FileJournal: Don't cache journal data if journal w/o directio mode

Only read journal data in osd starting.So no need to keep journal data in kernel cache/buffer. Signed-off-by: Jianpeng Ma <[email protected]>
zz2 · Dec 26, 2014 · 45fb9a3 · 45fb9a3
1 parent 3e6195b
commit 45fb9a3
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/os/FileJournal.cc b/src/os/FileJournal.cc
@@ -1077,6 +1077,10 @@ void FileJournal::do_write(bufferlist& bl)
     ::fsync(fd);
 #else
     ::fdatasync(fd);
+#endif
+#ifdef HAVE_POSIX_FADVISE
+    if (g_conf->filestore_fadvise)
+      posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED);
 #endif
   }