Commit 46562cec authored Sep 23, 2009 by Chris Mason

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>

parent 42daec29

fs/btrfs/extent_io.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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;