From b9148c6b80d802dbc2a7530b29915a80432e50c7 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Mon, 12 Nov 2007 12:16:58 -0500 Subject: NFS: Ensure we return zero if applications attempt to write zero bytes A zero byte count direct write request should be a successful no-op, not an error. Signed-off-by: Chuck Lever Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/nfs/direct.c') diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 88d5d1c7f987..4d726e9db295 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -890,6 +890,8 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const struct iovec *iov, retval = generic_write_checks(file, &pos, &count, 0); if (retval) goto out; + if (!count) + goto out; /* return 0 */ retval = -EINVAL; if ((ssize_t) count < 0) -- cgit v1.2.3