Merge branch 'merge-xtradb-5.5' into 5.5

storage/xtradb/dict/dict0crea.c

 /*****************************************************************************
 
-Copyright (c) 1996, 2014, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1255,7 +1255,7 @@ dict_create_index_step(
 			>= DICT_TF_FORMAT_ZIP);
 
 		node->index = dict_index_get_if_in_cache_low(index_id);
-		ut_a((node->index == 0) == (err != DB_SUCCESS));
+		ut_a((node->index == NULL) == (err != DB_SUCCESS));
 
 		if (err != DB_SUCCESS) {
 

storage/xtradb/include/os0sync.h

 /*****************************************************************************
 
-Copyright (c) 1995, 2015, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
 
 Portions of this file contain modifications contributed and copyrighted by
@@ -41,7 +41,6 @@ Created 9/6/1995 Heikki Tuuri
     || defined _M_X64 || defined __WIN__
 
 #define IB_STRONG_MEMORY_MODEL
-#undef HAVE_IB_GCC_ATOMIC_TEST_AND_SET // Quick-and-dirty fix for bug 1519094
 
 #endif /* __i386__ || __x86_64__ || _M_IX86 || M_X64 || __WIN__ */
 
@@ -369,28 +368,7 @@ Returns the old value of *ptr, atomically sets *ptr to new_val */
 # define os_atomic_test_and_set_byte_acquire(ptr, new_val) \
 	__sync_lock_test_and_set(ptr, (byte) new_val)
 
-# if defined(HAVE_IB_GCC_ATOMIC_TEST_AND_SET)
-
-/** Do an atomic test-and-set.
-@param[in,out]	ptr		Memory location to set to non-zero
-@return the previous value */
-static inline
-lock_word_t
-os_atomic_test_and_set(volatile lock_word_t* ptr)
-{
-       return(__atomic_test_and_set(ptr, __ATOMIC_ACQUIRE));
-}
-
-/** Do an atomic clear.
-@param[in,out]	ptr		Memory location to set to zero */
-static inline
-void
-os_atomic_clear(volatile lock_word_t* ptr)
-{
-	__atomic_clear(ptr, __ATOMIC_RELEASE);
-}
-
-# elif defined(IB_STRONG_MEMORY_MODEL)
+# if defined(IB_STRONG_MEMORY_MODEL)
 
 /** Do an atomic test and set.
 @param[in,out]	ptr		Memory location to set to non-zero
@@ -419,6 +397,27 @@ os_atomic_clear(volatile lock_word_t* ptr)
 	return(__sync_lock_test_and_set(ptr, 0));
 }
 
+# elif defined(HAVE_IB_GCC_ATOMIC_TEST_AND_SET)
+
+/** Do an atomic test-and-set.
+@param[in,out]	ptr		Memory location to set to non-zero
+@return the previous value */
+static inline
+lock_word_t
+os_atomic_test_and_set(volatile lock_word_t* ptr)
+{
+       return(__atomic_test_and_set(ptr, __ATOMIC_ACQUIRE));
+}
+
+/** Do an atomic clear.
+@param[in,out]	ptr		Memory location to set to zero */
+static inline
+void
+os_atomic_clear(volatile lock_word_t* ptr)
+{
+	__atomic_clear(ptr, __ATOMIC_RELEASE);
+}
+
 # else
 
 #  error "Unsupported platform"

storage/xtradb/include/univ.i

@@ -64,10 +64,10 @@ component, i.e. we show M.N.P as M.N */
 	(INNODB_VERSION_MAJOR << 8 | INNODB_VERSION_MINOR)
 
 #ifndef PERCONA_INNODB_VERSION
-#define PERCONA_INNODB_VERSION 37.8
+#define PERCONA_INNODB_VERSION 37.9
 #endif
 
-#define INNODB_VERSION_STR	"5.5.48-MariaDB-" IB_TO_STR(PERCONA_INNODB_VERSION)
+#define INNODB_VERSION_STR	"5.5.49-MariaDB-" IB_TO_STR(PERCONA_INNODB_VERSION)
 
