Merge tag '6.6-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client updates from Steve French:

 - fixes for excessive stack usage

 - multichannel reconnect improvements

 - DFS fix and cleanup patches

 - move UCS-2 conversion code to fs/nls and update cifs and jfs to use
   them

 - cleanup patch for compounding, one to fix confusing function name

 - inode number collision fix

 - reparse point fixes (including avoiding an extra unneeded query on
   symlinks) and a minor cleanup

 - directory lease (caching) improvement

* tag '6.6-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6: (24 commits)
  fs/jfs: Use common ucs2 upper case table
  fs/smb/client: Use common code in client
  fs/smb: Swing unicode common code from smb->NLS
  fs/smb: Remove unicode 'lower' tables
  SMB3: rename macro CIFS_SERVER_IS_CHAN to avoid confusion
  [SMB3] send channel sequence number in SMB3 requests after reconnects
  cifs: update desired access while requesting for directory lease
  smb: client: reduce stack usage in smb2_query_reparse_point()
  smb: client: reduce stack usage in smb2_query_info_compound()
  smb: client: reduce stack usage in smb2_set_ea()
  smb: client: reduce stack usage in smb_send_rqst()
  smb: client: reduce stack usage in cifs_demultiplex_thread()
  smb: client: reduce stack usage in cifs_try_adding_channels()
  smb: cilent: set reparse mount points as automounts
  smb: client: query reparse points in older dialects
  smb: client: do not query reparse points twice on symlinks
  smb: client: parse reparse point flag in create response
  smb: client: get rid of dfs code dep in namespace.c
  smb: client: get rid of dfs naming in automount code
  smb: client: rename cifs_dfs_ref.c to namespace.c
  ...

1 files changed, 17 insertions, 12 deletions

diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c
index f280502a2aee..1b5d9794ed5b 100644
--- a/fs/smb/client/transport.c
+++ b/fs/smb/client/transport.c
@@ -416,13 +416,19 @@ out:
 	return rc;
 }
 
+struct send_req_vars {
+	struct smb2_transform_hdr tr_hdr;
+	struct smb_rqst rqst[MAX_COMPOUND];
+	struct kvec iov;
+};
+
 static int
 smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
 	      struct smb_rqst *rqst, int flags)
 {
-	struct kvec iov;
-	struct smb2_transform_hdr *tr_hdr;
-	struct smb_rqst cur_rqst[MAX_COMPOUND];
+	struct send_req_vars *vars;
+	struct smb_rqst *cur_rqst;
+	struct kvec *iov;
 	int rc;
 
 	if (!(flags & CIFS_TRANSFORM_REQ))
@@ -436,16 +442,15 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
 		return -EIO;
 	}
 
-	tr_hdr = kzalloc(sizeof(*tr_hdr), GFP_NOFS);
-	if (!tr_hdr)
+	vars = kzalloc(sizeof(*vars), GFP_NOFS);
+	if (!vars)
 		return -ENOMEM;
+	cur_rqst = vars->rqst;
+	iov = &vars->iov;
 
-	memset(&cur_rqst[0], 0, sizeof(cur_rqst));
-	memset(&iov, 0, sizeof(iov));
-
-	iov.iov_base = tr_hdr;
-	iov.iov_len = sizeof(*tr_hdr);
-	cur_rqst[0].rq_iov = &iov;
+	iov->iov_base = &vars->tr_hdr;
+	iov->iov_len = sizeof(vars->tr_hdr);
+	cur_rqst[0].rq_iov = iov;
 	cur_rqst[0].rq_nvec = 1;
 
 	rc = server->ops->init_transform_rq(server, num_rqst + 1,
@@ -456,7 +461,7 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
 	rc = __smb_send_rqst(server, num_rqst + 1, &cur_rqst[0]);
 	smb3_free_compound_rqst(num_rqst, &cur_rqst[1]);
 out:
-	kfree(tr_hdr);
+	kfree(vars);
 	return rc;
 }