{"id":2223131,"url":"http://patchwork.ozlabs.org/api/patches/2223131/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260414135918.279802-3-sprasad@microsoft.com/","project":{"id":12,"url":"http://patchwork.ozlabs.org/api/projects/12/?format=json","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":"<20260414135918.279802-3-sprasad@microsoft.com>","list_archive_url":null,"date":"2026-04-14T13:59:14","name":"[3/7] cifs: invalidate cfid on unlink/rename/rmdir","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a31a1adfd5ea52a0e35c676d0258a1ef4219a247","submitter":{"id":79368,"url":"http://patchwork.ozlabs.org/api/people/79368/?format=json","name":"Shyam Prasad N","email":"nspmangalore@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260414135918.279802-3-sprasad@microsoft.com/mbox/","series":[{"id":499852,"url":"http://patchwork.ozlabs.org/api/series/499852/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=499852","date":"2026-04-14T13:59:12","name":"[1/7] cifs: change_conf needs to be called for session setup","version":1,"mbox":"http://patchwork.ozlabs.org/series/499852/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223131/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2223131/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","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 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(PDT)","From":"nspmangalore@gmail.com","X-Google-Original-From":"sprasad@microsoft.com","To":"linux-cifs@vger.kernel.org,\n\tsmfrench@gmail.com,\n\tpc@manguebit.com,\n\tbharathsm@microsoft.com,\n\tdhowells@redhat.com,\n\thenrique.carvalho@suse.com,\n\tematsumiya@suse.de","Cc":"Shyam Prasad N ,\n\tstable@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":"linux-cifs@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"From: Shyam Prasad N \n\nToday we do not invalidate the cached_dirent or the entire\nparent cfid when a dentry in a dir has been removed/moved.\n\nThis change invalidates the parent cfid so that we don't serve\ndirectory contents from the cache.\n\nCc: \nSigned-off-by: Shyam Prasad N \n---\n fs/smb/client/inode.c | 40 ++++++++++++++++++++++++++++++++++++++--\n 1 file changed, 38 insertions(+), 2 deletions(-)","diff":"diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c\nindex 888f9e35f14b8..e077df844c819 100644\n--- a/fs/smb/client/inode.c\n+++ b/fs/smb/client/inode.c\n@@ -28,6 +28,23 @@\n #include \"cached_dir.h\"\n #include \"reparse.h\"\n \n+static void cifs_invalidate_cached_dir(struct cifs_tcon *tcon,\n+\t\t\t\t struct dentry *parent)\n+{\n+\tstruct cached_fid *parent_cfid = NULL;\n+\n+\tif (!tcon || !parent)\n+\t\treturn;\n+\n+\tif (!open_cached_dir_by_dentry(tcon, parent, &parent_cfid)) {\n+\t\tmutex_lock(&parent_cfid->dirents.de_mutex);\n+\t\tparent_cfid->dirents.is_valid = false;\n+\t\tparent_cfid->dirents.is_failed = true;\n+\t\tmutex_unlock(&parent_cfid->dirents.de_mutex);\n+\t\tclose_cached_dir(parent_cfid);\n+\t}\n+}\n+\n /*\n * Set parameters for the netfs library\n */\n@@ -322,7 +339,7 @@ cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info,\n \t\t\t\tfattr->cf_uid = uid;\n \t\t}\n \t}\n-\t\n+\n \tfattr->cf_gid = cifs_sb->ctx->linux_gid;\n \tif (!(sbflags & CIFS_MOUNT_OVERR_GID)) {\n \t\tu64 id = le64_to_cpu(info->Gid);\n@@ -2067,6 +2084,9 @@ static int __cifs_unlink(struct inode *dir, struct dentry *dentry, bool sillyren\n \t\tcifs_set_file_info(inode, attrs, xid, full_path, origattr);\n \n out_reval:\n+\tif (!rc && dentry->d_parent)\n+\t\tcifs_invalidate_cached_dir(tcon, dentry->d_parent);\n+\n \tif (inode) {\n \t\tcifs_inode = CIFS_I(inode);\n \t\tcifs_inode->time = 0;\t/* will force revalidate to get info\n@@ -2378,7 +2398,6 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)\n \t}\n \n \trc = server->ops->rmdir(xid, tcon, full_path, cifs_sb);\n-\tcifs_put_tlink(tlink);\n \n \tcifsInode = CIFS_I(d_inode(direntry));\n \n@@ -2388,6 +2407,8 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)\n \t\ti_size_write(d_inode(direntry), 0);\n \t\tclear_nlink(d_inode(direntry));\n \t\tspin_unlock(&d_inode(direntry)->i_lock);\n+\t\tif (direntry->d_parent)\n+\t\t\tcifs_invalidate_cached_dir(tcon, direntry->d_parent);\n \t}\n \n \t/* force revalidate to go get info when needed */\n@@ -2402,6 +2423,7 @@ int cifs_rmdir(struct inode *inode, struct dentry *direntry)\n \n \tinode_set_ctime_current(d_inode(direntry));\n \tinode_set_mtime_to_ts(inode, inode_set_ctime_current(inode));\n+\tcifs_put_tlink(tlink);\n \n rmdir_exit:\n \tfree_dentry_path(page);\n@@ -2501,6 +2523,8 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir,\n \tstruct cifs_sb_info *cifs_sb;\n \tstruct tcon_link *tlink;\n \tstruct cifs_tcon *tcon;\n+\tstruct dentry *source_parent;\n+\tstruct dentry *target_parent;\n \tbool rehash = false;\n \tunsigned int xid;\n \tint rc, tmprc;\n@@ -2532,6 +2556,8 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir,\n \tif (IS_ERR(tlink))\n \t\treturn PTR_ERR(tlink);\n \ttcon = tlink_tcon(tlink);\n+\tsource_parent = source_dentry->d_parent ? dget(source_dentry->d_parent) : NULL;\n+\ttarget_parent = target_dentry->d_parent ? dget(target_dentry->d_parent) : NULL;\n \tserver = tcon->ses->server;\n \n \tpage1 = alloc_dentry_path();\n@@ -2668,11 +2694,21 @@ cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir,\n \t}\n \n \t/* force revalidate to go get info when needed */\n+\tif (!rc) {\n+\t\tcifs_invalidate_cached_dir(tcon, source_parent);\n+\t\tif (target_parent != source_parent)\n+\t\t\tcifs_invalidate_cached_dir(tcon, target_parent);\n+\t}\n+\n \tCIFS_I(source_dir)->time = CIFS_I(target_dir)->time = 0;\n \n cifs_rename_exit:\n \tif (rehash)\n \t\td_rehash(target_dentry);\n+\tif (target_parent)\n+\t\tdput(target_parent);\n+\tif (source_parent)\n+\t\tdput(source_parent);\n \tkfree(info_buf_source);\n \tfree_dentry_path(page2);\n \tfree_dentry_path(page1);\n","prefixes":["3/7"]}