Add pbgetbo()/pbrelbo() lighter weight versions of pbgetvp()/pbrelvp().

More kasserts.

style polishing.

Move pbgetvp() and pbrelvp() to vm_pager.c with the rest of the pbuf stuff.

expect the caller to have called pbrelvp() if necessary.

Retire b_magic now, we have the bufobj containing the same hint.

Move the buffer method vector (buf->b_op) to the bufobj.

Extend it with a strategy method.

Add bufstrategy() which do the usual VOP_SPECSTRATEGY/VOP_STRATEGY
song and dance.

Rename ibwrite to bufw

Move the buffer method vector (buf->b_op) to the bufobj.

Extend it with a strategy method.

Add bufstrategy() which do the usual VOP_SPECSTRATEGY/VOP_STRATEGY
song and dance.

Rename ibwrite to bufwrite().

Move the two NFS buf_ops to more sensible places, add bufstrategy
to them.

Add inlines for bwrite() and bstrategy() which calls through
buf->b_bufobj->b_ops->b_{write,strategy}().

Replace almost all VOP_STRATEGY()/VOP_SPECSTRATEGY() calls with bstrategy().

show more ...

The demise of vm_pager_map_page() in revision 1.93 of vm/vm_pager.c permits
the reduction of the pager map's size by 8M bytes. In other words, eight
megabytes of largely wasted KVA are returned to t

The demise of vm_pager_map_page() in revision 1.93 of vm/vm_pager.c permits
the reduction of the pager map's size by 8M bytes. In other words, eight
megabytes of largely wasted KVA are returned to the kernel map for use
elsewhere.

show more ...

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core

Eliminate vm_pager_map_page() and vm_pager_unmap_page() and their uses.
Use sf_buf_alloc() and sf_buf_free() instead.

- Remove comments referring to functions that no longer exist.

Use sparse struct initializations for struct pagerops.

This makes grepping for which pagers implement which methods easier.

Use kmem_alloc_nofault() instead of kmem_alloc_pageable() to allocate
swapbkva. Swapbkva mappings are explicitly managed using pmap_qenter(),
not on-demand by vm_fault(), making kmem_alloc_nofault()

Use kmem_alloc_nofault() instead of kmem_alloc_pageable() to allocate
swapbkva. Swapbkva mappings are explicitly managed using pmap_qenter(),
not on-demand by vm_fault(), making kmem_alloc_nofault() more appropriate.

Submitted by: tegge

show more ...

Move extern declaration of the various pagerops from vm_pager.c
to vm_pager.h where the various pagers will also see them.

Initialize b_saveaddr when we hand out pbufs

Use __FBSDID().

Lock the vm_object when performing vm_pager_deallocate().

Remove GIANT_REQUIRED from getpbuf(). Reviewed by: tegge

Reduce pbuf_mtx's scope in relpbuf(). Submitted by: tegge

- Add an interlock argument to BUF_LOCK and BUF_TIMELOCK.
- Remove the buftimelock mutex and acquire the buf's interlock to protect
these fields instead.
- Hold the vnode interlock while locking

- Add an interlock argument to BUF_LOCK and BUF_TIMELOCK.
- Remove the buftimelock mutex and acquire the buf's interlock to protect
these fields instead.
- Hold the vnode interlock while locking bufs on the clean/dirty queues.
This reduces some cases from one BUF_LOCK with a LK_NOWAIT and another
BUF_LOCK with a LK_TIMEFAIL to a single lock.

Reviewed by: arch, mckusick

show more ...

o Remove some long dead code: from revision 1.41 of vm/vm_pager.c
3+ years ago.
o Remove some unused prototypes.

o Remove GIANT_REQUIRED from vm_pager_allocate() and vm_pager_deallocate().

Change callers of mtx_init() to pass in an appropriate lock type name. In
most cases NULL is passed, but in some cases such as network driver locks
(which use the MTX_NETWORK_LOCK macro) and UMA zon

Change callers of mtx_init() to pass in an appropriate lock type name. In
most cases NULL is passed, but in some cases such as network driver locks
(which use the MTX_NETWORK_LOCK macro) and UMA zone locks, a name is used.

Tested on: i386, alpha, sparc64

show more ...

Remove __P.

Convert all pmap_kenter/pmap_kremove pairs in MI code to use pmap_qenter/
pmap_qremove. pmap_kenter is not safe to use in MI code because it is not
guaranteed to flush the mapping from the tlb on al

Convert all pmap_kenter/pmap_kremove pairs in MI code to use pmap_qenter/
pmap_qremove. pmap_kenter is not safe to use in MI code because it is not
guaranteed to flush the mapping from the tlb on all cpus. If the process
in question is preempted and migrates cpus between the call to pmap_kenter
and pmap_kremove, the original cpu will be left with stale mappings in its
tlb. This is currently not a problem for i386 because we do not use PG_G on
SMP, and thus all mappings are flushed from the tlb on context switches, not
just user mappings. This is not the case on all architectures, and if PG_G
is to be used with SMP on i386 it will be a problem. This was committed by
peter earlier as part of his fine grained tlb shootdown work for i386, which
was backed out for other reasons.

Reviewed by: peter

show more ...

- Remove a number of extra newlines that do not belong here according to
style(9)
- Minor space adjustment in cases where we have "( ", " )", if(), return(),
while(), for(), etc.
- Add /* SYMBOL

- Remove a number of extra newlines that do not belong here according to
style(9)
- Minor space adjustment in cases where we have "( ", " )", if(), return(),
while(), for(), etc.
- Add /* SYMBOL */ after a few #endifs.

Reviewed by: alc

show more ...