diff options
Diffstat (limited to 'src/stats.c')
| -rw-r--r-- | src/stats.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/stats.c b/src/stats.c index 929e09bf..679a372e 100644 --- a/src/stats.c +++ b/src/stats.c @@ -286,6 +286,12 @@ static int stats_file_remap(struct stats_file *file, size_t size) } if (file->addr == NULL) { + /* + * Though the buffer is not shared between processes, we still + * have to take MAP_SHARED because MAP_PRIVATE does not guarantee + * that writes will hit the file eventually. For more details + * please read the mmap man pages. + */ addr = mmap(NULL, new_size, PROT_READ | PROT_WRITE, MAP_SHARED, file->fd, 0); } else { |