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GET /api/patches/2225527/?format=api
{ "id": 2225527, "url": "http://patchwork.ozlabs.org/api/patches/2225527/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260421063955.99164-3-sprasad@microsoft.com/", "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": "<20260421063955.99164-3-sprasad@microsoft.com>", "list_archive_url": null, "date": "2026-04-21T06:39:51", "name": "[v2,3/7] 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=api", "name": "Shyam Prasad N", "email": "nspmangalore@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260421063955.99164-3-sprasad@microsoft.com/mbox/", "series": [ { "id": 500744, "url": "http://patchwork.ozlabs.org/api/series/500744/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=500744", "date": "2026-04-21T06:39:49", "name": "[v2,1/7] cifs: change_conf needs to be called for session setup", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500744/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225527/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225527/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-cifs+bounces-10977-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", 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"linux-cifs@vger.kernel.org,\n\tsmfrench@gmail.com,\n\tpc@manguebit.org,\n\tbharathsm@microsoft.com,\n\tdhowells@redhat.com,\n\thenrique.carvalho@suse.com,\n\tematsumiya@suse.de", "Cc": "Shyam Prasad N <sprasad@microsoft.com>,\n\tstable@vger.kernel.org", "Subject": "[PATCH v2 3/7] cifs: invalidate cfid on unlink/rename/rmdir", "Date": "Tue, 21 Apr 2026 12:09:51 +0530", "Message-ID": "<20260421063955.99164-3-sprasad@microsoft.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260421063955.99164-1-sprasad@microsoft.com>", "References": "<20260421063955.99164-1-sprasad@microsoft.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" }, "content": "From: Shyam Prasad N <sprasad@microsoft.com>\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: <stable@vger.kernel.org>\nSigned-off-by: Shyam Prasad N <sprasad@microsoft.com>\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": [ "v2", "3/7" ] }