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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-09-02 22:46:31 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-10-04 00:02:51 +0300
commit2c3f6194b008b23e52a8e135bdd56b67fdaa55ca (patch)
tree3f47c47b2fe2a50563a8f45d563bdae2af5383a3 /mm/swapfile.c
parent000085b9af9f3ca13dd672a753f815ac0cb45d0a (diff)
downloadlinux-2c3f6194b008b23e52a8e135bdd56b67fdaa55ca.tar.xz
swapfile: convert __try_to_reclaim_swap() to use a folio
Saves five calls to compound_head(). Link: https://lkml.kernel.org/r/20220902194653.1739778-36-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/swapfile.c')
-rw-r--r--mm/swapfile.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 23cdbe8e47cf..e3e1bd3d20b1 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -132,27 +132,27 @@ static int __try_to_reclaim_swap(struct swap_info_struct *si,
unsigned long offset, unsigned long flags)
{
swp_entry_t entry = swp_entry(si->type, offset);
- struct page *page;
+ struct folio *folio;
int ret = 0;
- page = find_get_page(swap_address_space(entry), offset);
- if (!page)
+ folio = filemap_get_folio(swap_address_space(entry), offset);
+ if (!folio)
return 0;
/*
* When this function is called from scan_swap_map_slots() and it's
- * called by vmscan.c at reclaiming pages. So, we hold a lock on a page,
+ * called by vmscan.c at reclaiming folios. So we hold a folio lock
* here. We have to use trylock for avoiding deadlock. This is a special
- * case and you should use try_to_free_swap() with explicit lock_page()
+ * case and you should use folio_free_swap() with explicit folio_lock()
* in usual operations.
*/
- if (trylock_page(page)) {
+ if (folio_trylock(folio)) {
if ((flags & TTRS_ANYWAY) ||
- ((flags & TTRS_UNMAPPED) && !page_mapped(page)) ||
- ((flags & TTRS_FULL) && mem_cgroup_swap_full(page)))
- ret = try_to_free_swap(page);
- unlock_page(page);
+ ((flags & TTRS_UNMAPPED) && !folio_mapped(folio)) ||
+ ((flags & TTRS_FULL) && mem_cgroup_swap_full(&folio->page)))
+ ret = folio_free_swap(folio);
+ folio_unlock(folio);
}
- put_page(page);
+ folio_put(folio);
return ret;
}