Hello,

quoted

Page "remapping" is a mechanism to free a specified page by copying the
page content to a newly allocated replacement page and redirecting
references to the original page to the new page.
This was designed to reliably free specified pages, unlike the swapout
code.

are you 100% sure the locking is correct wrt O_DIRECT, AIO or futexes ??

Sure, it can handle that!
And it can handle pages on RAMDISK and sysfs and so on.


Thank you,
Hirokazu Takahashi.



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