git: Kernel - Fix issues with vnode_pager_setsize() (effects NFS
commit c7841cbec4a96ffd7a4d6b4f0b8d3d07f9e278da
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Mon Aug 24 15:37:34 2009 -0700
Kernel - Fix issues with vnode_pager_setsize() (effects NFS only)
* When truncating a file to non-zero length, if the filesystem calls
vnode_pager_setsize() with a truncation offset that is not a
multiple of DEV_BSIZE vnode_pager_setsize() will improperly clear
the dirty bit for the overlapping DEV_BSIZE'd block in the VM page
straddling the truncation point.
This only effects NFS. The fsx filesystem test was failing due to
a lost dirty page after a truncation.
Reported-by: Antonio Huete Jimenez <tuxillo@quantumachine.net>
Summary of changes:
sys/kern/kern_slaballoc.c | 4 +++
sys/kern/kern_subr.c | 48 +++++++++++++++++++++++++++++++++++++++++++++
sys/sys/systm.h | 1 +
sys/sys/uio.h | 1 +
sys/vm/vm_page.c | 5 ++++
sys/vm/vnode_pager.c | 15 ++++++++++++-
6 files changed, 72 insertions(+), 2 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/c7841cbec4a96ffd7a4d6b4f0b8d3d07f9e278da
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