• Brian Foster's avatar
    xfs: remove unnecessary dirty bli format check for ordered bufs · 6453c65d
    Brian Foster authored
    xfs_buf_item_unlock() historically checked the dirty state of the
    buffer by manually checking the buffer log formats for dirty
    segments. The introduction of ordered buffers invalidated this check
    because ordered buffers have dirty bli's but no dirty (logged)
    segments. The check was updated to accommodate ordered buffers by
    looking at the bli state first and considering the blf only if the
    bli is clean.
    
    This logic is safe but unnecessary. There is no valid case where the
    bli is clean yet the blf has dirty segments. The bli is set dirty
    whenever the blf is logged (via xfs_trans_log_buf()) and the blf is
    cleared in the only place BLI_DIRTY is cleared (xfs_trans_binval()).
    
    Remove the conditional blf dirty checks and replace with an assert
    that should catch any discrepencies between bli and blf dirty
    states. Refactor the old blf dirty check into a helper function to
    be used by the assert.
    Signed-off-by: 's avatarBrian Foster <bfoster@redhat.com>
    Reviewed-by: 's avatarDarrick J. Wong <darrick.wong@oracle.com>
    Signed-off-by: 's avatarDarrick J. Wong <darrick.wong@oracle.com>
    6453c65d