Attachment 17807 Details for Bug 32241 – file.diff

[patch] file.diff

file.diff (text/plain), 1.83 KB, created by davidc on 2001-11-24 05:40:01 UTC

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Creator: davidc

Created: 2001-11-24 05:40:01 UTC

Size: 1.83 KB

patch

obsolete

>--- ../../src/share/man/man9/vm_page_alloc.9	Wed Jul 18 00:09:13 2001
>+++ vm_page_alloc.9	Fri Nov 23 22:02:59 2001
>@@ -31,7 +31,7 @@
> .Os
> .Sh NAME
> .Nm vm_page_alloc
>-.Nd "allocates a page for the object and index"
>+.Nd "allocate a page for a vm_object"
> .Sh SYNOPSIS
> .In sys/param.h
> .In vm/vm.h
>@@ -41,34 +41,36 @@
> .Sh DESCRIPTION
> The
> .Fn vm_page_alloc
>-function allocates a page for
>-.Fa pindex
>-in the VM object
>-.Fa object .
>-It is assumed that a page has not already been allocated for
>+function allocates a page at
> .Fa pindex
>-and
>+within
> .Fa object .
>+It is assumed that a page has not already been allocated at
>+.Fa pindex .
>+The page returned is inserted into the object, but is not inserted
>+into the pmap.
> .Pp
>-The
> .Fn vm_page_alloc
>-function will not block.
>+will not block.
> .Pp
> Its arguments are:
> .Bl -tag -width ".Fa page_req"
> .It Fa object
> The VM object to allocate the page for.
> .It Fa pindex
>-The index of the page that should be allocated.
>+The index into the object at which the page should be inserted.
> .It Fa page_req
> A flag indicating how the page should be allocated.
> .Bl -tag -width ".Dv VM_ALLOC_INTERRUPT"
> .It Dv VM_ALLOC_NORMAL
> The page should be allocated with no special treatment.
> .It Dv VM_ALLOC_SYSTEM
>-The page can be allocated even if the buffer cache queue is empty
>-and the free count is above the interrupt reserved water mark.
>-This should be used only when the system really needs the page.
>+The page can be allocated if the cache is empty and the free page
>+count is above the interrupt reserved water mark.  If
>+.Dv VM_ALLOC_INTERRUPT
>+is set the page can be allocated as long as the free page count is
>+greater than zero.
>+This flag should be used only when the system really needs the page.
> .It Dv VM_ALLOC_INTERRUPT
> .Fn vm_page_alloc
> is being called during an interrupt and therefore the cache cannot

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