diff options
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/fs/namei.c b/fs/namei.c index 5bcf3e93d350..76c0587d991f 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -4407,10 +4407,11 @@ SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, d /** * vfs_mkdir - create directory returning correct dentry if possible - * @idmap: idmap of the mount the inode was found from - * @dir: inode of the parent directory - * @dentry: dentry of the child directory - * @mode: mode of the child directory + * @idmap: idmap of the mount the inode was found from + * @dir: inode of the parent directory + * @dentry: dentry of the child directory + * @mode: mode of the child directory + * @delegated_inode: returns parent inode, if the inode is delegated. * * Create a directory. * @@ -4427,7 +4428,8 @@ SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, d * In case of an error the dentry is dput() and an ERR_PTR() is returned. */ struct dentry *vfs_mkdir(struct mnt_idmap *idmap, struct inode *dir, - struct dentry *dentry, umode_t mode) + struct dentry *dentry, umode_t mode, + struct delegated_inode *delegated_inode) { int error; unsigned max_links = dir->i_sb->s_max_links; @@ -4450,6 +4452,10 @@ struct dentry *vfs_mkdir(struct mnt_idmap *idmap, struct inode *dir, if (max_links && dir->i_nlink >= max_links) goto err; + error = try_break_deleg(dir, delegated_inode); + if (error) + goto err; + de = dir->i_op->mkdir(idmap, dir, dentry, mode); error = PTR_ERR(de); if (IS_ERR(de)) @@ -4473,6 +4479,7 @@ int do_mkdirat(int dfd, struct filename *name, umode_t mode) struct path path; int error; unsigned int lookup_flags = LOOKUP_DIRECTORY; + struct delegated_inode delegated_inode = { }; retry: dentry = filename_create(dfd, name, &path, lookup_flags); @@ -4484,11 +4491,16 @@ retry: mode_strip_umask(path.dentry->d_inode, mode)); if (!error) { dentry = vfs_mkdir(mnt_idmap(path.mnt), path.dentry->d_inode, - dentry, mode); + dentry, mode, &delegated_inode); if (IS_ERR(dentry)) error = PTR_ERR(dentry); } end_creating_path(&path, dentry); + if (is_delegated(&delegated_inode)) { + error = break_deleg_wait(&delegated_inode); + if (!error) + goto retry; + } if (retry_estale(error, lookup_flags)) { lookup_flags |= LOOKUP_REVAL; goto retry; |