Commit e9852227 authored by Yehuda Sadeh's avatar Yehuda Sadeh Committed by Sage Weil
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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: default avatarYehuda Sadeh <yehuda@hq.newdream.net>
parent 79e3057c

fs/ceph/super.c

+4 −0
Original line number Diff line number Diff line
@@ -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)