Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block
* 'writeback' of git://git.kernel.dk/linux-2.6-block:
nfs: initialize the backing_dev_info when creating the server
writeback: make balance_dirty_pages() gradually back more off
writeback: don't use schedule_timeout() without setting runstate
nfs: nfs_kill_super() should call bdi_unregister() after killing super
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index e350bd6..a7ce15d 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -933,10 +933,6 @@
goto out_error;
nfs_server_set_fsinfo(server, &fsinfo);
- error = bdi_init(&server->backing_dev_info);
- if (error)
- goto out_error;
-
/* Get some general file system info */
if (server->namelen == 0) {
@@ -995,6 +991,12 @@
return NULL;
}
+ if (bdi_init(&server->backing_dev_info)) {
+ nfs_free_iostats(server->io_stats);
+ kfree(server);
+ return NULL;
+ }
+
return server;
}
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index de93569..f1cc058 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2190,8 +2190,8 @@
{
struct nfs_server *server = NFS_SB(s);
- bdi_unregister(&server->backing_dev_info);
kill_anon_super(s);
+ bdi_unregister(&server->backing_dev_info);
nfs_fscache_release_super_cookie(s);
nfs_free_server(server);
}
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 1eea4fa..d1ba464 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -485,6 +485,7 @@
unsigned long bdi_thresh;
unsigned long pages_written = 0;
unsigned long write_chunk = sync_writeback_pages();
+ unsigned long pause = 1;
struct backing_dev_info *bdi = mapping->backing_dev_info;
@@ -561,7 +562,15 @@
if (pages_written >= write_chunk)
break; /* We've done our duty */
- schedule_timeout(1);
+ schedule_timeout_interruptible(pause);
+
+ /*
+ * Increase the delay for each loop, up to our previous
+ * default of taking a 100ms nap.
+ */
+ pause <<= 1;
+ if (pause > HZ / 10)
+ pause = HZ / 10;
}
if (bdi_nr_reclaimable + bdi_nr_writeback < bdi_thresh &&