The patch titled
Subject: mm: nobootmem: fix sign extend problem in __free_pages_memory()
has been added to the -mm tree. Its filename is
mm-nobootmem-fix-sign-extend-problem-in-__free_pages_memory.patch
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From: Russ Anderson <rja@xxxxxxx>
Subject: mm: nobootmem: fix sign extend problem in __free_pages_memory()
Systems with 8 TBytes of memory or greater can hit a problem where only
the the first 8 TB of memory shows up. This is due to "int i" being
smaller than "unsigned long start_aligned", causing the high bits to be
dropped.
The fix is to change `i' to unsigned long to match start_aligned
and end_aligned.
Thanks to Jack Steiner (steiner@xxxxxxx) for assistance tracking
this down.
Signed-off-by: Russ Anderson <rja@xxxxxxx>
Cc: Jack Steiner <steiner@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/nobootmem.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff -puN mm/nobootmem.c~mm-nobootmem-fix-sign-extend-problem-in-__free_pages_memory mm/nobootmem.c
--- a/mm/nobootmem.c~mm-nobootmem-fix-sign-extend-problem-in-__free_pages_memory
+++ a/mm/nobootmem.c
@@ -82,8 +82,7 @@ void __init free_bootmem_late(unsigned l
static void __init __free_pages_memory(unsigned long start, unsigned long end)
{
- int i;
- unsigned long start_aligned, end_aligned;
+ unsigned long i, start_aligned, end_aligned;
int order = ilog2(BITS_PER_LONG);
start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1);
_
Subject: Subject: mm: nobootmem: fix sign extend problem in __free_pages_memory()
Patches currently in -mm which might be from rja@xxxxxxx are
mm-nobootmem-fix-sign-extend-problem-in-__free_pages_memory.patch
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