From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Thu, 31 Dec 2020 22:04:18 +0000 (+0000)
Subject: fix mm-filemap-add-mapping_seek_hole_data.patch
X-Git-Tag: howlett/maple_spf/20210104~139
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=4b28862f19f662d027d9638c253979946ddd54cc;p=users%2Fjedix%2Flinux-maple.git

fix mm-filemap-add-mapping_seek_hole_data.patch

Link: https://lkml.kernel.org/r/20201124041507.28996-4-willy@infradead.org

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/filemap.c b/mm/filemap.c
index b8390e87e6cd..7ea37c95d7bc 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2654,7 +2654,8 @@ loff_t mapping_seek_hole_data(struct address_space *mapping, loff_t start,
 		if (page_seek_match(page, seek_data))
 			goto unlock;
 		start = pos + seek_page_size(&xas, page);
-		put_page(page);
+		if (!xa_is_value(page))
+			put_page(page);
 	}
 	rcu_read_unlock();