4 files changed, 56 insertions, 18 deletions

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index bce66f56c62c..8bb5507e822f 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -534,38 +534,50 @@ v9fs_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid,
 /**
  * v9fs_remove - helper function to remove files and directories
  * @dir: directory inode that is being deleted
- * @file:  dentry that is being deleted
+ * @dentry:  dentry that is being deleted
  * @rmdir: removing a directory
  *
  */
 
-static int v9fs_remove(struct inode *dir, struct dentry *file, int rmdir)
+static int v9fs_remove(struct inode *dir, struct dentry *dentry, int flags)
 {
-        int retval;
-        struct p9_fid *v9fid;
-        struct inode *file_inode;
-
-        P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %d\n", dir, file,
-                rmdir);
+        struct inode *inode;
+        int retval = -EOPNOTSUPP;
+        struct p9_fid *v9fid, *dfid;
+        struct v9fs_session_info *v9ses;
 
-        file_inode = file->d_inode;
-        v9fid = v9fs_fid_clone(file);
-        if (IS_ERR(v9fid))
-                return PTR_ERR(v9fid);
+        P9_DPRINTK(P9_DEBUG_VFS, "inode: %p dentry: %p rmdir: %x\n",
+                   dir, dentry, flags);
 
-        retval = p9_client_remove(v9fid);
+        v9ses = v9fs_inode2v9ses(dir);
+        inode = dentry->d_inode;
+        dfid = v9fs_fid_lookup(dentry->d_parent);
+        if (IS_ERR(dfid)) {
+                retval = PTR_ERR(dfid);
+                P9_DPRINTK(P9_DEBUG_VFS, "fid lookup failed %d\n", retval);
+                return retval;
+        }
+        if (v9fs_proto_dotl(v9ses))
+                retval = p9_client_unlinkat(dfid, dentry->d_name.name, flags);
+        if (retval == -EOPNOTSUPP) {
+                /* Try the one based on path */
+                v9fid = v9fs_fid_clone(dentry);
+                if (IS_ERR(v9fid))
+                        return PTR_ERR(v9fid);
+                retval = p9_client_remove(v9fid);
+        }
         if (!retval) {
                 /*
                  * directories on unlink should have zero
                  * link count
                  */
-                if (rmdir) {
-                        clear_nlink(file_inode);
+                if (flags & AT_REMOVEDIR) {
+                        clear_nlink(inode);
                         drop_nlink(dir);
                 } else
-                        drop_nlink(file_inode);
+                        drop_nlink(inode);
 
-                v9fs_invalidate_inode_attr(file_inode);
+                v9fs_invalidate_inode_attr(inode);
                 v9fs_invalidate_inode_attr(dir);
         }
         return retval;
@@ -856,7 +868,7 @@ int v9fs_vfs_unlink(struct inode *i, struct dentry *d)
 
 int v9fs_vfs_rmdir(struct inode *i, struct dentry *d)
 {
-        return v9fs_remove(i, d, 1);
+        return v9fs_remove(i, d, AT_REMOVEDIR);
 }
 
 /**
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 61156207c98c..342dcf13d039 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -183,6 +183,8 @@ enum p9_msg_t {
         P9_RMKDIR,
         P9_TRENAMEAT = 74,
         P9_RRENAMEAT,
+        P9_TUNLINKAT = 76,
+        P9_RUNLINKAT,
         P9_TVERSION = 100,
         P9_RVERSION,
         P9_TAUTH = 102,
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index 62ceddf9994a..55ce72ce9861 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -234,6 +234,7 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode,
 int p9_client_clunk(struct p9_fid *fid);
 int p9_client_fsync(struct p9_fid *fid, int datasync);
 int p9_client_remove(struct p9_fid *fid);
+int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags);
 int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,
                                                         u64 offset, u32 count);
 int p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
diff --git a/net/9p/client.c b/net/9p/client.c
index c4b77f383582..a953baa3624e 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1303,6 +1303,29 @@ error:
 }
 EXPORT_SYMBOL(p9_client_remove);
 
+int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags)
+{
+        int err = 0;
+        struct p9_req_t *req;
+        struct p9_client *clnt;
+
+        P9_DPRINTK(P9_DEBUG_9P, ">>> TUNLINKAT fid %d %s %d\n",
+                   dfid->fid, name, flags);
+
+        clnt = dfid->clnt;
+        req = p9_client_rpc(clnt, P9_TUNLINKAT, "dsd", dfid->fid, name, flags);
+        if (IS_ERR(req)) {
+                err = PTR_ERR(req);
+                goto error;
+        }
+        P9_DPRINTK(P9_DEBUG_9P, "<<< RUNLINKAT fid %d %s\n", dfid->fid, name);
+
+        p9_free_req(clnt, req);
+error:
+        return err;
+}
+EXPORT_SYMBOL(p9_client_unlinkat);
+
 int
 p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
                                                                 u32 count)