f2fs: clear atomic_write_task in f2fs_abort_atomic_write()

[ Upstream commit a2665a1af8c3a29829d6474e674d71710858a4b2 ]

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: 0e0c433c381f ("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 60d79e427f9887df788420d1979ec9df4e4306b3..63c68940997999ecc8b11b6e5279ccce5b0981ae 100644 (file)
--- 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;
        }
 }