PR/45829 CVS commit: src/sys/dev

["Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>]

The following reply was made to PR kern/45829; it has been noted by GNATS.

From: "Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/45829 CVS commit: src/sys/dev
Date: Mon, 26 Mar 2012 16:28:09 +0000

 Module Name:   src
 Committed By:  hannken
 Date:          Mon Mar 26 16:28:08 UTC 2012
 
 Modified Files:
        src/sys/dev: vnd.c vndvar.h
 
 Log Message:
 When backed by a sparse file limit the number of pending requests.
 
 Should fix PR #45829: "writing to vnd on sparse file blocks on pager_map"
 where the pager_map gets exhausted by requests enqueued on a vnd
 device and the device worker thread blocks on putpages() needing the map.
 
 While here always sync the underlying vnode before calling biodone().
 
 XXX: vnd should be converted to mutex/condvar.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.219 -r1.220 src/sys/dev/vnd.c
 cvs rdiff -u -r1.31 -r1.32 src/sys/dev/vndvar.h
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.