[PATCH 13/19] NFSv4: Don't request atime/mtime/size if they are delegated to us

[trondmy@xxxxxxxxx]

From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>

Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Lance Shelton <lance.shelton@xxxxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
 fs/nfs/nfs4proc.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index b0c1564a7bc7..512268c732a1 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -310,6 +310,18 @@ static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src,
 		dst[1] &= ~FATTR4_WORD1_MODE;
 	if (!(cache_validity & NFS_INO_INVALID_OTHER))
 		dst[1] &= ~(FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP);
+
+	if (nfs_have_delegated_mtime(inode)) {
+		if (!(cache_validity & NFS_INO_INVALID_ATIME))
+			dst[1] &= ~FATTR4_WORD1_TIME_ACCESS;
+		if (!(cache_validity & NFS_INO_INVALID_MTIME))
+			dst[1] &= ~FATTR4_WORD1_TIME_MODIFY;
+		if (!(cache_validity & NFS_INO_INVALID_CTIME))
+			dst[1] &= ~FATTR4_WORD1_TIME_METADATA;
+	} else if (nfs_have_delegated_atime(inode)) {
+		if (!(cache_validity & NFS_INO_INVALID_ATIME))
+			dst[1] &= ~FATTR4_WORD1_TIME_ACCESS;
+	}
 }
 
 static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
@@ -3414,7 +3426,8 @@ static int nfs4_do_setattr(struct inode *inode, const struct cred *cred,
 		.inode = inode,
 		.stateid = &arg.stateid,
 	};
-	unsigned long adjust_flags = NFS_INO_INVALID_CHANGE;
+	unsigned long adjust_flags = NFS_INO_INVALID_CHANGE |
+				     NFS_INO_INVALID_CTIME;
 	int err;
 
 	if (sattr->ia_valid & (ATTR_MODE | ATTR_KILL_SUID | ATTR_KILL_SGID))
@@ -4958,7 +4971,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct
 
 	nfs4_inode_make_writeable(inode);
 	nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, res.fattr->label), inode,
-				NFS_INO_INVALID_CHANGE);
+				NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME);
 	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	if (!status) {
 		nfs4_update_changeattr(dir, &res.cinfo, res.fattr->time_start,
-- 
2.45.2