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v0.5.1
https://github.com/torvalds/linux
02 December 2023, 22:23:51 UTC
Revision 92d567740f2ab5937b2c23bee94ea4b284bb1f98 authored by George Spelvin on 27 May 2016, 02:22:01 UTC, committed by George Spelvin on 28 May 2016, 19:42:51 UTC 
Change hash_64() return value to 32 bits
 
That's all that's ever asked for, and it makes the return
type of hash_long() consistent.

It also allows (upcoming patch) an optimized implementation
of hash_64 on 32-bit machines.

I tried adding a BUILD_BUG_ON to ensure the number of bits requested
was never more than 32 (most callers use a compile-time constant), but
adding <linux/bug.h> to <linux/hash.h> breaks the tools/perf compiler
unless tools/perf/MANIFEST is updated, and understanding that code base
well enough to update it is too much trouble.  I did the rest of an
allyesconfig build with such a check, and nothing tripped.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
1 parent 917ea16
History
Tip revision: 92d567740f2ab5937b2c23bee94ea4b284bb1f98 authored by George Spelvin on 27 May 2016, 02:22:01 UTC
Change hash_64() return value to 32 bits
Tip revision: 92d5677
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