diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index 350fa55a1bf79878f9f390a3883998ce7cf198a4..9731d0d891e7e030e3d4c4c692d2ce653d4b8029 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -50,6 +50,7 @@
 					      * root mountable
 					      */
 #define CIFS_MOUNT_UID_FROM_ACL 0x2000000 /* try to get UID via special SID */
+#define CIFS_MOUNT_NO_HANDLE_CACHE 0x4000000 /* disable caching dir handles */
 
 struct cifs_sb_info {
 	struct rb_root tlink_tree;
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 5a5a0158cc8f5085cda312d25c10b21e49bd8d1d..62f166270459afad7fc4743995edcef570a6b963 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -495,6 +495,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
 		seq_puts(s, ",sfu");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
 		seq_puts(s, ",nobrl");
+	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_HANDLE_CACHE)
+		seq_puts(s, ",nohandlecache");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL)
 		seq_puts(s, ",cifsacl");
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index cb950a5fa0782e9d3446a8a0bc3a8fdd642bc57e..6cc27f9c33a4de30bc30b0ce6d802afce9ae37b0 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -525,6 +525,7 @@ struct smb_vol {
 	bool nullauth:1;   /* attempt to authenticate with null user */
 	bool nocase:1;     /* request case insensitive filenames */
 	bool nobrl:1;      /* disable sending byte range locks to srv */
+	bool nohandlecache:1; /* disable caching dir handles if srvr probs */
 	bool mand_lock:1;  /* send mandatory not posix byte range lock reqs */
 	bool seal:1;       /* request transport encryption on share */
 	bool nodfs:1;      /* Do not request DFS, even if available */
@@ -953,6 +954,7 @@ struct cifs_tcon {
 	bool print:1; /* set if connection to printer share */
 	bool retry:1;
 	bool nocase:1;
+	bool nohandlecache:1; /* if strange server resource prob can turn off */
 	bool seal:1;      /* transport encryption for this mounted share */
 	bool unix_ext:1;  /* if false disable Linux extensions to CIFS protocol
 				for this mount even if server would support */
@@ -979,6 +981,9 @@ struct cifs_tcon {
 	struct fscache_cookie *fscache;	/* cookie for share */
 #endif
 	struct list_head pending_opens;	/* list of incomplete opens */
+	bool valid_root_fid:1;	/* Do we have a useable root fid */
+	struct mutex prfid_mutex; /* prevents reopen race after dead ses*/
+	struct cifs_fid *prfid;	/* handle to the directory at top of share */
 	/* BB add field for back pointer to sb struct(s)? */
 };
 
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1529a088383d048554cfd129de7b8898aa12f6e1..c8e42785d261bf5ea3ed60974ea51b5ffbd52599 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -106,6 +106,12 @@ cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
 		open_file->oplock_break_cancelled = true;
 	}
 	spin_unlock(&tcon->open_file_lock);
+
+	mutex_lock(&tcon->prfid_mutex);
+	tcon->valid_root_fid = false;
+	memset(tcon->prfid, 0, sizeof(struct cifs_fid));
+	mutex_unlock(&tcon->prfid_mutex);
+
 	/*
 	 * BB Add call to invalidate_inodes(sb) for all superblocks mounted
 	 * to this tcon.
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 7a10a5d0731f078247d5636d3e00aae169b48345..be3308b44944d7cc205e9571a57bdbde63cb5840 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -79,6 +79,7 @@ enum {
 	Opt_noposixpaths, Opt_nounix,
 	Opt_nocase,
 	Opt_brl, Opt_nobrl,
+	Opt_handlecache, Opt_nohandlecache,
 	Opt_forcemandatorylock, Opt_setuidfromacl, Opt_setuids,
 	Opt_nosetuids, Opt_dynperm, Opt_nodynperm,
 	Opt_nohard, Opt_nosoft,
@@ -148,6 +149,8 @@ static const match_table_t cifs_mount_option_tokens = {
 	{ Opt_nocase, "ignorecase" },
 	{ Opt_brl, "brl" },
 	{ Opt_nobrl, "nobrl" },
+	{ Opt_handlecache, "handlecache" },
+	{ Opt_nohandlecache, "nohandlecache" },
 	{ Opt_nobrl, "nolock" },
 	{ Opt_forcemandatorylock, "forcemandatorylock" },
 	{ Opt_forcemandatorylock, "forcemand" },
@@ -1445,6 +1448,12 @@ cifs_parse_mount_options(const char *mountdata, const char *devname,
 				(S_IALLUGO & ~(S_ISUID | S_IXGRP)))
 				vol->file_mode = S_IALLUGO;
 			break;
+		case Opt_nohandlecache:
+			vol->nohandlecache = 1;
+			break;
+		case Opt_handlecache:
+			vol->nohandlecache = 0;
+			break;
 		case Opt_forcemandatorylock:
 			vol->mand_lock = 1;
 			break;
@@ -3022,6 +3031,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
 	 */
 	tcon->retry = volume_info->retry;
 	tcon->nocase = volume_info->nocase;
+	tcon->nohandlecache = volume_info->nohandlecache;
 	tcon->local_lease = volume_info->local_lease;
 	INIT_LIST_HEAD(&tcon->pending_opens);
 
