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-rw-r--r--fs/nfs/client.c10
-rw-r--r--fs/nfs/super.c2
-rw-r--r--mm/page-writeback.c11
3 files changed, 17 insertions, 6 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index e350bd6a233..a7ce15d3c24 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -933,10 +933,6 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str
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 @@ static struct nfs_server *nfs_alloc_server(void)
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 de935692d40..f1cc0587cfe 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2190,8 +2190,8 @@ static void nfs_kill_super(struct super_block *s)
{
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 1eea4fa0d41..d1ba4644105 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -485,6 +485,7 @@ static void balance_dirty_pages(struct address_space *mapping)
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 @@ static void balance_dirty_pages(struct address_space *mapping)
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 &&