CVS commit: src/sys/arch/xen/xen

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

Module Name:    src
Committed By:   jdolecek
Date:           Mon Apr 20 16:12:28 UTC 2020

Modified Files:
        src/sys/arch/xen/xen: xbdback_xenbus.c

Log Message:
remove I/O defragmentation logic, pass requests straight to the
underlying block device without trying to coalesce them

it seems rarely useful, and it makes the handling logic unnecessarily complex -
ultimately it's the DomU operating system responsibility to issue optimal I/O

might also help with the ZFS problem reported on port-xen, and will surely
simplify eventual indirect segment support


To generate a diff of this commit:
cvs rdiff -u -r1.82 -r1.83 src/sys/arch/xen/xen/xbdback_xenbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.