Todd Lipcon has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/9128 )

Change subject: env: properly use fdatasync on Linux
......................................................................

env: properly use fdatasync on Linux

A previous commit attempted to make env OSX-compatible by checking
whether fdatasync was defined and using fsync in the case that it was
not. However, that commit was buggy since it used #ifndef. fdatasync is
never a preprocessor macro, so it never was "defined" and we always
ended up using fsync regardless of the FLAGS_env_use_fsync value.

Change-Id: I366df37670ec241cbee6dcfe0efa56af7189e9a2
Reviewed-on: http://gerrit.cloudera.org:8080/9128
Reviewed-by: Dan Burkert <[email protected]>
Tested-by: Kudu Jenkins
---
M src/kudu/util/env_posix.cc
1 file changed, 2 insertions(+), 6 deletions(-)

Approvals:
  Dan Burkert: Looks good to me, approved
  Kudu Jenkins: Verified

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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I366df37670ec241cbee6dcfe0efa56af7189e9a2
Gerrit-Change-Number: 9128
Gerrit-PatchSet: 3
Gerrit-Owner: Todd Lipcon <[email protected]>
Gerrit-Reviewer: Dan Burkert <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Tidy Bot
Gerrit-Reviewer: Todd Lipcon <[email protected]>

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