From: Christoph Hellwig <hch@lst.de>
Date: Fri, 10 Feb 2023 07:48:40 +0000 (+0100)
Subject: btrfs: don't clear page->mapping in btrfs_free_compressed_pages
X-Git-Tag: v6.4-rc1~141^2~122
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=a959a1745d333fbce1e21895ac6d833a77213112;p=linux-2.6-block.git

btrfs: don't clear page->mapping in btrfs_free_compressed_pages

No one ever set ->mapping on these pages, so don't bother clearing it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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 5f64a775f1fd..6a23d6cc29aa 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -161,12 +161,8 @@ static int compression_decompress(int type, struct list_head *ws,
 
 static void btrfs_free_compressed_pages(struct compressed_bio *cb)
 {
-	for (unsigned int i = 0; i < cb->nr_pages; i++) {
-		struct page *page = cb->compressed_pages[i];
-
-		page->mapping = NULL;
-		put_page(page);
-	}
+	for (unsigned int i = 0; i < cb->nr_pages; i++)
+		put_page(cb->compressed_pages[i]);
 	kfree(cb->compressed_pages);
 }