Function report |
Source Code:mm\frontswap.c |
Create Date:2022-07-28 15:21:36 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Frontswap, like a true swap device, may unnecessarily retain pages* under certain circumstances; "shrink" frontswap is essentially a* "partial swapoff" and works by calling try_to_unuse to attempt to* unuse enough frontswap pages to attempt to -- subject
Proto:void frontswap_shrink(unsigned long target_pages)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
unsigned long | target_pages |
448 | pages_to_unuse = 0 |
457 | ret = Used to check if it's necessory and feasible to unuse pages.* Return 1 when nothing to do, 0 when need to shink pages,* error code when there is an error. |
458 | spin_unlock( & swap_lock) |
459 | If ret == 0 Then If the boolean frontswap is true, only unuse pages_to_unuse pages;* pages_to_unuse==0 means all pages; ignored if frontswap is false |
461 | Return |
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