ftruncate an overlayfs inode was wrongly freeze protecting the overlay file system instead of the backing file system. Use file_start_write() instead of sb_start_write(), which does the right thing and will also freeze protect both overlay and backing fs when the time comes. Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx> --- fs/open.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/open.c b/fs/open.c index 949cef2..53b1b33 100644 --- a/fs/open.c +++ b/fs/open.c @@ -196,13 +196,13 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small) if (IS_APPEND(inode)) goto out_putf; - sb_start_write(inode->i_sb); + file_start_write(f.file); error = locks_verify_truncate(inode, f.file, length); if (!error) error = security_path_truncate(&f.file->f_path); if (!error) error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file); - sb_end_write(inode->i_sb); + file_end_write(f.file); out_putf: fdput(f); out: -- 2.7.4
