tree 59b5af0dc55b58fc8b4c0ce68507b3ee5afb687b
parent 93ada579b0eea06f808aef08ead64bb230fb7851
author Piotr Kwapulinski <kwapulinski.piotr@gmail.com> 1435190319 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1435193385 -0700

mm/mmap.c: optimization of do_mmap_pgoff function

The simple check for zero length memory mapping may be performed
earlier.  So that in case of zero length memory mapping some unnecessary
code is not executed at all.  It does not make the code less readable
and saves some CPU cycles.

Signed-off-by: Piotr Kwapulinski <kwapulinski.piotr@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>