I'm in the process of porting a driver to Linux. The author of the
driver conveniently broke it into os-dependent and independent sections.
One of the things in the "OS" dependent section is a routine to lock a
section of memory presumably to be used for DMA.
So, what I want to do is this: given a pointer to a previously
kmalloc'ed block, and the length of that block, I want to (a) identify
each page associated with the block and (b) lock each page. It appears
that I can lock the page either by incrementing it's reference count, or
by setting the PG_locked flag for the page.
Which method is preferred? Is there another method I should be using
instead?
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This archive was generated by hypermail 2b29 : Wed Aug 15 2001 - 21:00:58 EST