Use a bitmap to record PageMemoryRegion usage.

Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515
Committed: https://crrev.com/648b0ff04620c688b1d8926b06220f45da3e4598
Cr-Commit-Position: refs/heads/master@{#378449}

[sof, 2016-03-01 15:32:10]

sigbjornf@opera.com changed reviewers:
+ oilpan-reviews@chromium.org

[sof, 2016-03-01 15:32:11]

please take a look.

[haraken, 2016-03-01 15:36:36]

LGTM

[sof, 2016-03-01 15:53:25]

Description was changed from

==========
Use a bitmap to record PageMemoryRegion usage.

R=
BUG=420515
==========

to

==========
Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515
==========

[sof, 2016-03-01 15:53:38]

The CQ bit was checked by sigbjornf@opera.com

[commit-bot: I haz the power, 2016-03-01 15:54:15]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1748363005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1748363005/1

[commit-bot: I haz the power, 2016-03-01 16:28:50]

Description was changed from

==========
Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515
==========

to

==========
Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515
==========

[commit-bot: I haz the power, 2016-03-01 16:28:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-03-01 16:31:02]

Description was changed from

==========
Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515
==========

to

==========
Use a bitmap to record PageMemoryRegion usage.

R=haraken
BUG=420515

Committed: https://crrev.com/648b0ff04620c688b1d8926b06220f45da3e4598
Cr-Commit-Position: refs/heads/master@{#378449}
==========

[commit-bot: I haz the power, 2016-03-01 16:31:03]

Patchset 1 (id:??) landed as
https://crrev.com/648b0ff04620c688b1d8926b06220f45da3e4598
Cr-Commit-Position: refs/heads/master@{#378449}

[sof, 2016-03-02 16:03:26]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1749103005/ by sigbjornf@opera.com.

The reason for reverting is: Using a bitmap is problematic as pages within a
region may belong to different threads (see https://crbug.com/591217 ).

Revert back to previous and use a separate bool per thread to avoid overlap..