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swap_pager: pctrie_reclaim_cb in meta_free_all

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Replace the lookup-remove loop in swp_pager_meta_free_all with a call
to SWAP_PCTRIE_RECLAIM_CALLBACK, to eliminate repeated trie searches.

Reviewed by:	rlibby
Differential Revision:	https://reviews.freebsd.org/D45583
This commit is contained in:
Doug Moore 2024-06-13 13:47:54 -05:00
parent c0d0bc2bed
commit d2acf0a447
1 changed files with 6 additions and 9 deletions
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15
sys/vm/swap_pager.c
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@ -2220,8 +2220,11 @@ swp_pager_meta_free(vm_object_t object, vm_pindex_t pindex, vm_pindex_t count,
}
static void
swp_pager_meta_free_block(struct swblk *sb, struct page_range *range)
swp_pager_meta_free_block(void *sbv, void *rangev)
{
struct swblk *sb = sbv;
struct page_range *range = rangev;
for (int i = 0; i < SWAP_META_PAGES; i++) {
if (sb->d[i] != SWAPBLK_NONE)
swp_pager_update_freerange(range, sb->d[i]);
@ -2238,19 +2241,13 @@ swp_pager_meta_free_block(struct swblk *sb, struct page_range *range)
static void
swp_pager_meta_free_all(vm_object_t object)
{
struct swblk *sb;
struct page_range range;
vm_pindex_t pindex;
VM_OBJECT_ASSERT_WLOCKED(object);
swp_pager_init_freerange(&range);
for (pindex = 0; (sb = SWAP_PCTRIE_LOOKUP_GE(
&object->un_pager.swp.swp_blks, pindex)) != NULL;) {
pindex = sb->p + SWAP_META_PAGES;
SWAP_PCTRIE_REMOVE(&object->un_pager.swp.swp_blks, sb->p);
swp_pager_meta_free_block(sb, &range);
}
SWAP_PCTRIE_RECLAIM_CALLBACK(&object->un_pager.swp.swp_blks,
swp_pager_meta_free_block, &range);
swp_pager_freeswapspace(&range);
}