help with I/O optimization with object

While studying the file ufs_readwrite.c, I see routines like uiomoveco() that calls vm_uiomove() in vm_map.c. I am almost sure that these are new in FreeBSD 3.x. The comment in ffs_read() says not a VM based I/O requests == not headed for the buffer cache. This does not make sense to me

Re: help with I/O optimization with object

On Mon, 7 Jun 1999, Zhihui Zhang wrote: While studying the file ufs_readwrite.c, I see routines like uiomoveco() that calls vm_uiomove() in vm_map.c. I am almost sure that these are new in FreeBSD 3.x. The comment in ffs_read() says not a VM based I/O requests == not headed for the