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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 /mm/backing-dev.c
parentc4db59d31e39ea067c32163ac961e9c80198fd37 (diff)
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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 'mm/backing-dev.c')
-rw-r--r--mm/backing-dev.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 1725adb242e0..7690ec77c722 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -14,12 +14,6 @@
static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
-struct backing_dev_info default_backing_dev_info = {
- .name = "default",
- .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
-};
-EXPORT_SYMBOL_GPL(default_backing_dev_info);
-
struct backing_dev_info noop_backing_dev_info = {
.name = "noop",
.capabilities = BDI_CAP_NO_ACCT_AND_WRITEBACK,
@@ -250,9 +244,6 @@ static int __init default_bdi_init(void)
if (!bdi_wq)
return -ENOMEM;
- err = bdi_init(&default_backing_dev_info);
- if (!err)
- bdi_register(&default_backing_dev_info, NULL, "default");
err = bdi_init(&noop_backing_dev_info);
return err;