On Tue, Apr 11, 2023 at 02:10:19PM +0200, Jan Kara wrote: > When we enable MMP in ext4_multi_mount_protect() during mount or > remount, we end up calling sb_start_write() from write_mmp_block(). This > triggers lockdep warning because freeze protection ranks above s_umount > semaphore we are holding during mount / remount. The problem is harmless > because we are guaranteed the filesystem is not frozen during mount / > remount but still let's fix the warning by not grabbing freeze > protection from ext4_multi_mount_protect(). > > Reported-by: syzbot+aacb82fca60873422114@xxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Jan Kara <jack@xxxxxxx> > --- Looks good to me, Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
