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Author SHA1 Message Date
David Sterba
f8c269d722 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>
 2015-03-03 17:23:57 +01:00
Miao Xie
3fed40cc97 Btrfs: cleanup duplicated division functions 
div_factor{_fine} has been implemented for two times, cleanup it.
And I move them into a independent file named math.h because they are
common math functions.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
 2012-12-11 13:31:30 -05:00