[PATCH 1/4] erofs: fix setting up pcluster for temporary pages

[Gao Xiang]

From: Gao Xiang <hsiang...@redhat.com>

pcluster should be only set up for all managed pages instead of
temporary pages. Since it currently uses page->mapping to identify,
the impact is minor for now.

Fixes: 5ddcee1f3a1c ("erofs: get rid of __stagingpage_alloc helper")
Cc: <sta...@vger.kernel.org> # 5.5+
Signed-off-by: Gao Xiang <hsiang...@redhat.com>
---
 fs/erofs/zdata.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 50912a5420b4..86fd3bf62af6 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1078,8 +1078,11 @@ static struct page *pickup_page_for_submission(struct 
z_erofs_pcluster *pcl,
                cond_resched();
                goto repeat;
        }
-       set_page_private(page, (unsigned long)pcl);
-       SetPagePrivate(page);
+
+       if (tocache) {
+               set_page_private(page, (unsigned long)pcl);
+               SetPagePrivate(page);
+       }
 out:   /* the only exit (for tracing and debugging) */
        return page;
 }
-- 
2.24.0