smb3: interface count displayed incorrectly
The "Server interfaces" count in /proc/fs/cifs/DebugData increases as the interfaces are requeried, rather than being reset to the new value. This could cause a problem if the server disabled multichannel as the iface_count is checked in try_adding_channels to see if multichannel still supported. Also fixes a coverity warning: Addresses-Coverity: 1526374 ("Concurrent data access violations (MISSING_LOCK)") Cc: <stable@vger.kernel.org> Reviewed-by: Bharath SM <bharathsm@microsoft.com> Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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