Commit a6d61b6b authored by Andrew Morton's avatar Andrew Morton Committed by Trond Myklebust

[PATCH] return the correct thing from direct-io

If direct-io encounters an error, it currently returns that error even if it
performed some I/O.

Change it so that if there is an error and we read or wrote something, return
the number of bytes written/read.  Only return the error code if zero bytes
were written/read.
parent 90c4bb05
......@@ -837,10 +837,8 @@ direct_io_worker(int rw, struct inode *inode, const struct iovec *iov,
ret = ret2;
if (ret == 0)
ret = dio.page_errors;
if (ret == 0)
ret = tot_bytes;
return ret;
return tot_bytes ? tot_bytes : ret;
}
/*
......
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