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swap_pager: add new page range struct

Authored by dougm on Jun 11 2024, 6:02 PM.
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Define a page_range struct to pair up the two values passed to
freerange functions. Have swp_pager_freeswapspace also take a
page_range argument rather than a pair of arguments.

In swp_pager_meta_free_all, drop a needless test and use a new
helper function to do the cleanup for each swap block.

I expect the new helper function to be essential for a future change
to swp_pager_meta_free_all, as a callback function.

Test Plan

I've built and booted a kernel with this change.

Diff Detail

rG FreeBSD src repository
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Event Timeline

dougm requested review of this revision.Jun 11 2024, 6:02 PM
dougm created this revision.
This revision is now accepted and ready to land.Jun 12 2024, 3:48 AM
This revision was automatically updated to reflect the committed changes.