nfsd: move nfsd_fh_match to nfsfh.h

The pnfs code will need it too.  Also remove the nfsd_ prefix to match the
other filehandle helpers in that file.

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

2 files changed, 11 insertions, 10 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index e6b354a0d89e..eb0336e526d2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -398,14 +398,6 @@ static unsigned int file_hashval(struct knfsd_fh *fh)
         return nfsd_fh_hashval(fh) & (FILE_HASH_SIZE - 1);
 }
 
-static bool nfsd_fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
-{
-        return fh1->fh_size == fh2->fh_size &&
-                !memcmp(fh1->fh_base.fh_pad,
-                                fh2->fh_base.fh_pad,
-                                fh1->fh_size);
-}
-
 static struct hlist_head file_hashtbl[FILE_HASH_SIZE];
 
 static void
@@ -3295,7 +3287,7 @@ find_file_locked(struct knfsd_fh *fh, unsigned int hashval)
         struct nfs4_file *fp;
 
         hlist_for_each_entry_rcu(fp, &file_hashtbl[hashval], fi_hash) {
-                if (nfsd_fh_match(&fp->fi_fhandle, fh)) {
+                if (fh_match(&fp->fi_fhandle, fh)) {
                         if (atomic_inc_not_zero(&fp->fi_ref))
                                 return fp;
                 }
@@ -4290,7 +4282,7 @@ laundromat_main(struct work_struct *laundry)
 
 static inline __be32 nfs4_check_fh(struct svc_fh *fhp, struct nfs4_ol_stateid *stp)
 {
-        if (!nfsd_fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle))
+        if (!fh_match(&fhp->fh_handle, &stp->st_stid.sc_file->fi_fhandle))
                 return nfserr_bad_stateid;
         return nfs_ok;
 }
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index 08236d70c667..e24d95436db3 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -187,6 +187,15 @@ fh_init(struct svc_fh *fhp, int maxsize)
         return fhp;
 }
 
+static inline bool fh_match(struct knfsd_fh *fh1, struct knfsd_fh *fh2)
+{
+        if (fh1->fh_size != fh2->fh_size)
+                return false;
+        if (memcmp(fh1->fh_base.fh_pad, fh2->fh_base.fh_pad, fh1->fh_size) != 0)
+                return false;
+        return true;
+}
+
 #ifdef CONFIG_NFSD_V3
 /*
  * The wcc data stored in current_fh should be cleared