linux-kernel - fix 2.4.33.3 / sun partition size

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Message-ID: <DA6197CAE190A847B662079EF7631C06015692C2@OEKAW2EXVS03.hbi.ad.harman.com>
Date:	Tue, 12 Sep 2006 13:23:56 +0200
From:	"Jurzitza, Dieter" <DJurzitza@...manbecker.com>
To:	<linux-kernel@...r.kernel.org>
Cc:	"Jeff Mahoney" <jeffm@...e.com>, <sparclinux@...r.kernel.org>
Subject: fix 2.4.33.3 / sun partition size

Kernel: 2.4.33

Issue: really fix size display for sun partitions larger than 1TByte

Signed off by: Dieter Jurzitza DJurzitza@...manBecker.com

Problem: the last fix introduced by Jeff Mahoney for kernel 2.6 was not complete for kernel 2.4 (as applied)
I found out that add_gd_partition is called by any type of partition (2.4). add_gd_partition is defined as add_gd_partition (int, int), what makes no sense to me as negative numbers should never occur here. As long as add_gd_partition is not changed to add_gd_partition (unsigned, unsigned), /proc/partitions will keep showing negative numbers.

If ever someone could look into this, within the different partition type files in linux/fs/partitions the parameters to add_gd_partitions seem to be chosen arbitrarily between int, unsigned and unsigned long, whatever seemed to be appropriate, I think it would make sense to get consistent parameters to add_gd_partition from all partition types here.
Especially if one takes into account that sizeof (long) and sizeof (int) may differ significantly i. e. on sparc.

Take care

Dieter Jurzitza

--- linux/fs/partitions/sun.c   2002-11-29 00:53:15.000000000 +0100
+++ linux/fs/partitions/sun.c   2006-08-29 07:04:56.000000000 +0200
@@ -86,7 +86,7 @@
        spc = be16_to_cpu(label->ntrks) * be16_to_cpu(label->nsect);
        for (i = 0; i < 8; i++, p++) {
                unsigned long st_sector;
-               int num_sectors;
+               unsigned int num_sectors;

                st_sector = first_sector + be32_to_cpu(p->start_cylinder) * spc;
                num_sectors = be32_to_cpu(p->num_sectors);
--- linux/fs/partitions/check.c 2006-08-31 19:03:20.000000000 +0200
+++ linux/fs/partitions/check.c 2006-09-03 12:47:55.000000000 +0200
@@ -204,7 +204,7 @@
 /*
  * Add a partitions details to the devices partition description.
  */
-void add_gd_partition(struct gendisk *hd, int minor, int start, int size)
+void add_gd_partition(struct gendisk *hd, int minor, unsigned int start, unsign
ed int size)
 {
 #ifndef CONFIG_DEVFS_FS
        char buf[40];
--- linux/fs/partitions/check.h 2006-08-31 19:03:20.000000000 +0200
+++ linux/fs/partitions/check.h 2006-09-03 12:48:54.000000000 +0200
@@ -2,7 +2,7 @@
  * add_partition adds a partitions details to the devices partition
  * description.
  */
-void add_gd_partition(struct gendisk *hd, int minor, int start, int size);
+void add_gd_partition(struct gendisk *hd, int minor, unsigned int start, unsign
ed int size);

 typedef struct {struct page *v;} Sector;

-- 
________________________________________________

HARMAN BECKER AUTOMOTIVE SYSTEMS

Dr.-Ing. Dieter Jurzitza
Manager Hardware Systems
   System Development

Industriegebiet Ittersbach
Becker-Göring Str. 16
D-76307 Karlsbad / Germany

Phone: +49 (0)7248 71-1577
Fax:   +49 (0)7248 71-1216
eMail: DJurzitza@...manbecker.com
Internet: http://www.becker.de

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