linux-kernel - Re: [PATCH v2] f2fs: allow to read node block after shutdown

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Message-ID: <Y2sMWrKXJtGSmUz7@google.com>
Date:   Tue, 8 Nov 2022 18:11:38 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH v2] f2fs: allow to read node block after shutdown

If block address is still alive, we should give a valid node block even after
shutdown. Otherwise, we can see zero data when reading out a file.

Cc: stable@...r.kernel.org
Fixes: 83a3bfdb5a8 ("f2fs: indicate shutdown f2fs to allow unmount successfully")
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---

 - Cc: stable

 fs/f2fs/node.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 983572f23896..b9ee5a1176a0 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1360,8 +1360,7 @@ static int read_node_page(struct page *page, blk_opf_t op_flags)
 		return err;
 
 	/* NEW_ADDR can be seen, after cp_error drops some dirty node pages */
-	if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR) ||
-			is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)) {
+	if (unlikely(ni.blk_addr == NULL_ADDR || ni.blk_addr == NEW_ADDR)) {
 		ClearPageUptodate(page);
 		return -ENOENT;
 	}
-- 
2.38.1.431.g37b22c650d-goog