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-rw-r--r--mm/backing-dev.c19
-rw-r--r--mm/filemap.c6
2 files changed, 22 insertions, 3 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index efe237742074..8fde443f36d7 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -825,6 +825,20 @@ int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev)
}
EXPORT_SYMBOL(bdi_register_dev);
+int bdi_register_owner(struct backing_dev_info *bdi, struct device *owner)
+{
+ int rc;
+
+ rc = bdi_register(bdi, NULL, "%u:%u", MAJOR(owner->devt),
+ MINOR(owner->devt));
+ if (rc)
+ return rc;
+ bdi->owner = owner;
+ get_device(owner);
+ return 0;
+}
+EXPORT_SYMBOL(bdi_register_owner);
+
/*
* Remove bdi from bdi_list, and ensure that it is no longer visible
*/
@@ -849,6 +863,11 @@ void bdi_unregister(struct backing_dev_info *bdi)
device_unregister(bdi->dev);
bdi->dev = NULL;
}
+
+ if (bdi->owner) {
+ put_device(bdi->owner);
+ bdi->owner = NULL;
+ }
}
void bdi_exit(struct backing_dev_info *bdi)
diff --git a/mm/filemap.c b/mm/filemap.c
index 3083ded98b15..daef091d4c50 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -887,9 +887,9 @@ EXPORT_SYMBOL(end_page_writeback);
* After completing I/O on a page, call this routine to update the page
* flags appropriately
*/
-void page_endio(struct page *page, int rw, int err)
+void page_endio(struct page *page, int op, int err)
{
- if (rw == READ) {
+ if (!op_is_write(op)) {
if (!err) {
SetPageUptodate(page);
} else {
@@ -897,7 +897,7 @@ void page_endio(struct page *page, int rw, int err)
SetPageError(page);
}
unlock_page(page);
- } else { /* rw == WRITE */
+ } else {
if (err) {
SetPageError(page);
if (page->mapping)