tree 2e82cc23da9f436bbb6fde058b3321619f990db2
parent 351810c1d2aafa288af61844d877941d516fb031
author David Sterba <dsterba@suse.cz> 1421425272 +0100
committer David Sterba <dsterba@suse.cz> 1425399837 +0100

btrfs: cleanup 64bit/32bit divs, compile time constants

Switch to div_u64 if the divisor is a numeric constant or sum of
sizeof()s. We can remove a few instances of do_div that has the hidden
semtantics of changing the 1st argument.

Small power-of-two divisors are converted to bitshifts, large values are
kept intact for clarity.

Signed-off-by: David Sterba <dsterba@suse.cz>