From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f178.google.com (mail-pg1-f178.google.com [209.85.215.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 90C4D3E63AE for ; Tue, 14 Apr 2026 13:59:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776175173; cv=none; b=EfBP5vJBEZbmUz9/yL/oTu32QF6MfRKxW9RZEgyFzD7IvkJO9mCOJVz6xcIHvEx8rxDWnqmfntVRuBGYP3ArD/rjawaXJGynLEWPBXwi8CCZM6jLngrZ//4SBjr/HAQjR7J9th0dnv9Xcbyr5KmZ/X3OR//88bA47mjTo6lqMkI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776175173; c=relaxed/simple; bh=wQe+RhB85yi02jo020KLvcVHTJCqLGplUXNCsaMyMYA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cfv6iOnHUMghL+SMG+MbMlLkjuNRMOZBFbVd97pRb+yxZTcbZ32LpBRWy/IZYSqkReTXB2OGlyBxpogx4zBcgbRQST4L3RpwK6tcwCLWLTQs/3cczR0wful+6HRknr3GLJPF3HfqJlXjjWpBB6BUdKl7A+KMztVQ2xdAqIxmkF4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Pgc0cPgm; arc=none smtp.client-ip=209.85.215.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Pgc0cPgm" Received: by mail-pg1-f178.google.com with SMTP id 41be03b00d2f7-c70fb6aa323so2087639a12.3 for ; Tue, 14 Apr 2026 06:59:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776175172; x=1776779972; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=vJ/ecoS+iyPaqh9vg50r98KJRrVZjWdsD/kOJ7GPw5M=; b=Pgc0cPgmkuu2ENf8dxRlkRrmgXNei4Gq6m55Kc/fYkyUHWezHfQNblbOHwmxEl20w7 VpZFhIdnlEtRyNy2pUyGTiBFk7oFp3WKv4Jkm7V4oLY2OfGMcDLb2kzRJZXOEtvIqOl5 f5qE3PNZncXSewspbCGqqtJWIVCW77nVGivnnqJKUQssCXpzkMCgGy0tr8/5twZNu46E +lTrZOzTSjXXQekUL9VdIY/kRo2aXHAT/uhii8UHr4sx/nbLDoOHVC3V3fOglRN7C9fS wR6teb259lnujgRIFlDU5yYr48KcoB9UD0CuCVytySIa1SSoEQL4PiRZPyhvF2zjBzkp puQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776175172; x=1776779972; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=vJ/ecoS+iyPaqh9vg50r98KJRrVZjWdsD/kOJ7GPw5M=; b=mJoCjl6Ms55dwf6mQifRy4+2LGC+vQWLc+3u7vu0g9IVI1CR5Z+iduOey1rkXSs+sJ nbQpO3BMVH6kUNlGf2+5cZqZ3/MwJPpZvEk3odXotnith2MEmDIYl2m/Pc0hb68tjvU0 Ex3+/zDJ06IkjpueaxWMkJw1jMrWpDMoNEdI9ra846DGE2F6I5LmkAAqXzfHmRbrAt5B 7p4zGh3TgHNNyKpVfB0uICGEcXu5EGHvN6YnHirLZeuyUV6lUY1db70YzYHB0LoESn5x YTxLnaZ53Ag/E1PhJep0d/X0e1uYTyQAnXF8Ff8sPf6z8T/d9O/DZYwcUD87QxBvpoZD 6dAg== X-Forwarded-Encrypted: i=1; AFNElJ8dxNMimjDi/lFG5nUypYVI9GUIPjnjY2tcVWAk6SbERCspI8/NPSZD53lMW1UYM5R9SnbseXA=@vger.kernel.org X-Gm-Message-State: AOJu0YxwWVpTwdPj3H6IRUPMFZyWPyFD4PGg1aOoGBmgyTolvgBokFuA 3x2zLdMA9+m3E4EERK7pnEuGq/o+v/bcNx4L71sK1vM9hIwwwOwNDGY4 X-Gm-Gg: AeBDievAk39rFBz9hcglmOnd5wPPdIfRkhEljbYw9i3QhZevL6enwKGnsm18NTd+D/n XBG1D3P0TKGBe74dx6F3BtXFgTbUyUZPvaR2CWPktyOckOxLSxjWNZz5MIp9XKxhAFlwOaYxbEt WBGhR58/dv0LjmsJsUMw4zWjF5zJ7DT50NgZKFu0HpmF+MQns+vcWdew/sw/z3HC5wgVGvnWkIS swhC+tbO4PvhKFtuf2ulJwTcYNmUnz+T2w7GuLW5FljpI2gjfOy3TbsJxNXeosYn/4WU/1+I4Qy vZG6P4717jD+xLcUnIk1wJ16KKx7P0iTVCl4/BgSBP7RAnJGoHVVhcOdZ5CPs8my8A5SLdocz+y y10xmuGjqDX6xdL/+mwnZUM9s9Rg3eWi2a9V5D62OiTTTnz1M/Tpq2N05JoS0h0esaEOsrEr0DZ pCgUqsJa+Bey2K40LJtzRnwAYJnxqIJxk1pB0Q/N5PixnsF203/Xwh X-Received: by 2002:a05:6a21:3296:b0:39c:4af6:4309 with SMTP id adf61e73a8af0-39fe3c01179mr19500517637.12.1776175171649; Tue, 14 Apr 2026 06:59:31 -0700 (PDT) Received: from sprasad-dev1.corp.microsoft.com ([167.220.110.184]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b4612e60dasm59779895ad.38.2026.04.14.06.59.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Apr 2026 06:59:30 -0700 (PDT) From: nspmangalore@gmail.com X-Google-Original-From: sprasad@microsoft.com To: linux-cifs@vger.kernel.org, smfrench@gmail.com, pc@manguebit.com, bharathsm@microsoft.com, dhowells@redhat.com, henrique.carvalho@suse.com, ematsumiya@suse.de Cc: Shyam Prasad N , stable@vger.kernel.org Subject: [PATCH 3/7] cifs: invalidate cfid on unlink/rename/rmdir Date: Tue, 14 Apr 2026 19:29:14 +0530 Message-ID: <20260414135918.279802-3-sprasad@microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260414135918.279802-1-sprasad@microsoft.com> References: <20260414135918.279802-1-sprasad@microsoft.