[p4] Patching files checked out from Perforce with no questions asked

[Geir A. Myrestrand]

Upon applying a rather large patch set on files checked out from 
Perforce, I am presented with this question for every file modified by 
the patch set:

Get file <filename_modified_by_patch_set> from Perforce with lock? [y]

The desired behavior is no, but I don't want to answer this question for 
each file in the patch set --I want no for all, without the interactive 
portion.

How can I achieve this?

I mean, is there an environment variable or Perforce setting I can use 
to change this behavior?

P4CLIENT, P4USER, and P4PORT are set, and I am using the p4 command line 
client on RHELAS4. The Perforce server is 2004.2/72935.

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Geir A. Myrestrand