vfs: fix mknodat to retry on ESTALE errors (972567f1) · Commits · e / devices / android_kernel_fairphone_FP3

fs/namei.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -3172,12 +3172,13 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
		struct dentry *dentry;
		struct path path;
		int error;
		unsigned int lookup_flags = 0;

		error = may_mknod(mode);
		if (error)
		return error;

		dentry = user_path_create(dfd, filename, &path, 0);
		retry:
		dentry = user_path_create(dfd, filename, &path, lookup_flags);
		if (IS_ERR(dentry))
		return PTR_ERR(dentry);

		@@ -3200,6 +3201,10 @@ SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
		}
		out:
		done_path_create(&path, dentry);
		if (retry_estale(error, lookup_flags)) {
		lookup_flags \|= LOOKUP_REVAL;
		goto retry;
		}
		return error;
		}