@@ -3580,6 +3590,8 @@ int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
 	if (pvolume_info->nobrl)
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+	if (pvolume_info->nohandlecache)
+		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_HANDLE_CACHE;
 	if (pvolume_info->nostrictsync)
 		cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;
 	if (pvolume_info->mand_lock)
@@ -4353,6 +4365,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
 	vol_info->UNC = master_tcon->treeName;
 	vol_info->retry = master_tcon->retry;
 	vol_info->nocase = master_tcon->nocase;
+	vol_info->nohandlecache = master_tcon->nohandlecache;
 	vol_info->local_lease = master_tcon->local_lease;
 	vol_info->no_linux_ext = !master_tcon->unix_ext;
 	vol_info->sectype = master_tcon->ses->sectype;
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 460084a8eac54077010c12dee60d12e7c35fc5b8..247a59774b7f27bbbe06e134100a9b4edf5586d8 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -117,6 +117,8 @@ tconInfoAlloc(void)
 		INIT_LIST_HEAD(&ret_buf->openFileList);
 		INIT_LIST_HEAD(&ret_buf->tcon_list);
 		spin_lock_init(&ret_buf->open_file_lock);
+		mutex_init(&ret_buf->prfid_mutex);
+		ret_buf->prfid = kzalloc(sizeof(struct cifs_fid), GFP_KERNEL);
 #ifdef CONFIG_CIFS_STATS
 		spin_lock_init(&ret_buf->stat_lock);
 #endif
@@ -134,6 +136,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free)
 	atomic_dec(&tconInfoAllocCount);
 	kfree(buf_to_free->nativeFileSystem);
 	kzfree(buf_to_free->password);
+	kfree(buf_to_free->prfid);
 	kfree(buf_to_free);
 }
 
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 1238cd3552f9cc8e8f8fc560117af37cd224aa13..a6e786e3924895a10eff06c5468ea133f2d5172e 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -44,26 +44,38 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
 		   __u32 create_options, void *data, int command)
 {
 	int rc, tmprc = 0;
-	__le16 *utf16_path;
+	__le16 *utf16_path = NULL;
 	__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 	struct cifs_open_parms oparms;
 	struct cifs_fid fid;
+	bool use_cached_root_handle = false;
 
-	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
-	if (!utf16_path)
-		return -ENOMEM;
+	if ((strcmp(full_path, "") == 0) && (create_options == 0) &&
+	    (desired_access == FILE_READ_ATTRIBUTES) &&
+	    (create_disposition == FILE_OPEN) &&
+	    (tcon->nohandlecache == false)) {
+		rc = open_shroot(xid, tcon, &fid);
+		if (rc == 0)
+			use_cached_root_handle = true;
+	}
+
+	if (use_cached_root_handle == false) {
+		utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
+		if (!utf16_path)
+			return -ENOMEM;
 
