From: Michal Schmidt <mschmidt@redhat.com>
Date: Fri, 12 Dec 2014 16:57:22 +0000 (+0100)
Subject: journal: add debug mode for mmap-cache (--enable-debug=mmap-cache)
X-Git-Tag: v219~1006
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=fad5a6c66e73d3df20846906121d52159e1f6bf4;hp=fad5a6c66e73d3df20846906121d52159e1f6bf4;p=elogind.git

journal: add debug mode for mmap-cache (--enable-debug=mmap-cache)

This is useful for exposing unsafe access to mmapped objects after
the context that they were mapped in was already moved.

For example:
journal_file_move_to_object(f1, OBJECT_DATA, p1, &o1);
journal_file_move_to_object(f2, OBJECT_DATA, p2, &o2);
t = o1->object.type; /* this usually works, but is unsafe */
---