f2fs: clear atomic_write_task in f2fs_abort_atomic_write()

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>

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index ebfa759527ac51b461d14d88778952b316244c05..5e603b808487df6e11ea426997d6fc4010999143 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -201,9 +201,12 @@ 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;
        }
 }