cvs commit: src/sys/kern vfs_subr.c src/sys/nfsclient nfs_bio.c
src/sys/fs/smbfs smbfs_io.c src/sys/fs/nwfs nwfs_io.c
ups at FreeBSD.org
Wed May 24 18:01:29 PDT 2006
ups 2006-05-25 01:00:36 UTC
FreeBSD src repository
Do not set B_NOCACHE on buffers when releasing them in flushbuflist().
If B_NOCACHE is set the pages of vm backed buffers will be invalidated.
However clean buffers can be backed by dirty VM pages so invalidating them
can lead to data loss.
Add support for flush dirty page in the data invalidation function
of some network file systems.
This fixes data losses during vnode recycling (and other code paths
using invalbuf(*,V_SAVE,*,*)) for data written using an mmaped file.
Collaborative effort by: jhb@,mohans@,peter@,ps@,ups@
Reviewed by: tegge@
MFC after: 7 days
Revision Changes Path
1.43 +4 -0 src/sys/fs/nwfs/nwfs_io.c
1.35 +4 -0 src/sys/fs/smbfs/smbfs_io.c
1.673 +1 -1 src/sys/kern/vfs_subr.c
1.157 +11 -0 src/sys/nfsclient/nfs_bio.c
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