tree d2c32b7875356357062a0ab67044a4ae7287b689
parent 52ace1ef1259e119a24a34b45cb800c4e7529090
author Steve French <smfrench@gmail.com> 1474609456 -0500
committer Steve French <smfrench@gmail.com> 1476292113 -0500

SMB3: Add mount parameter to allow user to override max credits

Add mount option "max_credits" to allow setting maximum SMB3
credits to any value from 10 to 64000 (default is 32000).
This can be useful to workaround servers with problems allocating
credits, or to throttle the client to use smaller amount of
simultaneous i/o or to workaround server performance issues.

Also adds a cap, so that even if the server granted us more than
65000 credits due to a server bug, we would not use that many.

Signed-off-by: Steve French <steve.french@primarydata.com>