Fix error on trim operation alligment. Furthermore, make sure that

we do not return simulated out of file space on read operation,
that would cause crash.

Author: Jan Lindström

storage/innobase/fil/fil0pagecompress.cc

@@ -456,9 +456,15 @@ fil_compress_page(
 
 	/* Actual write needs to be alligned on block size */
 	if (write_size % block_size) {
+#ifdef UNIV_DEBUG
+		size_t tmp = write_size;
 		ut_a(block_size > 0);
-		write_size = (write_size + block_size-1) & ~(block_size-1);
-		ut_a((write_size % block_size) == 0);
+#endif
+		write_size =  (size_t)ut_uint64_align_up((ib_uint64_t)write_size, block_size);
+#ifdef UNIV_DEBUG
+		ut_a(write_size > 0 && ((write_size % block_size) == 0));
+		ut_a(write_size >= tmp);
+#endif
 	}
 
 #ifdef UNIV_PAGECOMPRESS_DEBUG

storage/innobase/os/os0file.cc

@@ -5018,12 +5018,12 @@ os_aio_func(
 			ret = os_file_write_func(name, file, buf, offset, n);
 		}
 
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			os_has_said_disk_full = FALSE;);
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			ret = 0;);
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			errno = 28;);
+		if (type == OS_FILE_WRITE) {
+			DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
+				os_has_said_disk_full = FALSE;
+				ret = 0;
+				errno = 28;);
+		}
 
 		return ret;
 	}
@@ -6356,6 +6356,11 @@ os_file_trim(
 	ut_ad((len % bsize) == 0);
 	ut_ad(bsize != 0);
 
+#ifdef UNIV_TRIM_DEBUG
+	fprintf(stderr, "Note: TRIM: write_size %lu trim_len %lu len %lu off %lu\n",
+		*slot->write_size, trim_len, len, off);
+#endif
+
 	// Nothing to do if trim length is zero or if actual write
 	// size is initialized and it is smaller than current write size.
 	// In first write if we trim we set write_size to actual bytes

storage/xtradb/fil/fil0pagecompress.cc

@@ -453,9 +453,15 @@ fil_compress_page(
 
 	/* Actual write needs to be alligned on block size */
 	if (write_size % block_size) {
+#ifdef UNIV_DEBUG
+		size_t tmp = write_size;
 		ut_a(block_size > 0);
-		write_size = (write_size + block_size-1) & ~(block_size-1);
-		ut_a((write_size % block_size) == 0);
+#endif
+		write_size =  (size_t)ut_uint64_align_up((ib_uint64_t)write_size, block_size);
+#ifdef UNIV_DEBUG
+		ut_a(write_size > 0 && ((write_size % block_size) == 0));
+		ut_a(write_size >= tmp);
+#endif
 	}
 
 #ifdef UNIV_PAGECOMPRESS_DEBUG

storage/xtradb/os/os0file.cc

@@ -5115,12 +5115,12 @@ os_aio_func(
 			ret = os_file_write(name, file, buf, offset, n);
 		}
 
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			os_has_said_disk_full = FALSE;);
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			ret = 0;);
-		DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
-			errno = 28;);
+		if (type == OS_FILE_WRITE) {
+			DBUG_EXECUTE_IF("ib_os_aio_func_io_failure_28",
+				os_has_said_disk_full = FALSE;
+				ret = 0;
+				errno = 28;);
+		}
 
 		if (!ret) {
 			fprintf(stderr, "FAIL");
@@ -6459,6 +6459,11 @@ os_file_trim(
 	ut_ad((len % bsize) == 0);
 	ut_ad(bsize != 0);
 
+#ifdef UNIV_TRIM_DEBUG
+	fprintf(stderr, "Note: TRIM: write_size %lu trim_len %lu len %lu off %lu\n",
+		*slot->write_size, trim_len, len, off);
+#endif
+
 	// Nothing to do if trim length is zero or if actual write
 	// size is initialized and it is smaller than current write size.
 	// In first write if we trim we set write_size to actual bytes