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Commit fb3229d5 authored by Shaohua Li's avatar Shaohua Li
Browse files

md/raid5: output stripe state for debug 



Neil recently fixed an obscure race in break_stripe_batch_list. Debug would be
quite convenient if we know the stripe state. This is what this patch does.

Signed-off-by: default avatarShaohua Li <shli@fb.com>
parent 550da24f

drivers/md/raid5.c

+6 −4
Original line number Diff line number Diff line
@@ -4236,7 +4236,7 @@ static void break_stripe_batch_list(struct stripe_head *head_sh, 


		list_del_init(&sh->batch_list);



		WARN_ON_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |

		WARN_ONCE(sh->state & ((1 << STRIPE_ACTIVE) |

					  (1 << STRIPE_SYNCING) |

					  (1 << STRIPE_REPLACED) |

					  (1 << STRIPE_DELAYED) |
@@ -4248,9 +4248,11 @@ static void break_stripe_batch_list(struct stripe_head *head_sh, 
					  (1 << STRIPE_DISCARD) |

					  (1 << STRIPE_BATCH_READY) |

					  (1 << STRIPE_BATCH_ERR) |

					  (1 << STRIPE_BITMAP_PENDING)));

		WARN_ON_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) |

					      (1 << STRIPE_REPLACED)));

					  (1 << STRIPE_BITMAP_PENDING)),

			"stripe state: %lx\n", sh->state);

		WARN_ONCE(head_sh->state & ((1 << STRIPE_DISCARD) |

					      (1 << STRIPE_REPLACED)),

			"head stripe state: %lx\n", head_sh->state);



		set_mask_bits(&sh->state, ~(STRIPE_EXPAND_SYNC_FLAGS |

					    (1 << STRIPE_PREREAD_ACTIVE) |