tree 97369efba436c00bf9805affee4a79f6337f6227
parent f77ca89d60503178a298d438dcdfb8373fb70492
author Olivier Houchard <cognet@ci0.org> 1580575042 +0100
committer Willy Tarreau <w@1wt.eu> 1580820048 +0100
encoding latin1

BUG/MEDIUM: memory_pool: Update the seq number in pool_flush().

In pool_flush(), we can't just set the free_list to NULL, or we may suffer
the ABA problem. Instead, use a double-width CAS and update the sequence
number.

This should be backported to 2.1, 2.0 and 1.9.
This may, or may not, be related to github issue #476.

(cherry picked from commit b6fa08bc7bca48e0098b555e3c433e0969f46d4c)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit df37a5c8478984f201c046ed183a3ce67bcbe687)
Signed-off-by: Willy Tarreau <w@1wt.eu>