Function report |
Source Code:mm\page_alloc.c |
Create Date:2022-07-28 15:04:55 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:split_page takes a non-compound higher-order page, and splits it into* n (1<<order) sub-pages: page[0..n]* Each sub-page must be freed individually.* Note: this is probably too low level an operation for use in drivers.
Proto:void split_page(struct page *page, unsigned int order)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct page * | page | |
unsigned int | order |
3118 | VM_BUG_ON_PAGE(PageCompound(page), page) |
3119 | VM_BUG_ON_PAGE(!page_count(page), page) |
3121 | When i < 1 << order cycle Turn a non-refcounted page (->_refcount == 0) into refcounted with* a count of one. |
3123 | split_page_owner(page, order) |
Name | Describe |
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make_alloc_exact | |
split_map_pages |
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