Commit e7847d35 authored by Fabio M. Di Nitto's avatar Fabio M. Di Nitto Committed by David Teigland
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dlm: align midcomms message buffer 



gcc does not guarantee that an auto buffer is 64bit aligned.
This change allows sparc64 to work.

Signed-off-by: default avatarFabio M. Di Nitto <fabbione@ubuntu.com>
Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent 39bd4177

fs/dlm/midcomms.c

+9 −6
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
*******************************************************************************

**

**  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.

**  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.

**  Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.

**

**  This copyrighted material is made available to anyone wishing to use,

**  modify, copy, or redistribute it subject to the terms and conditions
@@ -58,8 +58,12 @@ static void copy_from_cb(void *dst, const void *base, unsigned offset, 
int dlm_process_incoming_buffer(int nodeid, const void *base,

				unsigned offset, unsigned len, unsigned limit)

{

	unsigned char __tmp[DLM_INBUF_LEN];

	struct dlm_header *msg = (struct dlm_header *) __tmp;

	union {

		unsigned char __buf[DLM_INBUF_LEN];

		/* this is to force proper alignment on some arches */

		struct dlm_header dlm;

	} __tmp;

	struct dlm_header *msg = &__tmp.dlm;

	int ret = 0;

	int err = 0;

	uint16_t msglen;
@@ -100,8 +104,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base, 
		   in the buffer on the stack (which should work for most

		   ordinary messages). */



		if (msglen > sizeof(__tmp) &&

		    msg == (struct dlm_header *) __tmp) {

		if (msglen > DLM_INBUF_LEN && msg == &__tmp.dlm) {

			msg = kmalloc(dlm_config.ci_buffer_size, GFP_KERNEL);

			if (msg == NULL)

				return ret;
@@ -119,7 +122,7 @@ int dlm_process_incoming_buffer(int nodeid, const void *base, 
		dlm_receive_buffer(msg, nodeid);

	}



	if (msg != (struct dlm_header *) __tmp)

	if (msg != &__tmp.dlm)

		kfree(msg);



	return err ? err : ret;