vma, vmf, &ret); + gfp, vma, vmf, &ret, i_size_read(inode)); if (err) return vmf_error(err); if (folio) @@ -2702,6 +2703,9 @@ shmem_write_begin(struct file *file, struct address_space *mapping, struct folio *folio; int ret = 0; + if (!mapping_large_folio_support(mapping)) + len = min_t(size_t, len, PAGE_SIZE - offset_in_page(pos)); + /* i_rwsem is held by caller */ if (unlikely(info->seals & (F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_FUTURE_WRITE))) { @@ -2711,7 +2715,7 @@ shmem_write_begin(struct file *file, struct address_space *mapping, return -EPERM; } - ret = shmem_get_folio(inode, index, &folio, SGP_WRITE); + ret = shmem_get_folio(inode, index, &folio, SGP_WRITE, len); if (ret) return ret; @@ -2783,7 +2787,7 @@ static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to) break; } - error = shmem_get_folio(inode, index, &folio, SGP_READ); + error = shmem_get_folio(inode, index, &folio, SGP_READ, 0); if (error) { if (error == -EINVAL) error = 0; @@ -2960,7 +2964,7 @@ static ssize_t shmem_file_splice_read(struct file *in, loff_t *ppos, break; error = shmem_get_folio(inode, *ppos / PAGE_SIZE, &folio, - SGP_READ); + SGP_READ, 0); if (error) { if (error == -EINVAL) error = 0; @@ -3147,7 +3151,7 @@ static long shmem_fallocate(struct file *file, int mode, loff_t offset, error = -ENOMEM; else error = shmem_get_folio(inode, index, &folio, - SGP_FALLOC); + SGP_FALLOC, 0); if (error) { info->fallocend = undo_fallocend; /* Remove the !uptodate folios we added */ @@ -3502,7 +3506,7 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir, inode->i_op = &shmem_short_symlink_operations; } else { inode_nohighmem(inode); - error = shmem_get_folio(inode, 0, &folio, SGP_WRITE); + error = shmem_get_folio(inode, 0, &folio, SGP_WRITE, 0); if (error) goto out_remove_offset; inode->i_mapping->a_ops = &shmem_aops; @@ -3550,7 +3554,7 @@ static const char *shmem_get_link(struct dentry *dentry, return ERR_PTR(-ECHILD); } } else { - error = shmem_get_folio(inode, 0, &folio, SGP_READ); + error = shmem_get_folio(inode, 0, &folio, SGP_READ, 0); if (error) return ERR_PTR(error); if (!folio) @@ -4923,7 +4927,7 @@ struct folio *shmem_read_folio_gfp(struct address_space *mapping, BUG_ON(!shmem_mapping(mapping)); error = shmem_get_folio_gfp(inode, index, &folio, SGP_CACHE, - gfp, NULL, NULL, NULL); + gfp, NULL, NULL, NULL, i_size_read(inode)); if (error) return ERR_PTR(error); From patchwork Fri Sep 15 09:51:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Gomez X-Patchwork-Id: 13386770 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 40229EE644C for ; 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Fri, 15 Sep 2023 09:51:33 +0000 (GMT) X-AuditID: cbfec7f2-a3bff7000002a5b7-26-65042925ea5e Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 5B.3B.10549.52924056; Fri, 15 Sep 2023 10:51:33 +0100 (BST) Received: from CAMSVWEXC01.scsc.local (unknown [106.1.227.71]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20230915095133eusmtip145b39d48e2d4c2b2f0f476f141a1971f~FCbGQl2U92594625946eusmtip1i; Fri, 15 Sep 2023 09:51:33 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 15 Sep 2023 10:51:32 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Fri, 15 Sep 2023 10:51:32 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [PATCH 6/6] shmem: add large folios support to the write path Thread-Topic: [PATCH 6/6] shmem: add large folios support to the write path Thread-Index: AQHZ57o0gOj42/h7V0WVSDdaHJaWqA== Date: Fri, 15 Sep 2023 09:51:31 +0000 Message-ID: <20230915095042.1320180-7-da.gomez@samsung.com> In-Reply-To: <20230915095042.1320180-1-da.gomez@samsung.com> Accept-Language: en-US, en-GB Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [106.110.32.103] MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrKKsWRmVeSWpSXmKPExsWy7djP87qqmiypBpfmq1vMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKC6blNSczLLU In27BK6M/d1mBbuEKv5se8bWwHiar4uRg0NCwETia5tOFyMXh5DACkaJncsWMkM4Xxgl9t9b xgLhfGaUeNZ6mxWmY94rFYj4ckaJoy1b2eCKfmyeDeWcYZRY8vYn1KyVjBLbZr0EmsXJwSag KbHv5CZ2kISIwGxWicOLOxhBEswCdRJrns0CKmLnEBZwk1ijDxIVEfCWeLFzCRuErSfx/tAb sGoWAVWJz7t+soNcxCtgLbH+VjaIySlgI/H+RzlIBaOArMSjlb/YIWaLS9x6Mp8JxJYQEJRY NHsPM4QtJvFv10M2CFtH4uz1J4wQtoHE1qX7WCBsJYk/HQuhbtSTuDF1ChuErS2xbOFrsDm8 QDNPznwCDiwJgSYuicZ7nawQzS4SvXtPQA0Vlnh1fAs7hC0j8X/nfKYJjNqzkNw3C8mOWUh2 zEKyYwEjyypG8dTS4tz01GLDvNRyveLE3OLSvHS95PzcTYzAlHb63/FPOxjnvvqod4iRiYPx EKMEB7OSCC+bLVOqEG9KYmVValF+fFFpTmrxIUZpDhYlcV5t25PJQgLpiSWp2ampBalFMFkm Dk6pBqaWRM5Pj4tPdNV4Tzrws1rjd/3C9dXPnLiL7z9YHLMk/25guu/P9V+Lpdj4Z2jzRDL9 l1n0MeamnZfEdI3PdaVHPr6/flR/4rROu4AjFyYG3lsqODM4gm3BhvUcbW9kdZkqJP++jO10 +TF3ofZvNbvbTXvvJSoXmcvaT9tXu1LT1zBiW03Dzis/1tsU297Ilzn5vvTou6anmTPCN1rK P1Nlets6Y5X0mUNc6/9nzXUwkfJ11t66P5G16WNq9pEzTc95wi/PNT3UxG786OrEkF3qgR8f b/Xfc2ZyZ7XDBLuIVTWL1wp/NF1wlt1HU1nSzTK1sWNiTcP7ne8S7FfxKm+enyh5R97rdfMO xZ+fHLmUWIozEg21mIuKEwGrauQe2AMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPKsWRmVeSWpSXmKPExsVy+t/xu7qqmiypBlf+cVjMWb+GzWL13X42 i8tP+Cyefupjsdh7S9tiz96TLBaXd81hs7i35j+rxa4/O9gtbkx4ymix7Ot7dovdGxexWfz+ MYfNgddjdsNFFo8Fm0o9Nq/Q8rh8ttRj06pONo9Nnyaxe5yY8ZvF4/MmuQCOKD2bovzSklSF jPziElulaEMLIz1DSws9IxNLPUNj81grI1MlfTublNSczLLUIn27BL2M/d1mBbuEKv5se8bW wHiar4uRg0NCwERi3iuVLkYuDiGBpYwSRx/fZOti5ASKy0hs/HKVFcIWlvhzrYsNougjo8S3 ta9ZQBJCAmcYJfo+VkMkVjJKHGvcBZZgE9CU2HdyEztIQkRgNqvE4cUdjCAJZoE6iTXPZgEV sXMIC7hJrNEHiYoIeEu82LmEDcLWk3h/6A1YNYuAqsTnXT/ZQQ7lFbCWWH8rG8QUAjJnTfcC MTkFbCTe/ygHKWYUkJV4tPIXO8QacYlbT+YzQVwvILFkz3lmCFtU4uXjf1Bf6Uicvf6EEcI2 kNi6dB8LhK0k8adjIdS5ehI3pk5hg7C1JZYtfA02h1dAUOLkzCcsExilZyFZNwtJyywkLbOQ tCxgZFnFKJJaWpybnltsqFecmFtcmpeul5yfu4kRmJK2Hfu5eQfjvFcf9Q4xMnEwHmKU4GBW EuFls2VKFeJNSaysSi3Kjy8qzUktPsRoCgygicxSosn5wKSYVxJvaGZgamhiZmlgamlmrCTO 