Hi Andrew, On 01/10/2013 06:49 AM, Andrew Morton wrote:
On Wed, 9 Jan 2013 17:32:28 +0800 Tang Chen<tangchen@xxxxxxxxxxxxxx> wrote:When (hot)adding memory into system, /sys/firmware/memmap/X/{end, start, type} sysfs files are created. But there is no code to remove these files. The patch implements the function to remove them. Note: The code does not free firmware_map_entry which is allocated by bootmem. So the patch makes memory leak. But I think the memory leak size is very samll. And it does not affect the system.Well that's bad. Can we remember the address of that memory and then reuse the storage if/when the memory is re-added? That at least puts an upper bound on the leak.
I think we can do this. I'll post a new patch to do so. Thanks. :)
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