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GET /api/1.1/patches/2223180/?format=api
{ "id": 2223180, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2223180/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260414161805.233686-2-bharathsm@microsoft.com/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.1/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": "" }, "msgid": "<20260414161805.233686-2-bharathsm@microsoft.com>", "date": "2026-04-14T16:18:03", "name": "[2/4] smb: client: add tracepoint for local lock conflicts", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "5fcb15f735c8b8530ebbb90b16cdb3f7eb409e0c", "submitter": { "id": 86063, "url": "http://patchwork.ozlabs.org/api/1.1/people/86063/?format=api", "name": "Bharath SM", "email": "bharathsm.hsk@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260414161805.233686-2-bharathsm@microsoft.com/mbox/", "series": [ { "id": 499868, "url": "http://patchwork.ozlabs.org/api/1.1/series/499868/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=499868", "date": "2026-04-14T16:18:03", "name": "[1/4] smb: client: add tracepoints for lock operations", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499868/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223180/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223180/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-cifs+bounces-10813-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 (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=UB5+LK21;\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; helo=tor.lore.kernel.org;\n envelope-from=linux-cifs+bounces-10813-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)", "smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"UB5+LK21\"", "smtp.subspace.kernel.org;\n arc=none smtp.client-ip=209.85.210.178", "smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com", "smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com" ], "Received": [ "from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fw8dx0dLLz1y2d\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 15 Apr 2026 02:20:53 +1000 (AEST)", "from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby tor.lore.kernel.org (Postfix) with ESMTP id 8903D3013A4C\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 14 Apr 2026 16:18:14 +0000 (UTC)", "from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id EB37E1DFFD;\n\tTue, 14 Apr 2026 16:18:13 +0000 (UTC)", "from mail-pf1-f178.google.com (mail-pf1-f178.google.com\n [209.85.210.178])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id B6F96314B73\n\tfor <linux-cifs@vger.kernel.org>; Tue, 14 Apr 2026 16:18:12 +0000 (UTC)", "by mail-pf1-f178.google.com with SMTP id\n d2e1a72fcca58-82cebbdab08so4259805b3a.2\n for <linux-cifs@vger.kernel.org>;\n Tue, 14 Apr 2026 09:18:12 -0700 (PDT)", "from bharathsm-Virtual-Machine.. 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This helps\ndebug lock contention issues when locks are cached locally due\nto oplocks/leases.\n\nThe trace includes both the requested and conflicting lock details:\n- Requested: offset, length, type\n- Conflicting: offset, length, type, pid (lock holder)\n\nSigned-off-by: Bharath SM <bharathsm@microsoft.com>\n---\n fs/smb/client/file.c | 3 +++\n fs/smb/client/trace.h | 35 +++++++++++++++++++++++++++++++++++\n 2 files changed, 38 insertions(+)", "diff": "diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c\nindex 66a678a0e89f..4662592801b0 100644\n--- a/fs/smb/client/file.c\n+++ b/fs/smb/client/file.c\n@@ -1631,6 +1631,9 @@ cifs_find_fid_lock_conflict(struct cifs_fid_locks *fdlocks, __u64 offset,\n \t\t\tcontinue;\n \t\tif (conf_lock)\n \t\t\t*conf_lock = li;\n+\t\ttrace_smb3_lock_conflict(cfile->fid.persistent_fid,\n+\t\t\t\t\t offset, length, type,\n+\t\t\t\t\t li->offset, li->length, li->type, li->pid);\n \t\treturn true;\n \t}\n \treturn false;\ndiff --git a/fs/smb/client/trace.h b/fs/smb/client/trace.h\nindex 242c9da0283e..cb5ce1316eba 100644\n--- a/fs/smb/client/trace.h\n+++ b/fs/smb/client/trace.h\n@@ -729,6 +729,41 @@ DEFINE_SMB3_LOCK_EVENT(lock_done);\n DEFINE_SMB3_LOCK_EVENT(lock_err);\n DEFINE_SMB3_LOCK_EVENT(lock_cached);\n \n+TRACE_EVENT(smb3_lock_conflict,\n+\tTP_PROTO(__u64 fid,\n+\t\t__u64 req_offset,\n+\t\t__u64 req_len,\n+\t\t__u8 req_type,\n+\t\t__u64 conf_offset,\n+\t\t__u64 conf_len,\n+\t\t__u16 conf_type,\n+\t\t__u32 conf_pid),\n+\tTP_ARGS(fid, req_offset, req_len, req_type, conf_offset, conf_len, conf_type, conf_pid),\n+\tTP_STRUCT__entry(\n+\t\t__field(__u64, fid)\n+\t\t__field(__u64, req_offset)\n+\t\t__field(__u64, req_len)\n+\t\t__field(__u8, req_type)\n+\t\t__field(__u64, conf_offset)\n+\t\t__field(__u64, conf_len)\n+\t\t__field(__u16, conf_type)\n+\t\t__field(__u32, conf_pid)\n+\t),\n+\tTP_fast_assign(\n+\t\t__entry->fid = fid;\n+\t\t__entry->req_offset = req_offset;\n+\t\t__entry->req_len = req_len;\n+\t\t__entry->req_type = req_type;\n+\t\t__entry->conf_offset = conf_offset;\n+\t\t__entry->conf_len = conf_len;\n+\t\t__entry->conf_type = conf_type;\n+\t\t__entry->conf_pid = conf_pid;\n+\t),\n+\tTP_printk(\"fid=0x%llx req=[0x%llx:0x%llx] type=0x%x conflicts with [0x%llx:0x%llx] type=0x%x pid=%u\",\n+\t\t__entry->fid, __entry->req_offset, __entry->req_len, __entry->req_type,\n+\t\t__entry->conf_offset, __entry->conf_len, __entry->conf_type, __entry->conf_pid)\n+);\n+\n /*\n * For handle based query/set info calls\n */\n", "prefixes": [ "2/4" ] }