Date: Mon, 12 Feb 2007 19:08:29 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/fs/nwfs nwfs_io.c src/sys/fs/smbfs smbfs_io.c src/sys/kern vfs_subr.c src/sys/nfsclient nfs_bio.c Message-ID: <200702121908.l1CJ8TuL081758@repoman.freebsd.org>
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jhb 2007-02-12 19:08:29 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sys/fs/nwfs nwfs_io.c
sys/fs/smbfs smbfs_io.c
sys/kern vfs_subr.c
sys/nfsclient nfs_bio.c
Log:
MFC: 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.
Revision Changes Path
1.41.2.1 +7 -0 src/sys/fs/nwfs/nwfs_io.c
1.33.2.1 +7 -0 src/sys/fs/smbfs/smbfs_io.c
1.635.2.25 +1 -1 src/sys/kern/vfs_subr.c
1.152.2.2 +13 -0 src/sys/nfsclient/nfs_bio.c
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