git: kernel - Add dirty vnode management facility
Matthew Dillon
dillon at crater.dragonflybsd.org
Tue Apr 17 23:38:30 PDT 2018
commit 55a5a1ba587bcf642c0eb777e49521c6b2e69858
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Tue Apr 17 23:06:18 2018 -0700
kernel - Add dirty vnode management facility
* Keep track of how many vnodes are queued to the syncer, which
is basically the number of dirty vnodes. The syncer vnode is
included so the idle count is usually 1 and not 0.
* vn_syncer_count() returns the count.
* vn_syncer_one() attempts to fsync the next dirty vnode immediately,
if it can acquire it non-blocking. The special syncer vnode is
ignored. On failure the vnode will be requeued for 1 second,
so this routine can be cycled.
Summary of changes:
sys/kern/vfs_sync.c | 115 ++++++++++++++++++++++++++++++++++++++++------------
sys/sys/vnode.h | 2 +
2 files changed, 90 insertions(+), 27 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/55a5a1ba587bcf642c0eb777e49521c6b2e69858
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