Function report |
Source Code:mm\page_isolation.c |
Create Date:2022-07-28 16:24:54 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:start_isolate_page_range() - make page-allocation-type of range of pages to* be MIGRATE_ISOLATE.*@start_pfn: The lower PFN of the range to be isolated.*@end_pfn: The upper PFN of the range to be isolated.
Proto:int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, unsigned migratetype, int flags)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned long | start_pfn | |
unsigned long | end_pfn | |
unsigned | migratetype | |
int | flags |
200 | nr_isolate_pageblock = 0 |
202 | BUG_ON(!IS_ALIGNED(start_pfn, pageblock_nr_pages)) |
203 | BUG_ON(!IS_ALIGNED(end_pfn, pageblock_nr_pages)) |
208 | page = __first_valid_page(pfn, pageblock_nr_pages) |
209 | If page Then |
210 | If set_migratetype_isolate(page, migratetype, flags) Then |
214 | nr_isolate_pageblock++ |
217 | Return nr_isolate_pageblock |
218 | undo : |
223 | If Not page Then Continue |
228 | Return -EBUSY |
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