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authorYehuda Sadeh <yehuda@hq.newdream.net>2011-07-22 18:12:28 (GMT)
committerSage Weil <sage@newdream.net>2011-07-26 18:29:14 (GMT)
commite9852227431a0ed6ceda064f33e4218757acab6c (patch)
treee48c6a6ffb96780d562943dfc45c78a0a7edc0cd
parent79e3057c4c9d32b88e6745fd220d91b0a8b2030b (diff)
ceph: set up readahead size when rsize is not passed
This should improve the default read performance, as without it readahead is practically disabled. Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
-rw-r--r--fs/ceph/super.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index d4757c9..d47c5ec 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -779,6 +779,10 @@ static int ceph_register_bdi(struct super_block *sb,
fsc->backing_dev_info.ra_pages =
(fsc->mount_options->rsize + PAGE_CACHE_SIZE - 1)
>> PAGE_SHIFT;
+ else
+ fsc->backing_dev_info.ra_pages =
+ default_backing_dev_info.ra_pages;
+
err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%d",
atomic_long_inc_return(&bdi_seq));
if (!err)

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