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authorTejun Heo <tj@kernel.org>2012-02-29 05:56:21 +0900
committerIngo Molnar <mingo@elte.hu>2012-03-01 10:53:18 +0100
commit847854f5988a04fe7e02d2fdd4fa0df9f96360fe (patch)
treec1c1e4de2f0221b63d359961e54d2977d90b9536 /kernel
parent88ebdda6159ffc15699f204c33feb3e431bf9bdc (diff)
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op-kernel-dev-847854f5988a04fe7e02d2fdd4fa0df9f96360fe.tar.gz
memblock: Fix size aligning of memblock_alloc_base_nid()
memblock allocator aligns @size to @align to reduce the amount of fragmentation. Commit: 7bd0b0f0da ("memblock: Reimplement memblock allocation using reverse free area iterator") Broke it by incorrectly relocating @size aligning to memblock_find_in_range_node(). As the aligned size is not propagated back to memblock_alloc_base_nid(), the actually reserved size isn't aligned. While this increases memory use for memblock reserved array, this shouldn't cause any critical failure; however, it seems that the size aligning was hiding a use-beyond-allocation bug in sparc64 and losing the aligning causes boot failure. The underlying problem is currently being debugged but this is a proper fix in itself, it's already pretty late in -rc cycle for boot failures and reverting the change for debugging isn't difficult. Restore the size aligning moving it to memblock_alloc_base_nid(). Reported-by: Meelis Roos <mroos@linux.ee> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: David S. Miller <davem@davemloft.net> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20120228205621.GC3252@dhcp-172-17-108-109.mtv.corp.google.com Signed-off-by: Ingo Molnar <mingo@elte.hu> LKML-Reference: <alpine.SOC.1.00.1202130942030.1488@math.ut.ee>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions
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