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Shyam Prasad N Today we do not invalidate the cached_dirent or the entire parent cfid when a dentry in a dir has been removed/moved. This change invalidates the parent cfid so that we don't serve directory contents from the cache. Cc: Signed-off-by: Shyam Prasad N --- fs/smb/client/inode.c | 40 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 38 insertions(+), 2 deletions(-) diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c index 888f9e35f14b8..e077df844c819 100644 --- a/fs/smb/client/inode.c +++ b/fs/smb/client/inode.c @@ -28,6 +28,23 @@ #include "cached_dir.h" #include "reparse.h" +static void cifs_invalidate_cached_dir(struct cifs_tcon *tcon, + struct dentry *parent) +{ + struct cached_fid *parent_cfid = NULL; + + if (!tcon || !parent) + return; + + if (!open_cached_dir_by_dentry(tcon, parent, &parent_cfid)) { + mutex_lock(&parent_cfid->dirents.de_mutex); + parent_cfid->dirents.is_valid = false; + parent_cfid->dirents.is_failed = true; + mutex_unlock(&parent_cfid->dirents.de_mutex); + close_cached_dir(parent_cfid); + } +} + /* * Set parameters for the netfs library */ @@ -322,7 +339,7 @@ cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, fattr->cf_uid = uid; } } - + fattr->cf_gid = cifs_sb->ctx->linux_gid; if (!(sbflags & CIFS_MOUNT_OVERR_GID)) { u64 id = le64_to_cpu(info->Gid); @@ -2067,6 +2084,9 @@ static int __cifs_unlink(struct inode *dir, struct dentry *dentry, bool sillyren cifs_set_file_info(inode, attrs, xid, full_path, origattr); out_reval: + if (!rc && dentry->d_parent) + cifs_invalidate_cached_dir(tcon, dentry->d_parent); + if (inode) { cifs_inode = CIFS_I(inode); cifs_inode->time = 0; /* will force revalidate to get info @@ -2378,7 +2398,6 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) } rc = server->ops->rmdir(xid, tcon, full_path, cifs_sb); - cifs_put_tlink(tlink); cifsInode = CIFS_I(d_inode(direntry)); @@ -2388,6 +2407,8 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) i_size_write(d_inode(direntry), 0); clear_nlink(d_inode(direntry)); spin_unlock(&d_inode(direntry)->i_lock); + if (direntry->d_parent) + cifs_invalidate_cached_dir(tcon, direntry->d_parent); } /* force revalidate to go get info when needed */ @@ -2402,6 +2423,7 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry) inode_set_ctime_current(d_inode(direntry)); inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode)); + cifs_put_tlink(tlink); rmdir_exit: free_dentry_path(page); @@ -2501,6 +2523,8 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir, struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; struct cifs_tcon *tcon; + struct dentry *source_parent; + struct dentry *target_parent; bool rehash = false; unsigned int xid; int rc, tmprc; @@ -2532,6 +2556,8 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir, if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); + source_parent = source_dentry->d_parent ? dget(source_dentry->d_parent) : NULL; + target_parent = target_dentry->d_parent ? dget(target_dentry->d_parent) : NULL; server = tcon->ses->server; page1 = alloc_dentry_path(); @@ -2668,11 +2694,21 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir, } /* force revalidate to go get info when needed */ + if (!rc) { + cifs_invalidate_cached_dir(tcon, source_parent); + if (target_parent != source_parent) + cifs_invalidate_cached_dir(tcon, target_parent); + } + CIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0; cifs_rename_exit: if (rehash) d_rehash(target_dentry); + if (target_parent) + dput(target_parent); + if (source_parent) + dput(source_parent); kfree(info_buf_source); free_dentry_path(page2); free_dentry_path(page1); -- 2.43.0