[PATCH -next] mm/truncate.c: fix build for CONFIG_BLOCK not enabled

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxx>

Fix build error when CONFIG_BLOCK is not enabled by providing a stub
inode_dio_wait() function.

mm/truncate.c:612: error: implicit declaration of function 'inode_dio_wait'

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxx>
---
 include/linux/fs.h |    4 ++++
 1 file changed, 4 insertions(+)

--- linux-next-20110721.orig/include/linux/fs.h
+++ linux-next-20110721/include/linux/fs.h
@@ -2418,6 +2418,10 @@ static inline ssize_t blockdev_direct_IO
 				    offset, nr_segs, get_block, NULL, NULL,
 				    DIO_LOCKING | DIO_SKIP_HOLES);
 }
+#else
+static inline void inode_dio_wait(struct inode *inode)
+{
+}
 #endif
 
 extern const struct file_operations generic_ro_fops;
--
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