ext4: fix for fiemap last-block test

Carl Henrik Lunde reported and debugged this; the test for the
last allocated block was comparing bytes to blocks in this test:

	if (logical + length - 1 == EXT_MAX_BLOCK ||
	    ext4_ext_next_allocated_block(path) == EXT_MAX_BLOCK)
		flags |= FIEMAP_EXTENT_LAST;

so any extent which ended right at 4G was stopping the extent
walk.  Just replacing these values with the extent block &
length should fix it.

Also give blksize_bits a saner type, and reverse the order 
of the tests to make the more likely case tested first.

Signed-off-by: Eric Sandeen <[email protected]>
Reported-by: Carl Henrik Lunde <[email protected]>
Tested-by: Carl Henrik Lunde <[email protected]>
Signed-off-by: "Theodore Ts'o" <[email protected]>

0 files changed, 0 insertions, 0 deletions