kernel/git/stable/linux.git/fs/btrfs/math.h, branch linux-5.3.y

btrfs: replace GPL boilerplate by SPDX -- headers

2018-04-12T14:29:46+00:00

Remove GPL boilerplate text (long, short, one-line) and keep the rest, ie. personal, company or original source copyright statements. Add the SPDX header. Unify the include protection macros to match the file names. Signed-off-by: David Sterba

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

2015-03-03T16:23:57+00:00

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

Btrfs: cleanup duplicated division functions

2012-12-11T18:31:30+00:00

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 Signed-off-by: Chris Mason