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blkdev: flush disk cache on ->fsync
[safe/jmp/linux-2.6]
/
fs
/
block_dev.c
diff --git
a/fs/block_dev.c
b/fs/block_dev.c
index
9cf4b92
..
dde91e7
100644
(file)
--- a/
fs/block_dev.c
+++ b/
fs/block_dev.c
@@
-405,7
+405,17
@@
static loff_t block_llseek(struct file *file, loff_t offset, int origin)
static int block_fsync(struct file *filp, struct dentry *dentry, int datasync)
{
static int block_fsync(struct file *filp, struct dentry *dentry, int datasync)
{
- return sync_blockdev(I_BDEV(filp->f_mapping->host));
+ struct block_device *bdev = I_BDEV(filp->f_mapping->host);
+ int error;
+
+ error = sync_blockdev(bdev);
+ if (error)
+ return error;
+
+ error = blkdev_issue_flush(bdev, NULL);
+ if (error == -EOPNOTSUPP)
+ error = 0;
+ return error;
}
/*
}
/*