X-Git-Url: https://git.wh0rd.org/?a=blobdiff_plain;f=src%2Ffccache.c;h=a6b532fa118c148c7eb80b49bf362941e2f79da4;hb=144ca878311af885db820a35db31563ba87ee6ad;hp=42c70821748819cd7dbcdd932aed2c1884d24907;hpb=db6f19f13b1719617c54a1658b8faa31da56e1d4;p=fontconfig.git

diff --git a/src/fccache.c b/src/fccache.c
index 42c7082..a6b532f 100644
--- a/src/fccache.c
+++ b/src/fccache.c
@@ -454,7 +454,8 @@ FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat)
     if (cache)
 	return cache;
     /*
-     * For small cache files, just read them into memory
+     * Lage cache files are mmap'ed, smaller cache files are read. This
+     * balances the system cost of mmap against per-process memory usage.
      */
     if (fd_stat->st_size >= FC_CACHE_MIN_MMAP)
     {