Need to update last_slot when unprovisioned_bytes && discard.

Need to update last_slot when unprovisioned_bytes && discard.

last_slot points the last node of PartitionFreelistEntry freelist.
However, when truncating slots, the freelist is reordered.
So last_slot calculated previously is not valid.

BUG=

Review-Url: https://codereview.chromium.org/2921283002
Cr-Commit-Position: refs/heads/master@{#478222}
Committed: https://chromium.googlesource.com/chromium/src/+/9de3fa20ec0b7a98321b1cb045d7ba5414e8e0e9

[tasak, 2017-06-05 11:22:15]

The CQ bit was checked by tasak@google.com to run a CQ dry run

[commit-bot: I haz the power, 2017-06-05 11:22:22]

Dry run: CQ is trying da patch.

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

[tasak, 2017-06-05 11:47:47]

tasak@google.com changed reviewers:
+ haraken@chromium.org

[tasak, 2017-06-05 11:47:47]

Would you review this CL?

I need this CL to test the flag: base::PartitionPurgeDiscardUnusedSystemPages.

[commit-bot: I haz the power, 2017-06-05 12:04:49]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-06-05 12:04:50]

Dry run: Try jobs failed on following builders:
  linux_chromium_chromeos_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[haraken, 2017-06-05 12:23:22]

LGTM

[tasak, 2017-06-07 08:56:54]

The CQ bit was checked by tasak@google.com to run a CQ dry run

[commit-bot: I haz the power, 2017-06-07 08:57:03]

Dry run: 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, 2017-06-07 09:01:07]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-06-07 09:01:08]

Dry run: Try jobs failed on following builders:
  ios-device-xcode-clang on master.tryserver.chromium.mac (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.mac/builders/ios-device-xcode-...)

[tasak, 2017-06-09 05:54:45]

The CQ bit was checked by tasak@google.com

[tasak, 2017-06-09 05:54:45]

The patchset sent to the CQ was uploaded after l-g-t-m from haraken@chromium.org
Link to the patchset: https://codereview.chromium.org/2921283002/#ps20001
(title: "Fixed PartitionAllocTest.PurgeDiscardable failure")

[commit-bot: I haz the power, 2017-06-09 05:54:57]

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, 2017-06-09 07:20:43]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1496987685149710,
"parent_rev": "5c60ac3e0a44116f5876fc462c7be4884ecbf8d9", "commit_rev":
"9de3fa20ec0b7a98321b1cb045d7ba5414e8e0e9"}

[commit-bot: I haz the power, 2017-06-09 07:20:56]

Description was changed from

==========
Need to update last_slot when unprovisioned_bytes && discard.

last_slot points the last node of PartitionFreelistEntry freelist.
However, when truncating slots, the freelist is reordered.
So last_slot calculated previously is not valid.

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

to

==========
Need to update last_slot when unprovisioned_bytes && discard.

last_slot points the last node of PartitionFreelistEntry freelist.
However, when truncating slots, the freelist is reordered.
So last_slot calculated previously is not valid.

BUG=

Review-Url: https://codereview.chromium.org/2921283002
Cr-Commit-Position: refs/heads/master@{#478222}
Committed:
https://chromium.googlesource.com/chromium/src/+/9de3fa20ec0b7a98321b1cb045d7...
==========

[commit-bot: I haz the power, 2017-06-09 07:20:58]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/9de3fa20ec0b7a98321b1cb045d7...