commit c56ecad17200341be24bc07af6cf3623bba4f83b
author Jaegeuk Kim <jaegeuk@kernel.org> Thu Apr 21 16:47:02 2022 -0700
committer Jaegeuk Kim <jaegeuk@google.com> Mon Apr 25 23:09:59 2022 +0000
tree 10f3d2944e36a05a23e61c82930524e9bed6906a
parent a50ef731e098167b1e8ab4abac2144bb0ef5a292

UPSTREAM: f2fs: should not truncate blocks during roll-forward recovery

If the file preallocated blocks and fsync'ed, we should not truncate them during
roll-forward recovery which will recover i_size correctly back.

Bug: 223740163
Fixes: d4dd19ec1ea0 ("f2fs: do not expose unwritten blocks to user by DIO")
Cc: <stable@vger.kernel.org> # 5.17+
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 4d8ec91208196e0e19195f1e7d6be9de5873f242)
Change-Id: I5e974a564667115455b53a18f31902a875d86dee

fs/f2fs/inode.c

diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index ad5fde3..5fffc22 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -550,7 +550,8 @@
 	}
 	f2fs_set_inode_flags(inode);
 
-	if (file_should_truncate(inode)) {
+	if (file_should_truncate(inode) &&
+			!is_sbi_flag_set(sbi, SBI_POR_DOING)) {
 		ret = f2fs_truncate(inode);
 		if (ret)
 			goto bad_inode;