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VOP_GETPAGES, VOP_PUTPAGES — ?ե????뤫?? VM ?ڡ????ؤ??ɤ߹??ߤޤ??Ͻ񤭹???

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<sys/param.h> <sys/vnode.h> <vm/vm.h> int VOP_GETPAGES(struct vnode *vp, vm_page_t *m, int count, int reqpage, vm_ooffset_t offset) int VOP_PUTPAGES(struct vnode *vp, vm_page_t *m, int count, int sync, int *rtvals, vm_ooffset_t offset)

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VOP_GETPAGES() ?᥽?åɤϡ??̾??Υե????뤬?ظ??ˤ??벾?ۥ??????Υڡ??????ɤ߹??? ?Τ????ˡ??ƤӽФ????ޤ??? ¾?????ܤ????ڡ??????ظ???Ʊ???ե??????????ܤ????ΰ褬?????????ˤϡ? VOP_GETPAGES() ??Ʊ?ͤˤ??????Υڡ??????ɤ߹??ޤ??뤿?????׵ᤵ???ޤ????????????뤳?Ȥ? ɬ?ܤʤ櫓?ǤϤ????ޤ????? VOP_PUTPAGES() ?᥽?åɤ?ȿ?ФΤ??Ȥ??Ԥ??ޤ??? ???ʤ????????ۥ??????????ܤ????????ƥ??ʥڡ??????񤭽Ф????ޤ???

???????ˡ?vnode ?Υ??å????ݻ??????ޤ??????ڡ??????塼?? VM ???֥??????Ȥ? ???å??Ϥɤ??????ݻ??????ޤ????? ξ???Υ᥽?åɤϡ????????????????ȥ??顼??????????ξ???Ȥ⡢ ???Τޤޤξ??֤??????ޤ???

?????ϰʲ????̤??Ǥ???

vp

?????????????ե????롣

m

?ɤ߹??ޤ????ޤ??Ͻ񤭹??ޤ????٤??ե???????Ϣ³?????ΰ???ɽ?????? Ϣ³?????ڡ??????????κǽ??????ǤؤΥݥ??󥿤Ǥ???

count

?????????????Υڡ??????Ǥ???

sync

?񤭹??ߤ?Ʊ?????????٤??????ˤ? VM_PAGER_PUT_SYNC ?Ǥ???

rtvals

VOP_PUTPAGES() ?ˤ??äƽ񤭹??ޤ줿???줾???Υڡ????ξ??֤򼨤??Ƥ??? VM ?????ƥ??? ???̥????ɤ??????Ǥ???

reqpage

?ڡ??????????????׵ᤵ?줿?ڡ????Υ????ǥå????Ǥ??? ???ʤ????????Υ᥽?åɤμ????????갷???ʤ????Фʤ??ʤ???1 ?ڡ????Ǥ???

offset

?ե??????????Τ??Υޥåפ??줿?ڡ??????Ϥޤ??????ؤΥ??ե??åȤǤ???

VOP_PUTPAGES() ?᥽?åɤξ??֤ϡ????? rtvals[] ?????ˡ??ġ??Υڡ??????Ȥ??֤????ޤ??? ???????????????ͤϰʲ????̤??Ǥ???

VM_PAGER_OK

???Υڡ????????????ƽ񤭹??ޤ??ޤ????? ?????Ϥ??Υڡ????????꡼???Ǥ??뤳?Ȥ???Ͽ???뤿???? vm_pager_undirty(9) ???ƤӽФ??ʤ????Фʤ??ޤ?????

VM_PAGER_PEND

???Υڡ???????Ʊ???˽񤭹??ޤ????褦?˥??????塼?뤵???ޤ????? ?񤭹??ߤ???λ???????ˤϡ???λ???????Хå??ϥӥ????ե饰?򥯥ꥢ???? ???Υڡ????򥦥????Ȥ??Ƥ???¾?Υ????åɤ򵯤????????ˡ? vm_object_pip_wakeup(9) ?????? vm_page_io_finish(9) ???ƤӽФ??٤??Ǥ??? ?????? vm_page_undirty(9) ???ƤӽФ??ޤ???

VM_PAGER_BAD

???Υڡ????ϴ??????ظ??ˤ????ե??????ν?ü???ۤ??Ƥ??ޤ????? ???? vnode ?Υե????륷???ƥब???????????????Ƥ????????ˤϡ? ???ξ??֤ϵ??????????٤??ǤϤ????ޤ?????

VM_PAGER_ERROR

???̤???¸???ǥ????ޤ??ϥץ??ȥ????Υ??顼?Τ??ᡢ ???Υڡ????Ͻ񤭹??ޤ??뤳?Ȥ??????ޤ????Ǥ?????

VM_PAGER_FAIL

VM_PAGER_ERROR ??Ʊ?ͤ˼??갷?????ޤ????? VM_PAGER_ERROR

VM_PAGER_AGAIN

???Υڡ????Ϥ????׵??ˤ??äƼ??갷?????ޤ????Ǥ?????

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???????? m[reqpage] ???ɤ߹??????????ˤ? VOP_GETPAGES() ?? VM_PAGER_OK ???֤????????Ǥʤ??????ˤ? VM_PAGER_ERROR ???֤??ޤ??? ?????ǡ? VOP_PUTPAGES() ???????ͤ? rtvals[0] ?Ǥ???

??Ϣ????

vm_object_pip_wakeup(9), vm_page_free(9), vm_page_io_finish(9), vm_page_undirty(9), vm_page_wakeup(9), vnode(9)

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???Υޥ˥奢???ڡ????? Doug Rabson ???񤭡????θ??¼??? Garrett Wollman ??????ľ???ޤ?????