os/bluestore/BlueFS: preallocate larger write buffer

Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/os/bluestore/BlueFS.h b/src/os/bluestore/BlueFS.h
index f9754306e5008e97d07a9299eefa2f76e793d6d3..a18b3732bcf4e98b355ce531122c71aa7208385f 100644 (file)
--- a/src/os/bluestore/BlueFS.h
+++ b/src/os/bluestore/BlueFS.h
@@ -130,7 +130,8 @@ public:
     FileWriter(FileRef f)
       : file(f),
        pos(0),
-       buffer_appender(buffer.get_page_aligned_appender()) {
+       buffer_appender(buffer.get_page_aligned_appender(
+                         g_conf->bluefs_alloc_size / CEPH_PAGE_SIZE)) {
       ++file->num_writers;
       iocv.fill(nullptr);
     }