61nQkSgkkJ5YkpqdmlqQWgTTx8TBKdXAFGb97Euc/wHZOwe2H2d42C6wT9inRO7LFrv2jz5P F+jw6Pd+rmiR+vWiN6yJcdZj/UWebt99mZZpm3FUc8u9iHs94eG6jMblr2Q0rq9tOuBysvnq HqNDv/XmeUz9sMmm9fl6u4v7WCZt+nauo1l/yR1BpU1qlornQqTCTdjnZiWU1r2rlODnvbzW y/y5mNgqoQcvG6a8O3E48N3Ed//ZoxIdvsRvEP6t4OX9WH7C2uygo9XeTnlK3J69P5QXenPc YjKPy5Hg+z9xZ/CXbD2xu1ucfZzSnzWK+9ucKK07vLfk5Url5KaYKNUCptfdS40XvdXc07yx feHuG8fPJVYcFP399u7Tmcvfdkzx73g/VYmlOCPRUIu5qDgRACdVhs7SAwAA X-CMS-MailID: 20230915095133eucas1p267bade2888b7fcd2e1ea8e13e21c495f X-Msg-Generator: CA X-RootMTR: 20230915095133eucas1p267bade2888b7fcd2e1ea8e13e21c495f X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20230915095133eucas1p267bade2888b7fcd2e1ea8e13e21c495f References: <20230915095042.1320180-1-da.gomez@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Add large folio support for shmem write path matching the same high order preference mechanism used for iomap buffered IO path as used in __filemap_get_folio(). Use the __folio_get_max_order to get a hint for the order of the folio based on file size which takes care of the mapping requirements. Swap does not support high order folios for now, so make it order 0 in case swap is enabled. Signed-off-by: Daniel Gomez --- mm/shmem.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index adff74751065..26ca555b1669 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1683,13 +1683,19 @@ static struct folio *shmem_alloc_folio(gfp_t gfp, } static struct folio *shmem_alloc_and_acct_folio(gfp_t gfp, struct inode *inode, - pgoff_t index, bool huge, unsigned int *order) + pgoff_t index, bool huge, unsigned int *order, + struct shmem_sb_info *sbinfo) { struct shmem_inode_info *info = SHMEM_I(inode); struct folio *folio; int nr; int err; + if (!sbinfo->noswap) + *order = 0; + else + *order = (*order == 1) ? 0 : *order; + if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) huge = false; nr = huge ? HPAGE_PMD_NR : 1U << *order; @@ -2032,6 +2038,8 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, return 0; } + order = mapping_size_order(inode->i_mapping, index, len); + if (!shmem_is_huge(inode, index, false, vma ? vma->vm_mm : NULL, vma ? vma->vm_flags : 0)) goto alloc_nohuge; @@ -2039,11 +2047,11 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, huge_gfp = vma_thp_gfp_mask(vma); huge_gfp = limit_gfp_mask(huge_gfp, gfp); folio = shmem_alloc_and_acct_folio(huge_gfp, inode, index, true, - &order); + &order, sbinfo); if (IS_ERR(folio)) { alloc_nohuge: folio = shmem_alloc_and_acct_folio(gfp, inode, index, false, - &order); + &order, sbinfo); } if (IS_ERR(folio)) { int retry = 5; @@ -2147,6 +2155,8 @@ static int shmem_get_folio_gfp(struct inode *inode, pgoff_t index, if (folio_test_large(folio)) { folio_unlock(folio); folio_put(folio); + if (order > 0) + order--; goto alloc_nohuge; } unlock: