md: skip all metadata update processing when using external metadata.
All the metadata update processing for external metadata is on in user-space or through the sysfs interfaces, so make "md_update_sb" a no-op in that case. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds
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6a51830e14
commit
8377bc8080
@@ -1652,6 +1652,8 @@ static void md_update_sb(mddev_t * mddev, int force_change)
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int sync_req;
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int sync_req;
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int nospares = 0;
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int nospares = 0;
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if (mddev->external)
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return;
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repeat:
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repeat:
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spin_lock_irq(&mddev->write_lock);
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spin_lock_irq(&mddev->write_lock);
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