Btrfs: do not defrag a file partially
xfstests 218 complains that btrfs defrags a file partially: After: 1 Write backwards sync, but contiguous - should defrag to 1 extent Before: 10 -After: 1 +After: 2 To fix this, we need to set max_to_defrag count properly. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -1066,7 +1066,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file,
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i = range->start >> PAGE_CACHE_SHIFT;
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i = range->start >> PAGE_CACHE_SHIFT;
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}
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}
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if (!max_to_defrag)
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if (!max_to_defrag)
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max_to_defrag = last_index;
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max_to_defrag = last_index + 1;
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/*
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/*
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* make writeback starts from i, so the defrag range can be
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* make writeback starts from i, so the defrag range can be
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