summaryrefslogtreecommitdiff
path: root/mm/backing-dev.c
diff options
context:
space:
mode:
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/backing-dev.c
parent07e86f405addc6436eb969b8279bb14a6dcacce4 (diff)
downloadconfigs-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/backing-dev.c')
-rw-r--r--mm/backing-dev.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 8e858744413..be68c956a66 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -2,11 +2,24 @@
#include <linux/wait.h>
#include <linux/backing-dev.h>
#include <linux/fs.h>
+#include <linux/pagemap.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/writeback.h>
#include <linux/device.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);
static struct class *bdi_class;
@@ -166,9 +179,20 @@ static __init int bdi_class_init(void)
bdi_debug_init();
return 0;
}
-
postcore_initcall(bdi_class_init);
+static int __init default_bdi_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(default_bdi_init);
+
int bdi_register(struct backing_dev_info *bdi, struct device *parent,
const char *fmt, ...)
{