[Qemu-devel] [PATCH] mmap.c: Reuse unmapped memory areas.

[Edgar E. Iglesias]

Try to rewind mmap_next_start when unmapping memory. Simple tests in 
test-mmap.c now pass.

Best regards
-- 
Edgar E. Iglesias
Axis Communications AB

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 6292826..78a8162 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -385,6 +385,9 @@ int target_munmap(abi_ulong start, abi_ulong len)
             real_end -= qemu_host_page_size;
     }
 
+    if (start < mmap_next_start)
+       mmap_next_start = start;
+
     /* unmap what we can */
     if (real_start < real_end) {
         ret = munmap(g2h(real_start), real_end - real_start);