-	oparms.tcon = tcon;
-	oparms.desired_access = desired_access;
-	oparms.disposition = create_disposition;
-	oparms.create_options = create_options;
-	oparms.fid = &fid;
-	oparms.reconnect = false;
+		oparms.tcon = tcon;
+		oparms.desired_access = desired_access;
+		oparms.disposition = create_disposition;
+		oparms.create_options = create_options;
+		oparms.fid = &fid;
+		oparms.reconnect = false;
 
-	rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
-	if (rc) {
-		kfree(utf16_path);
-		return rc;
+		rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
+		if (rc) {
+			kfree(utf16_path);
+			return rc;
+		}
 	}
 
 	switch (command) {
@@ -107,7 +119,8 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
 		break;
 	}
 
-	rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+	if (use_cached_root_handle == false)
+		rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 	if (tmprc)
 		rc = tmprc;
 	kfree(utf16_path);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 9c6d95ffca97de94d0763d7fde9b952f4a26fb3d..12875d55c5a9fcce9ee9b8cc71ddced3b93e2141 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -322,6 +322,40 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
 }
 #endif /* STATS2 */
 
+/*
+ * Open the directory at the root of a share
+ */
+int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
+{
+	struct cifs_open_parms oparams;
+	int rc;
+	__le16 srch_path = 0; /* Null - since an open of top of share */
+	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+
+	mutex_lock(&tcon->prfid_mutex);
+	if (tcon->valid_root_fid) {
+		cifs_dbg(FYI, "found a cached root file handle\n");
+		memcpy(pfid, tcon->prfid, sizeof(struct cifs_fid));
+		mutex_unlock(&tcon->prfid_mutex);
+		return 0;
+	}
+
+	oparams.tcon = tcon;
+	oparams.create_options = 0;
+	oparams.desired_access = FILE_READ_ATTRIBUTES;
+	oparams.disposition = FILE_OPEN;
+	oparams.fid = pfid;
+	oparams.reconnect = false;
+
+	rc = SMB2_open(xid, &oparams, &srch_path, &oplock, NULL, NULL);
+	if (rc == 0) {
+		memcpy(tcon->prfid, pfid, sizeof(struct cifs_fid));
+		tcon->valid_root_fid = true;
+	}
+	mutex_unlock(&tcon->prfid_mutex);
+	return rc;
+}
+
 static void
 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 {
@@ -330,6 +364,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 	struct cifs_open_parms oparms;
 	struct cifs_fid fid;
+	bool no_cached_open = tcon->nohandlecache;
 
 	oparms.tcon = tcon;
 	oparms.desired_access = FILE_READ_ATTRIBUTES;
@@ -338,7 +373,11 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 	oparms.fid = &fid;
 	oparms.reconnect = false;
 
-	rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
+	if (no_cached_open)
+		rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
+	else
+		rc = open_shroot(xid, tcon, &fid);
+
 	if (rc)
 		return;
 
@@ -352,7 +391,8 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 			FS_DEVICE_INFORMATION);
 	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 			FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
-	SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+	if (no_cached_open)
+		SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 	return;
 }
 
@@ -394,6 +434,9 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 	struct cifs_open_parms oparms;
 	struct cifs_fid fid;
 
+	if ((*full_path == 0) && tcon->valid_root_fid)
+		return 0;
+
 	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 	if (!utf16_path)
 		return -ENOMEM;
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 8ba24a95db7136fd3286c40cea71ac6866e9b16a..800270b729e2dfed730d14ebc56821fcbe3c3661 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -65,6 +65,8 @@ extern struct cifs_ses *smb2_find_smb_ses(struct TCP_Server_Info *server,
 extern int smb3_handle_read_data(struct TCP_Server_Info *server,
 				 struct mid_q_entry *mid);
 
+extern int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
+			struct cifs_fid *pfid);
 extern void move_smb2_info_to_cifs(FILE_ALL_INFO *dst,
 				   struct smb2_file_all_info *src);
 extern int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,