diff options
| author | msmith <msmith@FreeBSD.org> | 1998-02-26 06:39:59 +0000 |
|---|---|---|
| committer | msmith <msmith@FreeBSD.org> | 1998-02-26 06:39:59 +0000 |
| commit | 15e6194107ac825d2decda9954710a2fbbbe591d (patch) | |
| tree | 455b67168529813206d6fd3225edcad28f7e615c /sys/ufs/ffs/ffs_vnops.c | |
| parent | abb797303f8a1c9c501930df5cee82ba24bbc3a0 (diff) | |
| download | FreeBSD-src-15e6194107ac825d2decda9954710a2fbbbe591d.zip FreeBSD-src-15e6194107ac825d2decda9954710a2fbbbe591d.tar.gz | |
In the author's words:
These diffs implement the first stage of a VOP_{GET|PUT}PAGES pushdown
for local media FS's.
See ffs_putpages in /sys/ufs/ufs/ufs_readwrite.c for implementation
details for generic *_{get|put}pages for local media FS's. Support
is trivial to add for any FS that formerly relied on the default
behaviour of the vnode_pager in in EOPNOTSUPP cases (just copy the
ffs_getpages() code for the FS in question's *_{get|put}pages).
Obviously, it would be better if each local media FS implemented a
more optimal method, instead of calling an exported interface from
the /sys/vm/vnode_pager.c, but this is a necessary first step in
getting the FS's to a point where they can be supplied with better
implementations on a case-by-case basis.
Obviously, the cd9660_putpages() can be rather trivial (since it
is a read-only FS type 8-)).
A slight (temporary) modification is made to print a diagnostic message
in the case where the underlying filesystem attempts to engage in the
previous behaviour. Failure is likely to be ungraceful.
Submitted by: terry@freebsd.org (Terry Lambert)
Diffstat (limited to 'sys/ufs/ffs/ffs_vnops.c')
| -rw-r--r-- | sys/ufs/ffs/ffs_vnops.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/ufs/ffs/ffs_vnops.c b/sys/ufs/ffs/ffs_vnops.c index 522f089..0210d61 100644 --- a/sys/ufs/ffs/ffs_vnops.c +++ b/sys/ufs/ffs/ffs_vnops.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 - * $Id: ffs_vnops.c,v 1.41 1998/02/04 22:33:33 eivind Exp $ + * $Id: ffs_vnops.c,v 1.42 1998/02/06 12:14:16 eivind Exp $ */ #include <sys/param.h> @@ -62,6 +62,7 @@ static int ffs_fsync __P((struct vop_fsync_args *)); static int ffs_getpages __P((struct vop_getpages_args *)); +static int ffs_putpages __P((struct vop_putpages_args *)); static int ffs_read __P((struct vop_read_args *)); static int ffs_write __P((struct vop_write_args *)); @@ -71,6 +72,7 @@ static struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { { &vop_default_desc, (vop_t *) ufs_vnoperate }, { &vop_fsync_desc, (vop_t *) ffs_fsync }, { &vop_getpages_desc, (vop_t *) ffs_getpages }, + { &vop_putpages_desc, (vop_t *) ffs_putpages }, { &vop_read_desc, (vop_t *) ffs_read }, { &vop_reallocblks_desc, (vop_t *) ffs_reallocblks }, { &vop_write_desc, (vop_t *) ffs_write }, |
