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Subject[34-longterm 128/196] Increase OSF partition limit from 8 to 18
Date
From: Linus Torvalds <torvalds@linux-foundation.org>

-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
If you see a problem with using this for longterm, please comment.
-------------------

commit 34d211a2d5df4984a35b18d8ccacbe1d10abb067 upstream.

It turns out that while a maximum of 8 partitions may be what people
"should" have had, you can actually fit up to 18 entries(*) in a sector.

And some people clearly were taking advantage of that, like Michael
Cree, who had ten partitions on one of his OSF disks.

(*) The OSF partition data starts at byte offset 64 in the first sector,
and the array of 16-byte partition entries start at offset 148 in
the on-disk partition structure.

Reported-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
fs/partitions/osf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/partitions/osf.c b/fs/partitions/osf.c
index 6e0825e..9ddca58 100644
--- a/fs/partitions/osf.c
+++ b/fs/partitions/osf.c
@@ -10,7 +10,7 @@
#include "check.h"
#include "osf.h"

-#define MAX_OSF_PARTITIONS 8
+#define MAX_OSF_PARTITIONS 18

int osf_partition(struct parsed_partitions *state, struct block_device *bdev)
{
--
1.7.9.3


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