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-rw-r--r--fs/fs-writeback.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 892643dc9af..c403b66ec83 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -22,8 +22,7 @@
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/buffer_head.h>
-
-extern struct super_block *blockdev_superblock;
+#include "internal.h"
/**
* __mark_inode_dirty - internal function
@@ -320,7 +319,7 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
if (!bdi_cap_writeback_dirty(bdi)) {
list_move(&inode->i_list, &sb->s_dirty);
- if (sb == blockdev_superblock) {
+ if (sb_is_blkdev_sb(sb)) {
/*
* Dirty memory-backed blockdev: the ramdisk
* driver does this. Skip just this inode
@@ -337,14 +336,14 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc)
if (wbc->nonblocking && bdi_write_congested(bdi)) {
wbc->encountered_congestion = 1;
- if (sb != blockdev_superblock)
+ if (!sb_is_blkdev_sb(sb))
break; /* Skip a congested fs */
list_move(&inode->i_list, &sb->s_dirty);
continue; /* Skip a congested blockdev */
}
if (wbc->bdi && bdi != wbc->bdi) {
- if (sb != blockdev_superblock)
+ if (!sb_is_blkdev_sb(sb))
break; /* fs has the wrong queue */
list_move(&inode->i_list, &sb->s_dirty);
continue; /* blockdev has wrong queue */