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authorChuck Lever2020-11-10 09:57:14 -0500
committerChuck Lever2021-03-22 10:18:55 -0400
commita161e6c76aeba835e475a2f27dbbe5c37e565e94 (patch)
tree7cceba50ef0c175dca424b5429cf783d6eeec171
parent5ef2826c761079e27904c85034df34e601b82d94 (diff)
NFSD: Add a helper that encodes NFSv3 directory offset cookies
Refactor: De-duplicate identical code that handles encoding of directory offset cookies across page boundaries. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
-rw-r--r--fs/nfsd/nfs3proc.c24
-rw-r--r--fs/nfsd/nfs3xdr.c36
-rw-r--r--fs/nfsd/xdr3.h2
3 files changed, 27 insertions, 35 deletions
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 93d196752f87..90566cd01bdc 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -495,17 +495,7 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
count += PAGE_SIZE;
}
resp->count = count >> 2;
- if (resp->offset) {
- if (unlikely(resp->offset1)) {
- /* we ended up with offset on a page boundary */
- *resp->offset = htonl(offset >> 32);
- *resp->offset1 = htonl(offset & 0xffffffff);
- resp->offset1 = NULL;
- } else {
- xdr_encode_hyper(resp->offset, offset);
- }
- resp->offset = NULL;
- }
+ nfs3svc_encode_cookie3(resp, offset);
return rpc_success;
}
@@ -560,17 +550,7 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp)
count += PAGE_SIZE;
}
resp->count = count >> 2;
- if (resp->offset) {
- if (unlikely(resp->offset1)) {
- /* we ended up with offset on a page boundary */
- *resp->offset = htonl(offset >> 32);
- *resp->offset1 = htonl(offset & 0xffffffff);
- resp->offset1 = NULL;
- } else {
- xdr_encode_hyper(resp->offset, offset);
- }
- resp->offset = NULL;
- }
+ nfs3svc_encode_cookie3(resp, offset);
out:
return rpc_success;
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index eab14b52db20..e334a1454edb 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -1219,6 +1219,28 @@ out:
return p;
}
+/**
+ * nfs3svc_encode_cookie3 - Encode a directory offset cookie
+ * @resp: readdir result context
+ * @offset: offset cookie to encode
+ *
+ */
+void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset)
+{
+ if (!resp->offset)
+ return;
+
+ if (resp->offset1) {
+ /* we ended up with offset on a page boundary */
+ *resp->offset = cpu_to_be32(offset >> 32);
+ *resp->offset1 = cpu_to_be32(offset & 0xffffffff);
+ resp->offset1 = NULL;
+ } else {
+ xdr_encode_hyper(resp->offset, offset);
+ }
+ resp->offset = NULL;
+}
+
/*
* Encode a directory entry. This one works for both normal readdir
* and readdirplus.
@@ -1244,19 +1266,7 @@ encode_entry(struct readdir_cd *ccd, const char *name, int namlen,
int elen; /* estimated entry length in words */
int num_entry_words = 0; /* actual number of words */
- if (cd->offset) {
- u64 offset64 = offset;
-
- if (unlikely(cd->offset1)) {
- /* we ended up with offset on a page boundary */
- *cd->offset = htonl(offset64 >> 32);
- *cd->offset1 = htonl(offset64 & 0xffffffff);
- cd->offset1 = NULL;
- } else {
- xdr_encode_hyper(cd->offset, offset64);
- }
- cd->offset = NULL;
- }
+ nfs3svc_encode_cookie3(cd, offset);
/*
dprintk("encode_entry(%.*s @%ld%s)\n",
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 8073350418ae..e76e9230827e 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -300,6 +300,8 @@ int nfs3svc_encode_commitres(struct svc_rqst *, __be32 *);
void nfs3svc_release_fhandle(struct svc_rqst *);
void nfs3svc_release_fhandle2(struct svc_rqst *);
+
+void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset);
int nfs3svc_encode_entry(void *, const char *name,
int namlen, loff_t offset, u64 ino,
unsigned int);