cifs: smbd: Check send queue size before posting a send
authorLong Li <longli@microsoft.com>
Mon, 30 Mar 2020 18:04:07 +0000 (11:04 -0700)
committerSteve French <stfrench@microsoft.com>
Tue, 7 Apr 2020 17:41:16 +0000 (12:41 -0500)
commit3ffbe78aff93586d3e09e8af4501c563ab367c75
treeb6450147a9a1092f6b445dcbde85dba5cba07b9d
parent072a14ec6386829314ca96c725175ac1631360da
cifs: smbd: Check send queue size before posting a send

Sometimes the remote peer may return more send credits than the send queue
depth. If all the send credits are used to post senasd, we may overflow the
send queue.

Fix this by checking the send queue size before posting a send.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
fs/cifs/smbdirect.c
fs/cifs/smbdirect.h