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Display number of credits available

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In debugging smb3, it is useful to display the number
of credits available, so we can see when the server has not granted
sufficient operations for the client to make progress, or alternatively
the client has requested too many credits (as we saw in a recent bug)
so we can compare with the number of credits the server thinks
we have.

Add a /proc/fs/cifs/DebugData line to display the client view
on how many credits are available.

Signed-off-by: Steve French <steve.french@primarydata.com>
Reported-by: Germano Percossi <germano.percossi@citrix.com>
CC: Stable <stable@vger.kernel.org>
This commit is contained in:
Steve French 2016-09-19 22:06:35 -05:00
parent 6609804413
commit 9742805d6b
1 changed files with 1 additions and 0 deletions
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fs/cifs/cifs_debug.c
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@ -152,6 +152,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
list_for_each(tmp1, &cifs_tcp_ses_list) { list_for_each(tmp1, &cifs_tcp_ses_list) {
server = list_entry(tmp1, struct TCP_Server_Info, server = list_entry(tmp1, struct TCP_Server_Info,
tcp_ses_list); tcp_ses_list);
seq_printf(m, "\nNumber of credits: %d", server->credits);
i++; i++;
list_for_each(tmp2, &server->smb_ses_list) { list_for_each(tmp2, &server->smb_ses_list) {
ses = list_entry(tmp2, struct cifs_ses, ses = list_entry(tmp2, struct cifs_ses,