[rtems commit] posix: Use unprotected chain operations

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    b965f461a8d2627fafb0166ed4ef0351ad597551
Changeset: http://git.rtems.org/rtems/commit/?id=b965f461a8d2627fafb0166ed4ef0351ad597551

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Thu Jul 20 07:25:55 2017 +0200

posix: Use unprotected chain operations

Operarations are already protected by mmap_mappings_lock.

Updates #2859.

---

 cpukit/posix/src/mmap.c   | 2 +-
 cpukit/posix/src/munmap.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpukit/posix/src/mmap.c b/cpukit/posix/src/mmap.c
index e53cafa..ae68901 100644
--- a/cpukit/posix/src/mmap.c
+++ b/cpukit/posix/src/mmap.c
@@ -371,7 +371,7 @@ void *mmap(
     rtems_libio_increment_mapping_refcnt(iop);
   }
 
-  rtems_chain_append( &mmap_mappings, &mapping->node );
+  rtems_chain_append_unprotected( &mmap_mappings, &mapping->node );
 
   mmap_mappings_lock_release( );
 
diff --git a/cpukit/posix/src/munmap.c b/cpukit/posix/src/munmap.c
index 2d812ae..6bd79cc 100644
--- a/cpukit/posix/src/munmap.c
+++ b/cpukit/posix/src/munmap.c
@@ -63,7 +63,7 @@ int munmap(void *addr, size_t len)
     mapping = (mmap_mapping*) node;
     if ( ( addr >= mapping->addr ) &&
          ( addr < ( mapping->addr + mapping->len )) ) {
-      rtems_chain_extract( node );
+      rtems_chain_extract_unprotected( node );
       /* FIXME: generally need a way to clean-up the backing object, but
        * currently it only matters for MAP_SHARED shm objects. */
       if ( mapping->is_shared_shm == true ) {