From: Christoph Hellwig <hch@lst.de>
Date: Wed, 13 Aug 2014 18:56:13 +0000 (+0200)
Subject: nfsd: add fh_fsid_match helper
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9558f2500a2028ffc05cfd8fceaa0fe0a0a3804e;p=linux-beck.git

nfsd: add fh_fsid_match helper

Add a helper to check that the fsid parts of two file handles match.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index e24d95436db3..84cae2079d21 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -196,6 +196,15 @@ static inline bool fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
 	return true;
 }
 
+static inline bool fh_fsid_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
+{
+	if (fh1->fh_fsid_type != fh2->fh_fsid_type)
+		return false;
+	if (memcmp(fh1->fh_fsid, fh2->fh_fsid, key_len(fh1->fh_fsid_type) != 0))
+		return false;
+	return true;
+}
+
 #ifdef CONFIG_NFSD_V3
 /*
  * The wcc data stored in current_fh should be cleared