GNU C Library master sources branch master updated. glibc-2.22-626-g7962541

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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=7962541a32eff5597bc4207e781cfac8d1bb0d87

commit 7962541a32eff5597bc4207e781cfac8d1bb0d87
Author: Florian Weimer <fweimer@redhat.com>
Date:   Wed Dec 23 17:23:33 2015 +0100

    malloc: Update comment for list_lock

diff --git a/ChangeLog b/ChangeLog
index a32717e..9063848 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2015-12-23  Florian Weimer  <fweimer@redhat.com>
+
+	* malloc/arena.c (list_lock): Update comment.
+
 2015-12-22  Carlos Eduardo Seo  <cseo@linux.vnet.ibm.com>
 
 	* sysdeps/powerpc/hwcapinfo.c: Export symbol
diff --git a/malloc/arena.c b/malloc/arena.c
index 85f1194..665be5e 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). */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog      |    4 ++++
 malloc/arena.c |    7 ++++---
 2 files changed, 8 insertions(+), 3 deletions(-)


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