tree c702d8aa8cefdf6548c51df5c40da5bed46d258b
parent 58aa5ccd7675e5c960b045e96fdf69845d6449b4
author Olivier Houchard <ohouchard@haproxy.com> 1518105813 +0000
committer Willy Tarreau <w@1wt.eu> 1518107046 +0100
encoding latin1

BUG/MINOR: fd/threads: properly lock the FD before adding it to the fd cache.

It was believed that it was useless to lock the "prev" field when adding a
FD. However, if there's only one element in the FD cache, and that element
removes itself from the fd cache, and another FD is added before the first
add completed, there's a risk of losing elements. To prevent that, lock the
"prev" field, so that such a removal will wait until the add completed.