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md: wakeup thread upon rdev_dec_pending()
After each call to rdev_dec_pending() we should wakeup the md thread if the device is found to be faulty. Otherwise we'll incur heavy delays on failing devices. Signed-off-by: Neil Brown <nfbrown@suse.de> Signed-off-by: Hannes Reinecke <hare@suse.de>
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@ -474,13 +474,6 @@ static inline int mddev_trylock(struct mddev *mddev)
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}
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extern void mddev_unlock(struct mddev *mddev);
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static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
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{
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int faulty = test_bit(Faulty, &rdev->flags);
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if (atomic_dec_and_test(&rdev->nr_pending) && faulty)
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set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
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}
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static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
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{
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atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
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@ -666,4 +659,14 @@ static inline int mddev_check_plugged(struct mddev *mddev)
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return !!blk_check_plugged(md_unplug, mddev,
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sizeof(struct blk_plug_cb));
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}
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static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
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{
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int faulty = test_bit(Faulty, &rdev->flags);
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if (atomic_dec_and_test(&rdev->nr_pending) && faulty) {
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set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
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md_wakeup_thread(mddev->thread);
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}
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}
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#endif /* _MD_MD_H */
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