Detailed revision comments:

r6123 | jyang | 2009-10-30 05:43:06 +0200 (Fri, 30 Oct 2009) | 8 lines
branches/5.1: In os_mem_alloc_large(), if we fail to attach
the shared memory, reset memory pointer ptr to NULL, and
allocate memory from conventional pool. This is a port
from branches/zip.
Bug #48237 Error handling in os_mem_alloc_large appears to be incorrect
rb://198  Approved by: Marko