Rewind zonelists in scopes when resetting rather than clearing

Rewind zonelists in scopes when resetting rather than clearing

Clear also frees the memory, which isn't useful in the case of a zonelist. If we later want to use the list (e.g., because of aborting), that will cause additional allocations.

BUG=

Committed: https://crrev.com/a6ceec24830672d2fef78d95affa303273a29067
Cr-Commit-Position: refs/heads/master@{#39948}

[Toon Verwaest, 2016-10-04 09:14:13]

verwaest@chromium.org changed reviewers:
+ marja@chromium.org

[Toon Verwaest, 2016-10-04 09:14:13]

ptal

[marja, 2016-10-04 09:17:09]

lgtm

[Toon Verwaest, 2016-10-04 09:17:20]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2016-10-04 09:17:24]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-04 09:42:06]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-10-04 09:42:27]

Description was changed from

==========
Rewind zonelists in scopes when resetting rather than clearing

Clear also frees the memory, which isn't useful in the case of a zonelist. If we
later want to use the list (e.g., because of aborting), that will cause
additional allocations.

BUG=
==========

to

==========
Rewind zonelists in scopes when resetting rather than clearing

Clear also frees the memory, which isn't useful in the case of a zonelist. If we
later want to use the list (e.g., because of aborting), that will cause
additional allocations.

BUG=

Committed: https://crrev.com/a6ceec24830672d2fef78d95affa303273a29067
Cr-Commit-Position: refs/heads/master@{#39948}
==========

[commit-bot: I haz the power, 2016-10-04 09:42:28]

Patchset 1 (id:??) landed as
https://crrev.com/a6ceec24830672d2fef78d95affa303273a29067
Cr-Commit-Position: refs/heads/master@{#39948}