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>
This commit is contained in:
Chris Mason 2009-09-23 20:23:16 -04:00
parent 42daec299b
commit 46562cec98

View File

@ -1564,6 +1564,10 @@ int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
bitset = 0;
break;
}
if (state->end == (u64)-1)
break;
start = state->end + 1;
if (start > end)
break;