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authorChristoph Hellwig <hch@lst.de>2015-01-14 10:42:41 +0100
committerJens Axboe <axboe@fb.com>2015-01-20 14:05:38 -0700
commitdf0ce26cb4ee8bc233d50213b97213532aff0a3c (patch)
treebfc9ae26255daa5bd5d633520151223551faf016 /fs/ceph/super.c
parentc4db59d31e39ea067c32163ac961e9c80198fd37 (diff)
fs: remove default_backing_dev_info
Now that default_backing_dev_info is not used for writeback purposes we can git rid of it easily: - instead of using it's name for tracing unregistered bdi we just use "unknown" - btrfs and ceph can just assign the default read ahead window themselves like several other filesystems already do. - we can assign noop_backing_dev_info as the default one in alloc_super. All filesystems already either assigned their own or noop_backing_dev_info. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/ceph/super.c')
-rw-r--r--fs/ceph/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index e350cc1611e4..5ae62587a71d 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -899,7 +899,7 @@ static int ceph_register_bdi(struct super_block *sb,
>> PAGE_SHIFT;
else
fsc->backing_dev_info.ra_pages =
- default_backing_dev_info.ra_pages;
+ VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE;
err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld",
atomic_long_inc_return(&bdi_seq));