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cifs: do not negotiate session if session already exists

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In cifs_get_smb_ses, if we find an existing matching session,
we should not send a negotiate request for the session if a
session reconnect is not necessary.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Shyam Prasad N 2021-07-19 10:03:38 +00:00 committed by Steve French
parent 02102744d3
commit 8e07757bec
1 changed files with 10 additions and 8 deletions
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18
fs/cifs/connect.c
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@ -1943,16 +1943,18 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
ses->status); ses->status);
mutex_lock(&ses->session_mutex); mutex_lock(&ses->session_mutex);
rc = cifs_negotiate_protocol(xid, ses);
if (rc) {
mutex_unlock(&ses->session_mutex);
/* problem -- put our ses reference */
cifs_put_smb_ses(ses);
free_xid(xid);
return ERR_PTR(rc);
}
if (ses->need_reconnect) { if (ses->need_reconnect) {
cifs_dbg(FYI, "Session needs reconnect\n"); cifs_dbg(FYI, "Session needs reconnect\n");
rc = cifs_negotiate_protocol(xid, ses);
if (rc) {
mutex_unlock(&ses->session_mutex);
/* problem -- put our ses reference */
cifs_put_smb_ses(ses);
free_xid(xid);
return ERR_PTR(rc);
}
rc = cifs_setup_session(xid, ses, rc = cifs_setup_session(xid, ses,
ctx->local_nls); ctx->local_nls);
if (rc) { if (rc) {