From: Tal Zussman <tz2294@columbia.edu>
Date: Mon, 7 Sep 2026 20:19:58 +0000 (-0400)
Subject: btrfs: convert btrfs_compr_pool_scan() to use folios
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=027ffac059fd06eb20900c5a296e96485aa90e2f;p=linux

btrfs: convert btrfs_compr_pool_scan() to use folios

The compression pool holds order-0 folios, but btrfs_compr_pool_scan()
walks it as struct page through page->lru. Walk it as folios, matching
the other compression pool functions. This removes the last use of
page->lru in btrfs and saves a call to compound_head() per freed
folio.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index c62b5148d5ac1..979b2ffbd8fc7 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -168,10 +168,10 @@ static unsigned long btrfs_compr_pool_scan(struct shrinker *sh, struct shrink_co
 	spin_unlock(&compr_pool.lock);
 
 	list_for_each_safe(tmp, next, &remove) {
-		struct page *page = list_entry(tmp, struct page, lru);
+		struct folio *folio = list_entry(tmp, struct folio, lru);
 
-		ASSERT(page_ref_count(page) == 1);
-		put_page(page);
+		ASSERT(folio_ref_count(folio) == 1);
+		folio_put(folio);
 	}
 
 	return freed;