write kernel doc for struct putfile_active_buffer {

[arfvidsonUIS]

Use this format to write the comments for struct putfile_active_buffer

Example kernel-doc data structure comment.

/**

• struct blah - the basic blah structure
• @mem1: describe the first member of struct blah
• @mem2: describe the second member of struct blah,
• perhaps with more lines and words. *
• Longer description of this structure. */

[davidker]

Putfile is gone.this should be gone as well.