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{ "id": 2218421, "url": "http://patchwork.ozlabs.org/api/covers/2218421/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/cover/20260401072912.355072-1-huiwen.he@linux.dev/", "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": "<20260401072912.355072-1-huiwen.he@linux.dev>", "list_archive_url": null, "date": "2026-04-01T07:29:00", "name": "[v2,00/12] smb: improve search speed of SMB1 maperror", "submitter": { "id": 93029, "url": "http://patchwork.ozlabs.org/api/people/93029/?format=api", "name": null, "email": "huiwen.he@linux.dev" }, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/cover/20260401072912.355072-1-huiwen.he@linux.dev/mbox/", "series": [ { "id": 498285, "url": "http://patchwork.ozlabs.org/api/series/498285/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=498285", "date": "2026-04-01T07:29:08", "name": "smb: improve search speed of SMB1 maperror", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/498285/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2218421/comments/", "headers": { "Return-Path": "\n <linux-cifs+bounces-10605-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=linux.dev header.i=@linux.dev header.a=rsa-sha256\n header.s=key1 header.b=i2uubjUf;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=104.64.211.4; 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smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=linux.dev;\n spf=pass smtp.mailfrom=linux.dev;\n dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev\n header.b=i2uubjUf; arc=none smtp.client-ip=91.218.175.184", "X-Report-Abuse": "Please report any abuse attempt to abuse@migadu.com and\n include these headers.", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1;\n\tt=1775028619;\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\tbh=0XDWZKI8mpFIWM0A+B1DJkCi6jG/GRRVkm68TJP90UE=;\n\tb=i2uubjUfEqqiFNdceollrTrZ9HHk4nEIZZ+AsbATo28FbKySLzbbSMGVT5Kl7kraVSh+hx\n\tPzFPmCbs+5m4PjwQxlVPzjKmPG8ltyu/kP1lM9GY0dKxZFV7P/EDvmvFXZ6xwLjBNMqIqo\n\txHMY7N7J2X/2oDANO9ME/YOCNHbDwb8=", "From": "huiwen.he@linux.dev", "To": "smfrench@gmail.com,\n\tlinkinjeon@kernel.org,\n\tpc@manguebit.org,\n\tronniesahlberg@gmail.com,\n\tsprasad@microsoft.com,\n\ttom@talpey.com,\n\tbharathsm@microsoft.com,\n\tsenozhatsky@chromium.org,\n\tdhowells@redhat.com,\n\tchenxiaosong@kylinos.cn,\n\tchenxiaosong@chenxiaosong.com,\n\ttangyouling@kylinos.cn", "Cc": "linux-cifs@vger.kernel.org,\n\tHuiwen He <hehuiwen@kylinos.cn>", "Subject": "[PATCH v2 00/12] smb: improve search speed of SMB1 maperror", "Date": "Wed, 1 Apr 2026 07:29:00 +0000", "Message-ID": "<20260401072912.355072-1-huiwen.he@linux.dev>", "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-Migadu-Flow": "FLOW_OUT" }, "content": "From: Huiwen He <hehuiwen@kylinos.cn>\n\nv1->v2:\n - Sort arrays at build time\n - Merge nt_errs to ntstatus_to_dos_map\n - Check if arrays are sorted in smb1_init_maperror()\n\nv1: https://lore.kernel.org/linux-cifs/20251208062100.3268777-1-chenxiaosong.chenxiaosong@linux.dev/\n\nWhen searching for the last element, the comparison counts are shown in the table below:\n\n+--------------------+--------+--------+\n| |Before |After |\n| |Patchset|Patchset|\n+--------------------+--------+--------+\n| ntstatus_to_dos_map| 533 | 9 |\n+--------------------+--------+--------+\n|mapping_table_ERRDOS| 34 | 5 |\n+--------------------+--------+--------+\n|mapping_table_ERRSRV| 37 | 5 |\n+--------------------+--------+--------+\n\nThe following patches from v1 have already been merged into the mainline:\n - a71a4aab4834 smb/client: add parentheses to NT error code definitions containing bitwise OR operator\n - a9adafd40165 smb/client: add 4 NT error code definitions\n - 98def4eb0244 smb/server: remove unused nterr.h\n - 9f99caa8950a smb/client: fix NT_STATUS_UNABLE_TO_FREE_VM value\n - b2b50fca34da smb/client: fix NT_STATUS_DEVICE_DOOR_OPEN value\n - a1237c203f17 smb/client: fix NT_STATUS_NO_DATA_DETECTED value\n\nHuiwen He (8):\n smb/client: annotate nterr.h with DOS error codes\n smb/client: autogenerate SMB1 NT status to DOS error mapping\n smb/client: replace nt_errs with ntstatus_to_dos_map\n smb/client: refactor ntstatus_to_dos() to return mapping entry\n smb/client: use binary search for NT status to DOS mapping\n smb/client: annotate smberr.h with POSIX error codes\n smb/client: autogenerate SMB1 DOS/SRV to POSIX error mapping\n smb/client: use binary search for SMB1 DOS/SRV error mapping\n\nYouling Tang (4):\n smb/client: check if ntstatus_to_dos_map is sorted\n smb/client: introduce KUnit test to check ntstatus_to_dos_map search\n smb/client: check if SMB1 DOS/SRV error mapping arrays are sorted\n smb/client: introduce KUnit tests to check DOS/SRV err mapping search\n\n fs/smb/client/.gitignore | 3 +\n fs/smb/client/Kconfig | 11 +\n fs/smb/client/Makefile | 25 +-\n fs/smb/client/cifsfs.c | 6 +\n fs/smb/client/gen_smb1_mapping | 109 +++\n fs/smb/client/nterr.c | 704 -------------------\n fs/smb/client/nterr.h | 1082 +++++++++++++++--------------\n fs/smb/client/smb1maperror.c | 873 +++++------------------\n fs/smb/client/smb1maperror_test.c | 83 +++\n fs/smb/client/smb1proto.h | 9 +\n fs/smb/client/smberr.h | 415 +++++++----\n 11 files changed, 1232 insertions(+), 2088 deletions(-)\n create mode 100644 fs/smb/client/gen_smb1_mapping\n delete mode 100644 fs/smb/client/nterr.c\n create mode 100644 fs/smb/client/smb1maperror_test.c" }