From: Florian Weimer Date: Wed, 23 Dec 2015 16:23:33 +0000 (+0100) Subject: malloc: Update comment for list_lock X-Git-Tag: glibc-2.23~101 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7962541a32eff5597bc4207e781cfac8d1bb0d87;p=thirdparty%2Fglibc.git malloc: Update comment for list_lock --- diff --git a/ChangeLog b/ChangeLog index a32717ea056..9063848e27d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2015-12-23 Florian Weimer + + * malloc/arena.c (list_lock): Update comment. + 2015-12-22 Carlos Eduardo Seo * sysdeps/powerpc/hwcapinfo.c: Export symbol diff --git a/malloc/arena.c b/malloc/arena.c index 85f119474b7..665be5ec358 100644 --- a/malloc/arena.c +++ b/malloc/arena.c @@ -85,9 +85,10 @@ static mstate free_list; _int_new_arena. This suffers from data races; see the FIXME comments in _int_new_arena and reused_arena. - list_lock also prevents concurrent forks. When list_lock is - acquired, no arena lock must be acquired, but it is permitted to - acquire arena locks after list_lock. */ + list_lock also prevents concurrent forks. At the time list_lock is + acquired, no arena lock must have been acquired, but it is + permitted to acquire arena locks subsequently, while list_lock is + acquired. */ static mutex_t list_lock = _LIBC_LOCK_INITIALIZER; /* Mapped memory in non-main arenas (reliable only for NO_THREADS). */