git: kern: Remove the little-use kvasnprintf() and kvasfree()

[Aaron LI]

commit f52807a806e7f3f3bdb78d3a32ac54e71a990066
Author: Aaron LI <aly at aaronly.me>
Date:   Sun Aug 30 12:18:05 2026 +0800

    kern: Remove the little-use kvasnprintf() and kvasfree()
    
    The kvasnprintf() requires a known max length, so it's basically the
    same as kmalloc()+kvsnprintf().  Therefore, it's different to vasprintf()
    and is of little use.  Actually, the DRM subsystem implements its
    kvasprintf(), the vasprintf() equivalent.
    
    For simplicity, just remove kvasnprintf()+kvasfree() and convert
    existing code to either use a buffer array or manually call kmalloc().

Summary of changes:
 sys/dev/drm/drm_dragonfly.c      |  5 ++---
 sys/dev/raid/vinum/vinumconfig.c |  9 +++++----
 sys/kern/kern_conf.c             | 15 ++++++---------
 sys/kern/subr_prf.c              | 24 ------------------------
 sys/sys/systm.h                  |  3 ---
 sys/vfs/devfs/devfs_core.c       | 12 ++++++------
 6 files changed, 19 insertions(+), 49 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f52807a806e7f3f3bdb78d3a32ac54e71a990066


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