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Date: Fri, 26 Mar 2010 16:37:42 +0000
From: "Jan Beulich" <JBeulich@...ell.com>
To: <yinghai@...nel.org>, <hpa@...or.com>
Cc: <teheo@...e.de>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] free_early_partial() should permit start == end
The per-CPU allocator, when using atom_size == PAGE_SIZE, may call
free_area_init_partial() this way.
Signed-off-by: Jan Beulich <jbeulich@...ell.com>
---
kernel/early_res.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- linux-2.6.34-rc2/kernel/early_res.c 2010-03-25 15:23:45.000000000 +0100
+++ 2.6.34-rc2-free_early_partial-zero-size/kernel/early_res.c 2010-03-26 14:49:41.000000000 +0100
@@ -335,10 +335,10 @@ void __init free_early_partial(u64 start
try_next:
i = find_overlapped_early(start, end);
- if (i >= max_early_res)
+ r = &early_res[i];
+ if (i >= max_early_res || !r->end)
return;
- r = &early_res[i];
/* hole ? */
if (r->end >= end && r->start <= start) {
drop_range_partial(i, start, end);
--
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