nfsd: rename MAY_ flags

Rename nfsd_permission() specific MAY_* flags to NFSD_MAY_* to make it
clear, that these are not used outside nfsd, and to avoid name and
number space conflicts with the VFS.

[comment from hch: rename MAY_READ, MAY_WRITE and MAY_EXEC as well]

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index c721a1e..4d617ea 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -63,7 +63,7 @@
 		SVCFH_fmt(&argp->fh));
 
 	fh_copy(&resp->fh, &argp->fh);
-	nfserr = fh_verify(rqstp, &resp->fh, 0, MAY_NOP);
+	nfserr = fh_verify(rqstp, &resp->fh, 0, NFSD_MAY_NOP);
 	if (nfserr)
 		RETURN_STATUS(nfserr);
 
@@ -242,7 +242,7 @@
 	attr   = &argp->attrs;
 
 	/* Get the directory inode */
-	nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, MAY_CREATE);
+	nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE);
 	if (nfserr)
 		RETURN_STATUS(nfserr);
 
@@ -558,7 +558,7 @@
 	resp->f_maxfilesize = ~(u32) 0;
 	resp->f_properties = NFS3_FSF_DEFAULT;
 
-	nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
+	nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
 
 	/* Check special features of the file system. May request
 	 * different read/write sizes for file systems known to have
@@ -597,7 +597,7 @@
 	resp->p_case_insensitive = 0;
 	resp->p_case_preserving = 1;
 
-	nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
+	nfserr = fh_verify(rqstp, &argp->fh, 0, NFSD_MAY_NOP);
 
 	if (nfserr == 0) {
 		struct super_block *sb = argp->fh.fh_dentry->d_inode->i_sb;