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GET /api/1.2/patches/2222372/?format=api
{ "id": 2222372, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222372/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260411085643.3221565-4-dhowells@redhat.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<20260411085643.3221565-4-dhowells@redhat.com>", "list_archive_url": null, "date": "2026-04-11T08:56:41", "name": "[3/4] cachefiles: fix incorrect dentry refcount in cachefiles_cull()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a9feb1cfa33f8b1ce9365beb33fbdf36e8b0bb03", "submitter": { "id": 59, "url": "http://patchwork.ozlabs.org/api/1.2/people/59/?format=api", "name": "David Howells", "email": "dhowells@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260411085643.3221565-4-dhowells@redhat.com/mbox/", "series": [ { "id": 499541, "url": "http://patchwork.ozlabs.org/api/1.2/series/499541/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=499541", "date": "2026-04-11T08:56:38", "name": "netfs: Miscellaneous fixes", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499541/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222372/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222372/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-10762-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=ZsfbugLy;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n\ts=mimecast20190719; t=1775897835;\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=wyv45w2ugH74c2VSCb7J4MMwtcNcSvmG464mF8qh4Dc=;\n\tb=ZsfbugLy1cSn10dwtp48S1Z9ZoLLJcfY9gEQSWqEql+fPURf6cwU8B+mQMi2blt1lmLVXW\n\tYoH/a/p0b4PP0J9Ko5UdIFCyNZFRN7TZRrlsBB0eDTV1pBMaXJum/G680OtBO5fiSfDqe6\n\t2lbhMzWdIDIU6gkO618nTAE2yaHkc5A=", "X-MC-Unique": "lpn6ZtJpNsCHJ9bBcnhvXg-1", "X-Mimecast-MFC-AGG-ID": "lpn6ZtJpNsCHJ9bBcnhvXg_1775897829", "From": "David Howells <dhowells@redhat.com>", "To": "Christian Brauner <christian@brauner.io>", "Cc": "David Howells <dhowells@redhat.com>,\n\tPaulo Alcantara <pc@manguebit.com>,\n\tnetfs@lists.linux.dev,\n\tlinux-afs@lists.infradead.org,\n\tlinux-cifs@vger.kernel.org,\n\tceph-devel@vger.kernel.org,\n\tlinux-fsdevel@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tNeilBrown <neilb@ownmail.net>,\n\tMarc Dionne <marc.dionne@auristor.com>,\n\tNeilBrown <neil@brown.name>,\n\t\"Paulo Alcantara (Red Hat)\" <pc@manguebit.org>", "Subject": "[PATCH 3/4] cachefiles: fix incorrect dentry refcount in\n cachefiles_cull()", "Date": "Sat, 11 Apr 2026 09:56:41 +0100", "Message-ID": "<20260411085643.3221565-4-dhowells@redhat.com>", "In-Reply-To": "<20260411085643.3221565-1-dhowells@redhat.com>", "References": "<20260411085643.3221565-1-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": "From: NeilBrown <neilb@ownmail.net>\n\nThe patch mentioned below changed cachefiles_bury_object() to expect 2\nreferences to the 'rep' dentry. Three of the callers were changed to\nuse start_removing_dentry() which takes an extra reference so in those\ncases the call gets the expected references.\n\nHowever there is another call to cachefiles_bury_object() in\ncachefiles_cull() which did not need to be changed to use\nstart_removing_dentry() and so was not properly considered.\nIt still passed the dentry with just one reference so the net result is\nthat a reference is lost.\n\nTo meet the expectations of cachefiles_bury_object(), cachefiles_cull()\nmust take an extra reference before the call. It will be dropped by\ncachefiles_bury_object().\n\nReported-by: Marc Dionne <marc.dionne@auristor.com>\nFixes: 7bb1eb45e43c (\"VFS: introduce start_removing_dentry()\")\nSigned-off-by: NeilBrown <neil@brown.name>\nSigned-off-by: David Howells <dhowells@redhat.com>\nAcked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>\ncc: netfs@lists.linux.dev\ncc: linux-afs@lists.infradead.org\ncc: linux-fsdevel@vger.kernel.org\n---\n fs/cachefiles/namei.c | 5 +++++\n 1 file changed, 5 insertions(+)", "diff": "diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c\nindex e5ec90dccc27..eb9eb7683e3c 100644\n--- a/fs/cachefiles/namei.c\n+++ b/fs/cachefiles/namei.c\n@@ -810,6 +810,11 @@ int cachefiles_cull(struct cachefiles_cache *cache, struct dentry *dir,\n \tif (ret < 0)\n \t\tgoto error_unlock;\n \n+\t/*\n+\t * cachefiles_bury_object() expects 2 references to 'victim',\n+\t * and drops one.\n+\t */\n+\tdget(victim);\n \tret = cachefiles_bury_object(cache, NULL, dir, victim,\n \t\t\t\t FSCACHE_OBJECT_WAS_CULLED);\n \tdput(victim);\n", "prefixes": [ "3/4" ] }