Xiangfei Jia wrote:
I'm writing a kernel module. Most of the time, when I insert the
module into the kernel, I got the error messgage from the kernel saying:
__alloc_pages: 0-order allocation failed (gfp=0x20/0)
I think the error message says that there is not a single page to be
used for allocation. BUT, my module doesn't use a lot memory. I
checked the message usage after inserting the module, there are still
more free memory available. I'm quite confused what causes the
problem. Can I get some help to figure out the problem??
Perhaps you are requesting a page from a heavily-used zone?
Please include your code, or no one will be able to help you.
-- JK
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