linux-kernel - [PATCH] f2fs: fix to clear PG

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Date:   Sat, 21 Mar 2020 20:24:11 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <yuchao0@...wei.com>
Subject: [PATCH] f2fs: fix to clear PG_error if fsverity failed

From: Chao Yu <yuchao0@...wei.com>

In f2fs_decompress_end_io(), we should clear PG_error flag before page
unlock, otherwise reread will fail due to the flag as described in
commit fb7d70db305a ("f2fs: clear PageError on the read path").

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/compress.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/fs/f2fs/compress.c b/fs/f2fs/compress.c
index df3e6ad5b6d7..f37b83534322 100644
--- a/fs/f2fs/compress.c
+++ b/fs/f2fs/compress.c
@@ -1420,15 +1420,17 @@ void f2fs_decompress_end_io(struct page **rpages,
 		if (!rpage)
 			continue;
 
-		if (err || PageError(rpage)) {
-			ClearPageUptodate(rpage);
-			ClearPageError(rpage);
-		} else {
-			if (!verity || fsverity_verify_page(rpage))
-				SetPageUptodate(rpage);
-			else
-				SetPageError(rpage);
+		if (err || PageError(rpage))
+			goto clear_uptodate;
+
+		if (!verity || fsverity_verify_page(rpage)) {
+			SetPageUptodate(rpage);
+			goto unlock;
 		}
+clear_uptodate:
+		ClearPageUptodate(rpage);
+		ClearPageError(rpage);
+unlock:
 		unlock_page(rpage);
 	}
 }
-- 
2.22.0