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GET /api/patches/2216350/?format=api
{ "id": 2216350, "url": "http://patchwork.ozlabs.org/api/patches/2216350/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260326104544.509518-10-dhowells@redhat.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260326104544.509518-10-dhowells@redhat.com>", "list_archive_url": null, "date": "2026-03-26T10:45:24", "name": "[09/26] mm: Make readahead store folio count in readahead_control", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4ae204d6abde9f59b367e5d0c798aead2e44133d", "submitter": { "id": 59, "url": "http://patchwork.ozlabs.org/api/people/59/?format=api", "name": "David Howells", "email": "dhowells@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260326104544.509518-10-dhowells@redhat.com/mbox/", "series": [ { "id": 497565, "url": "http://patchwork.ozlabs.org/api/series/497565/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=497565", "date": "2026-03-26T10:45:15", "name": "netfs: Keep track of folios in a segmented bio_vec[] chain", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497565/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216350/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216350/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-10532-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=B6HqrYDd;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1774522054;\n\th=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n\t to:to:cc:cc:mime-version:mime-version:\n\t content-transfer-encoding:content-transfer-encoding:\n\t in-reply-to:in-reply-to:references:references;\n\tbh=vmw7T0PnOLgxIpELQ9rQpU7AHBZsSNPxjlfKpKQj97s=;\n\tb=B6HqrYDdyQGbjMotNwXqAuy1g4RxsTE0PN8Pv717nLIWYROjOr/DoN1nwJfssgqNGNTA4k\n\t+mlcpOmz4XQ44jlmuooFuac2t45t4F57DKuU/Cnh5mXz1NQYBxtLh/v7xKRdUYOBuv4CYG\n\twcPZ1Qfx9G31Ufi8139GrCT985HfoXE=", "X-MC-Unique": "jGSoJECHMrekBUYeanVpuA-1", "X-Mimecast-MFC-AGG-ID": "jGSoJECHMrekBUYeanVpuA_1774522046", "From": "David Howells <dhowells@redhat.com>", "To": "Christian Brauner <christian@brauner.io>,\n\tMatthew Wilcox <willy@infradead.org>,\n\tChristoph Hellwig <hch@infradead.org>", "Cc": "David Howells <dhowells@redhat.com>,\n\tPaulo Alcantara <pc@manguebit.com>,\n\tJens Axboe <axboe@kernel.dk>,\n\tLeon Romanovsky <leon@kernel.org>,\n\tSteve French <sfrench@samba.org>,\n\tChenXiaoSong <chenxiaosong@chenxiaosong.com>,\n\tMarc Dionne <marc.dionne@auristor.com>,\n\tEric Van Hensbergen <ericvh@kernel.org>,\n\tDominique Martinet <asmadeus@codewreck.org>,\n\tIlya Dryomov <idryomov@gmail.com>,\n\tTrond Myklebust <trondmy@kernel.org>,\n\tnetfs@lists.linux.dev,\n\tlinux-afs@lists.infradead.org,\n\tlinux-cifs@vger.kernel.org,\n\tlinux-nfs@vger.kernel.org,\n\tceph-devel@vger.kernel.org,\n\tv9fs@lists.linux.dev,\n\tlinux-erofs@lists.ozlabs.org,\n\tlinux-fsdevel@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tPaulo Alcantara <pc@manguebit.org>,\n\tlinux-mm@kvack.org", "Subject": "[PATCH 09/26] mm: Make readahead store folio count in\n readahead_control", "Date": "Thu, 26 Mar 2026 10:45:24 +0000", "Message-ID": "<20260326104544.509518-10-dhowells@redhat.com>", "In-Reply-To": "<20260326104544.509518-1-dhowells@redhat.com>", "References": "<20260326104544.509518-1-dhowells@redhat.com>", "Precedence": "bulk", "X-Mailing-List": "linux-cifs@vger.kernel.org", "List-Id": "<linux-cifs.vger.kernel.org>", "List-Subscribe": "<mailto:linux-cifs+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-cifs+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.12" }, "content": "Make readahead store folio count in readahead_control so that the\nfilesystem can know in advance how many folios it needs to keep track of.\n\nSigned-off-by: David Howells <dhowells@redhat.com>\ncc: Paulo Alcantara <pc@manguebit.org>\ncc: Matthew Wilcox <willy@infradead.org>\ncc: netfs@lists.linux.dev\ncc: linux-mm@kvack.org\ncc: linux-fsdevel@vger.kernel.org\n---\n include/linux/pagemap.h | 1 +\n mm/readahead.c | 4 ++++\n 2 files changed, 5 insertions(+)", "diff": "diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h\nindex ec442af3f886..3c3e34e5fe8a 100644\n--- a/include/linux/pagemap.h\n+++ b/include/linux/pagemap.h\n@@ -1361,6 +1361,7 @@ struct readahead_control {\n \tstruct file_ra_state *ra;\n /* private: use the readahead_* accessors instead */\n \tpgoff_t _index;\n+\tunsigned int _nr_folios;\n \tunsigned int _nr_pages;\n \tunsigned int _batch_count;\n \tbool dropbehind;\ndiff --git a/mm/readahead.c b/mm/readahead.c\nindex 7b05082c89ea..53134c9d9fe9 100644\n--- a/mm/readahead.c\n+++ b/mm/readahead.c\n@@ -292,6 +292,7 @@ void page_cache_ra_unbounded(struct readahead_control *ractl,\n \t\tif (i == mark)\n \t\t\tfolio_set_readahead(folio);\n \t\tractl->_workingset |= folio_test_workingset(folio);\n+\t\tractl->_nr_folios++;\n \t\tractl->_nr_pages += min_nrpages;\n \t\ti += min_nrpages;\n \t}\n@@ -459,6 +460,7 @@ static inline int ra_alloc_folio(struct readahead_control *ractl, pgoff_t index,\n \t\treturn err;\n \t}\n \n+\tractl->_nr_folios++;\n \tractl->_nr_pages += 1UL << order;\n \tractl->_workingset |= folio_test_workingset(folio);\n \treturn 0;\n@@ -802,6 +804,7 @@ void readahead_expand(struct readahead_control *ractl,\n \t\t\tractl->_workingset = true;\n \t\t\tpsi_memstall_enter(&ractl->_pflags);\n \t\t}\n+\t\tractl->_nr_folios++;\n \t\tractl->_nr_pages += min_nrpages;\n \t\tractl->_index = folio->index;\n \t}\n@@ -831,6 +834,7 @@ void readahead_expand(struct readahead_control *ractl,\n \t\t\tractl->_workingset = true;\n \t\t\tpsi_memstall_enter(&ractl->_pflags);\n \t\t}\n+\t\tractl->_nr_folios++;\n \t\tractl->_nr_pages += min_nrpages;\n \t\tif (ra) {\n \t\t\tra->size += min_nrpages;\n", "prefixes": [ "09/26" ] }