 #define REFMAN "http://dev.mysql.com/doc/refman/"	\
 	IB_TO_STR(MYSQL_MAJOR_VERSION) "."		\

storage/xtradb/log/log0recv.c

 /*****************************************************************************
 
-Copyright (c) 1997, 2015, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 1997, 2016, Oracle and/or its affiliates. All Rights Reserved.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1844,7 +1844,7 @@ loop:
 		goto loop;
 	}
 
-	ut_ad((allow_ibuf == 0) == (mutex_own(&log_sys->mutex) != 0));
+	ut_ad((!allow_ibuf) == mutex_own(&log_sys->mutex));
 
 	if (!allow_ibuf) {
 		recv_no_ibuf_operations = TRUE;

storage/xtradb/os/os0file.c

@@ -471,6 +471,43 @@ PIMAGE_TLS_CALLBACK p_thread_callback_base = win_tls_thread_exit;
 #endif 
 #endif /*_WIN32 */
 
+/***********************************************************************//**
+For an EINVAL I/O error, prints a diagnostic message if innodb_flush_method
+== ALL_O_DIRECT.
+@return TRUE if the diagnostic message was printed
+@return FALSE if the diagnostic message does not apply */
+static
+ibool
+os_diagnose_all_o_direct_einval(
+/*============================*/
+	ulint err)	/*!< in: C error code */
+{
+	if ((err == EINVAL)
+	    && (srv_unix_file_flush_method == SRV_UNIX_ALL_O_DIRECT)) {
+		fprintf(stderr,
+			"InnoDB: The error might be caused by redo log I/O "
+			"not satisfying innodb_flush_method=ALL_O_DIRECT "
+			"requirements by the underlying file system.\n");
+		if (srv_log_block_size != 512)
+			fprintf(stderr,
+				"InnoDB: This might be caused by an "
+				"incompatible non-default "
+				"innodb_log_block_size value %lu.\n",
+				srv_log_block_size);
+		fprintf(stderr,
+			"InnoDB: Please file a bug at "
+			"https://bugs.percona.com and include this error "
+			"message, my.cnf settings, and information about the "
+			"file system where the redo log resides.\n");
+		fprintf(stderr,
+			"InnoDB: A possible workaround is to change "
+			"innodb_flush_method value to something else "
+			"than ALL_O_DIRECT.\n");
+		return(TRUE);
+	}
+	return(FALSE);
+}
+
 /***********************************************************************//**
 Retrieves the last error number if an error occurs in a file io function.
 The number should be retrieved before any other OS calls (because they may
@@ -596,7 +633,7 @@ os_file_get_last_error(
 				"InnoDB: The error means mysqld does not have"
 				" the access rights to\n"
 				"InnoDB: the directory.\n");
-		} else {
+		} else if (!os_diagnose_all_o_direct_einval(err)) {
 			if (strerror((int)err) != NULL) {
 				fprintf(stderr,
 					"InnoDB: Error number %lu"
@@ -2622,6 +2659,9 @@ os_file_pwrite(
 	/* Handle partial writes and signal interruptions correctly */
 	for (ret = 0; ret < (ssize_t) n; ) {
 		n_written = pwrite(file, buf, (ssize_t)n - ret, offs);
+		DBUG_EXECUTE_IF("xb_simulate_all_o_direct_write_failure",
+				n_written = -1;
+				errno = EINVAL;);
 		if (n_written >= 0) {
 			ret += n_written;
 			offs += n_written;
@@ -2787,6 +2827,10 @@ try_again:
 try_again:
 	ret = os_file_pread(file, buf, n, offset, offset_high, trx);
 
+	DBUG_EXECUTE_IF("xb_simulate_all_o_direct_read_failure",
+			ret = -1;
+			errno = EINVAL;);
+
 	if ((ulint)ret == n) {
 
 		return(TRUE);
@@ -3084,6 +3128,8 @@ retry:
 			"InnoDB: "
 			REFMAN "operating-system-error-codes.html\n");
 
+		os_diagnose_all_o_direct_einval(errno);
+
 		os_has_said_disk_full = TRUE;
 	}