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authorJens Axboe <jens.axboe@oracle.com>2009-03-17 09:35:06 +0100
committerJens Axboe <jens.axboe@oracle.com>2009-03-26 11:01:33 +0100
commit26160158d3d3df548f4ee046cc6147fe048cfa9c (patch)
tree19affc0b08f00ac22e8881d6ec73061a8764cc5d /mm/readahead.c
parent07e86f405addc6436eb969b8279bb14a6dcacce4 (diff)
downloadlinux-rt-26160158d3d3df548f4ee046cc6147fe048cfa9c.tar.gz
Move the default_backing_dev_info out of readahead.c and into backing-dev.c
It really makes no sense to have it in readahead.c, so move it where it belongs. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm/readahead.c')
-rw-r--r--mm/readahead.c25
1 files changed, 0 insertions, 25 deletions
diff --git a/mm/readahead.c b/mm/readahead.c
index bec83c15a78f..9ce303d4b810 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -17,19 +17,6 @@
#include <linux/pagevec.h>
#include <linux/pagemap.h>
-void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
-}
-EXPORT_SYMBOL(default_unplug_io_fn);
-
-struct backing_dev_info default_backing_dev_info = {
- .ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE,
- .state = 0,
- .capabilities = BDI_CAP_MAP_COPY,
- .unplug_io_fn = default_unplug_io_fn,
-};
-EXPORT_SYMBOL_GPL(default_backing_dev_info);
-
/*
* Initialise a struct file's readahead state. Assumes that the caller has
* memset *ra to zero.
@@ -233,18 +220,6 @@ unsigned long max_sane_readahead(unsigned long nr)
+ node_page_state(numa_node_id(), NR_FREE_PAGES)) / 2);
}
-static int __init readahead_init(void)
-{
- int err;
-
- err = bdi_init(&default_backing_dev_info);
- if (!err)
- bdi_register(&default_backing_dev_info, NULL, "default");
-
- return err;
-}
-subsys_initcall(readahead_init);
-
/*
* Submit IO for the read-ahead request in file_ra_state.
*/