partitions/msdos: remove LINUX_SWAP_PARTITION

Just always use NEW_SOLARIS_X86_PARTITION and explain the situation,
as that is less confusing than two names for a single value.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/partitions/msdos.c

@@ -77,13 +77,19 @@ static int aix_magic_present(struct parsed_partitions *state, unsigned char *p)
 		p[2] == AIX_LABEL_MAGIC3 &&
 		p[3] == AIX_LABEL_MAGIC4))
 		return 0;
-	/* Assume the partition table is valid if Linux partitions exists */
+
+	/*
+	 * Assume the partition table is valid if Linux partitions exists.
+	 * Note that old Solaris/x86 partitions use the same indicator as
+	 * Linux swap partitions, so we consider that a Linux partition as
+	 * well.
+	 */
 	for (slot = 1; slot <= 4; slot++, pt++) {
-		if (pt->sys_ind == LINUX_SWAP_PARTITION ||
-			pt->sys_ind == LINUX_RAID_PARTITION ||
-			pt->sys_ind == LINUX_DATA_PARTITION ||
-			pt->sys_ind == LINUX_LVM_PARTITION ||
-			is_extended_partition(pt))
+		if (pt->sys_ind == SOLARIS_X86_PARTITION ||
+		    pt->sys_ind == LINUX_RAID_PARTITION ||
+		    pt->sys_ind == LINUX_DATA_PARTITION ||
+		    pt->sys_ind == LINUX_LVM_PARTITION ||
+		    is_extended_partition(pt))
 			return 0;
 	}
 	d = read_part_sector(state, 7, &sect);

include/linux/msdos_partition.h

@@ -27,12 +27,11 @@ enum msdos_sys_ind {
 	LINUX_EXTENDED_PARTITION = 0x85,
 	WIN98_EXTENDED_PARTITION = 0x0f,
 
-	LINUX_SWAP_PARTITION = 0x82,
 	LINUX_DATA_PARTITION = 0x83,
 	LINUX_LVM_PARTITION = 0x8e,
 	LINUX_RAID_PARTITION = 0xfd,	/* autodetect RAID partition */
 
-	SOLARIS_X86_PARTITION =	LINUX_SWAP_PARTITION,
+	SOLARIS_X86_PARTITION =	0x82,	/* also Linux swap partitions */
 	NEW_SOLARIS_X86_PARTITION = 0xbf,
 
 	DM6_AUX1PARTITION = 0x51,	/* no DDO:  use xlated geom */