[XFS] clean up some xfs_log_priv.h macros

- the various assign lsn macros are replaced by a single inline,
xlog_assign_lsn, which is equivalent to ASSIGN_ANY_LSN_HOST except
for a more sane calling convention. ASSIGN_LSN_DISK is replaced
by xlog_assign_lsn and a manual bytespap, and ASSIGN_LSN by the same,
except we pass the cycle and block arguments explicitly instead of a
log paramter. The latter two variants only had 2, respectively one
user anyway.
- the GET_CYCLE is replaced by a xlog_get_cycle inline with exactly the
same calling conventions.
- GET_CLIENT_ID is replaced by xlog_get_client_id which leaves away
the unused arch argument. Instead of conditional defintions
depending on host endianess we now do an unconditional swap and shift
then, which generates equal code.
- the unused XLOG_SET macro is removed.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29820a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

fs/xfs/xfs_log.c

@@ -1829,7 +1829,7 @@ xlog_write(xfs_mount_t *	mp,
 	     */
 	    if (ticket->t_flags & XLOG_TIC_INITED) {
 		logop_head		= (xlog_op_header_t *)ptr;
-		INT_SET(logop_head->oh_tid, ARCH_CONVERT, ticket->t_tid);
+		logop_head->oh_tid	= cpu_to_be32(ticket->t_tid);
 		logop_head->oh_clientid = ticket->t_clientid;
 		logop_head->oh_len	= 0;
 		logop_head->oh_flags    = XLOG_START_TRANS;
@@ -1843,7 +1843,7 @@ xlog_write(xfs_mount_t *	mp,
 
 	    /* Copy log operation header directly into data section */
 	    logop_head			= (xlog_op_header_t *)ptr;
-	    INT_SET(logop_head->oh_tid, ARCH_CONVERT, ticket->t_tid);
+	    logop_head->oh_tid		= cpu_to_be32(ticket->t_tid);
 	    logop_head->oh_clientid	= ticket->t_clientid;
 	    logop_head->oh_res2		= 0;
 
@@ -1878,13 +1878,14 @@ xlog_write(xfs_mount_t *	mp,
 
 	    copy_off = partial_copy_len;
 	    if (need_copy <= iclog->ic_size - log_offset) { /*complete write */
-		INT_SET(logop_head->oh_len, ARCH_CONVERT, copy_len = need_copy);
+	        copy_len = need_copy;
+		logop_head->oh_len = cpu_to_be32(copy_len);
 		if (partial_copy)
 		    logop_head->oh_flags|= (XLOG_END_TRANS|XLOG_WAS_CONT_TRANS);
 		partial_copy_len = partial_copy = 0;
 	    } else {					    /* partial write */
 		copy_len = iclog->ic_size - log_offset;
-		INT_SET(logop_head->oh_len, ARCH_CONVERT, copy_len);
+		logop_head->oh_len = cpu_to_be32(copy_len);
 		logop_head->oh_flags |= XLOG_CONTINUE_TRANS;
 		if (partial_copy)
 			logop_head->oh_flags |= XLOG_WAS_CONT_TRANS;
@@ -3504,7 +3505,7 @@ xlog_verify_iclog(xlog_t	 *log,
 		field_offset = (__psint_t)
 			       ((xfs_caddr_t)&(ophead->oh_len) - base_ptr);
 		if (syncing == B_FALSE || (field_offset & 0x1ff)) {
-			op_len = INT_GET(ophead->oh_len, ARCH_CONVERT);
+			op_len = be32_to_cpu(ophead->oh_len);
 		} else {
 			idx = BTOBBT((__psint_t)&ophead->oh_len -
 				    (__psint_t)iclog->ic_datap);

fs/xfs/xfs_log_priv.h

@@ -265,11 +265,11 @@ typedef struct xlog_ticket {
 
 
 typedef struct xlog_op_header {
-	xlog_tid_t oh_tid;	/* transaction id of operation	:  4 b */
-	int	   oh_len;	/* bytes in data region		:  4 b */
-	__uint8_t  oh_clientid;	/* who sent me this		:  1 b */
-	__uint8_t  oh_flags;	/*				:  1 b */
-	ushort	   oh_res2;	/* 32 bit align			:  2 b */
+	__be32	   oh_tid;	/* transaction id of operation	:  4 b */
+	__be32	   oh_len;	/* bytes in data region		:  4 b */
+	__u8	   oh_clientid;	/* who sent me this		:  1 b */
+	__u8	   oh_flags;	/*				:  1 b */
+	__u16	   oh_res2;	/* 32 bit align			:  2 b */
 } xlog_op_header_t;
 
 

fs/xfs/xfs_log_recover.c

@@ -2916,7 +2916,7 @@ xlog_recover_process_data(
 			ASSERT(0);
 			return (XFS_ERROR(EIO));
 		}
-		tid = INT_GET(ohead->oh_tid, ARCH_CONVERT);
+		tid = be32_to_cpu(ohead->oh_tid);
 		hash = XLOG_RHASH(tid);
 		trans = xlog_recover_find_tid(rhash[hash], tid);
 		if (trans == NULL) {		   /* not found; add new tid */
@@ -2924,7 +2924,7 @@ xlog_recover_process_data(
 				xlog_recover_new_tid(&rhash[hash], tid,
 					INT_GET(rhead->h_lsn, ARCH_CONVERT));
 		} else {
-			ASSERT(dp+INT_GET(ohead->oh_len, ARCH_CONVERT) <= lp);
+			ASSERT(dp + be32_to_cpu(ohead->oh_len) <= lp);
 			flags = ohead->oh_flags & ~XLOG_END_TRANS;
 			if (flags & XLOG_WAS_CONT_TRANS)
 				flags &= ~XLOG_CONTINUE_TRANS;
@@ -2938,8 +2938,7 @@ xlog_recover_process_data(
 				break;
 			case XLOG_WAS_CONT_TRANS:
 				error = xlog_recover_add_to_cont_trans(trans,
-						dp, INT_GET(ohead->oh_len,
-							ARCH_CONVERT));
+						dp, be32_to_cpu(ohead->oh_len));
 				break;
 			case XLOG_START_TRANS:
 				xlog_warn(
@@ -2950,8 +2949,7 @@ xlog_recover_process_data(
 			case 0:
 			case XLOG_CONTINUE_TRANS:
 				error = xlog_recover_add_to_trans(trans,
-						dp, INT_GET(ohead->oh_len,
-							ARCH_CONVERT));
+						dp, be32_to_cpu(ohead->oh_len));
 				break;
 			default:
 				xlog_warn(
@@ -2963,7 +2961,7 @@ xlog_recover_process_data(
 			if (error)
 				return error;
 		}
-		dp += INT_GET(ohead->oh_len, ARCH_CONVERT);
+		dp += be32_to_cpu(ohead->oh_len);
 		num_logops--;
 	}
 	return 0;