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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-26 12:45:41 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-26 12:45:41 -0800
commit2437dcbf555bff04e4ee8b8dba4587f946c1cd3d (patch)
treef04f3ed779c25caa933744d2d5965ca4e297f05d /mm
parent0dbfe8ddaaab9fe5bc8672c064d3ede6cd66201a (diff)
parentb64b223aed5f8aeeb6c046f1b050a8f976b87de0 (diff)
downloadlinux-2437dcbf555bff04e4ee8b8dba4587f946c1cd3d.tar.gz
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rcu: Add missing __cpuinit annotation in rcutorture code sched: Add "const" to is_idle_task() parameter rcu: Make rcutorture bool parameters really bool (core code) memblock: Fix alloc failure due to dumb underflow protection in memblock_find_in_range_node()
Diffstat (limited to 'mm')
-rw-r--r--mm/memblock.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/memblock.c b/mm/memblock.c
index 2f55f19b7c8..77b5f227e1d 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -106,14 +106,17 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start,
if (end == MEMBLOCK_ALLOC_ACCESSIBLE)
end = memblock.current_limit;
- /* adjust @start to avoid underflow and allocating the first page */
- start = max3(start, size, (phys_addr_t)PAGE_SIZE);
+ /* avoid allocating the first page */
+ start = max_t(phys_addr_t, start, PAGE_SIZE);
end = max(start, end);
for_each_free_mem_range_reverse(i, nid, &this_start, &this_end, NULL) {
this_start = clamp(this_start, start, end);
this_end = clamp(this_end, start, end);
+ if (this_end < size)
+ continue;
+
cand = round_down(this_end - size, align);
if (cand >= this_start)
return cand;