vfs: fix mkdirat to retry once on an ESTALE error (b76d8b82) · Commits · e / devices / android_kernel_fairphone_FP3

fs/namei.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -3243,8 +3243,10 @@ SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode)
		struct dentry *dentry;
		struct path path;
		int error;
		unsigned int lookup_flags = LOOKUP_DIRECTORY;

		dentry = user_path_create(dfd, pathname, &path, LOOKUP_DIRECTORY);
		retry:
		dentry = user_path_create(dfd, pathname, &path, lookup_flags);
		if (IS_ERR(dentry))
		return PTR_ERR(dentry);

		@@ -3254,6 +3256,10 @@ SYSCALL_DEFINE3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode)
		if (!error)
		error = vfs_mkdir(path.dentry->d_inode, dentry, mode);
		done_path_create(&path, dentry);
		if (retry_estale(error, lookup_flags)) {
		lookup_flags \|= LOOKUP_REVAL;
		goto retry;
		}
		return error;
		}