On Wed, 31 May 2000, Joy Ganguly wrote:

> what is the significance of QUEUE_VMIO buffer (struct buf) queue ?? as
> far as i could see they  are not used at all....but maybe i am wrong.

It signifies bitrot.  Its use was removed more than 5 years ago in
rev.1.35 of sys/kern/vfs_bio.c, but its definition was not removed
until less than a year ago in rev.1.75 of sys/sys/buf.h.

Bruce



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