From: Chao Yu <chao@kernel.org>
Date: Mon, 9 Jan 2023 03:44:50 +0000 (+0800)
Subject: f2fs: clear atomic_write_task in f2fs_abort_atomic_write()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0b65ff13f943a9372f782cf75451c78d435e4388;p=users%2Fjedix%2Flinux-maple.git

f2fs: clear atomic_write_task in f2fs_abort_atomic_write()

[ Upstream commit 0e8d040bfa4c476d7d2a23119527c744c7de13cd ]

Otherwise, last .atomic_write_task will be remained in structure
f2fs_inode_info, resulting in aborting atomic_write accidentally
in race case. Meanwhile, clear original_i_size as well.

Fixes: 7a10f0177e11 ("f2fs: don't give partially written atomic data from process crash")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 60d79e427f988..63c6894099799 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -200,9 +200,12 @@ void f2fs_abort_atomic_write(struct inode *inode, bool clean)
 	clear_inode_flag(inode, FI_ATOMIC_FILE);
 	stat_dec_atomic_inode(inode);
 
+	F2FS_I(inode)->atomic_write_task = NULL;
+
 	if (clean) {
 		truncate_inode_pages_final(inode->i_mapping);
 		f2fs_i_size_write(inode, fi->original_i_size);
+		fi->original_i_size = 0;
 	}
 }