commit f37dff724b4dd4a9d2bd2b77ae89f19fa3e7b544
author Nikita Ioffe <ioffe@google.com> Mon Oct 28 09:55:34 2019 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Mon Oct 28 09:55:34 2019 +0000
tree fbb27dd0b6075f9f9417cc3bb275f87898b8ef39
parent be4ff998ac34900f1f2f0a8663dfcc931e8cf7ac
parent e1fd48999b06dc401526222b00b10a0e935f0dfa

Merge "Rename ENFORCE_UID to ENFORCE_SYSTEM_OR_ROOT"

secdiscard.cpp

diff --git a/secdiscard.cpp b/secdiscard.cpp
index 0ff05d6..4659eed 100644
--- a/secdiscard.cpp
+++ b/secdiscard.cpp
@@ -147,6 +147,10 @@
             if (!overwrite_with_zeros(fs_fd.get(), range[0], range[1])) return false;
         }
     }
+    // Should wait for overwrites completion. Otherwise after unlink(),
+    // filesystem can allocate these blocks and IO can be reordered, resulting
+    // in making zero blocks to filesystem blocks.
+    fsync(fs_fd.get());
     return true;
 }