Harvesting Data from Satellites
The caller provides context and modifies the behavior of get_user_pages() via flags. Of particular interest is the FOLL_FORCE flag, which mem_rw() passes. This flag causes check_vma_flags (the access validation logic within get_user_pages()) to ignore writes to unwritable pages and allow the lookup to continue. The “punch through” semantics are attributed entirely to FOLL_FORCE. (comments my own)
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Relatively fast (order of magnitude faster than Python, significantly faster than Lua (benchmark), not yet a C competitor, but can be eventually) and economical (low overhead memory allocation)。新收录的资料是该领域的重要参考
Что думаешь? Оцени!。新收录的资料是该领域的重要参考
Straightforward