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4dcc5c2d1d
Swap space can be freed from an interrupt and so swap reservation and
freeing must occur at splvm.
Add swap_pager_reserve() code to support a new swap pre-reservation
capability for the VN device.
Generally cleanup the swap code by simplifying the swp_pager_meta_build()
static function and consolidating the SWAPBLK_NONE test from a bit test
to an absolute compare. The bit test was left over from a rejected
swap allocation scheme that was not ultimately committed. A few other
minor cleanups were also made.
Reorganize the swap strategy code, again for VN support, to not
reallocate swap when writing as this messes up pre-reservation and
can fragment I/O unnecessarily as VN-baesd disk is messed around with.
Reviewed by: Alan Cox <alc@cs.rice.edu>, David Greenman <dg@root.com>
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|---|---|---|
| .. | ||
| default_pager.c | ||
| default_pager.h | ||
| device_pager.c | ||
| pmap.h | ||
| swap_pager.c | ||
| swap_pager.h | ||
| vm.h | ||
| vm_extern.h | ||
| vm_fault.c | ||
| vm_glue.c | ||
| vm_inherit.h | ||
| vm_init.c | ||
| vm_kern.c | ||
| vm_kern.h | ||
| vm_map.c | ||
| vm_map.h | ||
| vm_meter.c | ||
| vm_mmap.c | ||
| vm_object.c | ||
| vm_object.h | ||
| vm_page.c | ||
| vm_page.h | ||
| vm_pageout.c | ||
| vm_pageout.h | ||
| vm_pager.c | ||
| vm_pager.h | ||
| vm_param.h | ||
| vm_prot.h | ||
| vm_swap.c | ||
| vm_unix.c | ||
| vm_zone.c | ||
| vm_zone.h | ||
| vnode_pager.c | ||
| vnode_pager.h | ||