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lib: bitmap: eliminate branch in __bitmap_shift_left
authorRasmus Villemoes <linux@rasmusvillemoes.dk>
Fri, 13 Feb 2015 22:36:16 +0000 (14:36 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 14 Feb 2015 05:21:35 +0000 (21:21 -0800)
commitdf7254610d0d16e1fc9441a2be33e911565aa398
tree444d682c304f39d2071ad1445ec0582abf5e46a6tree | snapshot
parentc9e855880718dba746dbecdbc1cf6029ce38f6adcommit | diff
lib: bitmap: eliminate branch in __bitmap_shift_left

We can shift the bits from lower and upper into place before assembling
dst[k + off]; moving the shift of lower into the branch where we already
know that rem is non-zero allows us to remove a conditional.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
lib/bitmap.c diff | blob | history
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