Btrfs: Fix test_range_bit for whole file extents
If test_range_bit finds an extent that goes all the way to (u64)-1, it can incorrectly wrap the u64 instead of treaing it like the end of the address space. This just adds a check for the highest possible offset so we don't wrap. Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -1564,6 +1564,10 @@ int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
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bitset = 0;
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break;
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}
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if (state->end == (u64)-1)
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break;
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start = state->end + 1;
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if (start > end)
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break;
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