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(parent: 8387ff2) | patch
fs/dcache.c: Save one 32-bit multiply in dcache lookup
authorGeorge Spelvin <linux@sciencehorizons.net>
Fri, 10 Jun 2016 04:22:12 +0000 (00:22 -0400)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 11 Jun 2016 21:57:56 +0000 (14:57 -0700)
commit703b5faf22fbddf984a361e6555f3a03fdba63d9
tree6bcfde71273dc055ba28abedd8305d6a829639f5tree | snapshot
parent8387ff2577eb9ed245df9a39947f66976c6bcd02commit | diff
fs/dcache.c: Save one 32-bit multiply in dcache lookup

Noe that we're mixing in the parent pointer earlier, we
don't need to use hash_32() to mix its bits.  Instead, we can
just take the msbits of the hash value directly.

For those applications which use the partial_name_hash(),
move the multiply to end_name_hash.

Signed-off-by: George Spelvin <linux@sciencehorizons.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/dcache.c diff | blob | history
include/linux/stringhash.h diff | blob | history
Domain: System / Kernel;