CVS commit: src/sys/miscfs/genfs

[Chuck Silvers <chs%netbsd.org@localhost>]

Module Name:    src
Committed By:   chs
Date:           Sun Aug  8 18:17:12 UTC 2010

Modified Files:
        src/sys/miscfs/genfs: genfs_io.c

Log Message:
in genfs_getpages(), mark the vnode dirty (ie. add to syncer worklist
and set VI_WRMAPDIRTY) after we have busied the pages rather than
before.  this prevents other threads calling genfs_do_putpages() from
marking the vnode clean again while we're in the process of creating
new writable mappings, since such threads will wait for the page(s) to
become unbusy before proceeding.
fixes the problem recently reported by hannken@ on tech-kern.


To generate a diff of this commit:
cvs rdiff -u -r1.37 -r1.38 src/sys/miscfs/genfs/genfs_io.c

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