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-rw-r--r--fs/block_dev.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 335c38bb86eb..0c361ea7e5a6 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1315,3 +1315,24 @@ void close_bdev_excl(struct block_device *bdev)
}
EXPORT_SYMBOL(close_bdev_excl);
+
+int __invalidate_device(struct block_device *bdev)
+{
+ struct super_block *sb = get_super(bdev);
+ int res = 0;
+
+ if (sb) {
+ /*
+ * no need to lock the super, get_super holds the
+ * read mutex so the filesystem cannot go away
+ * under us (->put_super runs with the write lock
+ * hold).
+ */
+ shrink_dcache_sb(sb);
+ res = invalidate_inodes(sb);
+ drop_super(sb);
+ }
+ invalidate_bdev(bdev, 0);
+ return res;
+}
+EXPORT_SYMBOL(__invalidate_device);