* mapped pages
@ 2003-08-27 15:55 Raghu R. Arur
2003-08-27 16:03 ` William Lee Irwin III
0 siblings, 1 reply; 3+ messages in thread
From: Raghu R. Arur @ 2003-08-27 15:55 UTC (permalink / raw)
To: kernelnewbies; +Cc: linux-mm
Do all mapped pages have buffers? Is there a possibility that a mapped
page to have its page->buffer to be NULL
Thanks,
Raghu
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* Re: mapped pages
2003-08-27 15:55 mapped pages Raghu R. Arur
@ 2003-08-27 16:03 ` William Lee Irwin III
2003-08-27 16:09 ` Raghu R. Arur
0 siblings, 1 reply; 3+ messages in thread
From: William Lee Irwin III @ 2003-08-27 16:03 UTC (permalink / raw)
To: Raghu R. Arur; +Cc: kernelnewbies, linux-mm
On Wed, Aug 27, 2003 at 11:55:09AM -0400, Raghu R. Arur wrote:
> Do all mapped pages have buffers? Is there a possibility that a mapped
> page to have its page->buffer to be NULL
No to the first question, yes to the second.
-- wli
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* Re: mapped pages
2003-08-27 16:03 ` William Lee Irwin III
@ 2003-08-27 16:09 ` Raghu R. Arur
0 siblings, 0 replies; 3+ messages in thread
From: Raghu R. Arur @ 2003-08-27 16:09 UTC (permalink / raw)
To: William Lee Irwin III; +Cc: kernelnewbies, linux-mm
So this means that I need to use try_to_release_page() on only those
mapped pages that have page->buffer non-null. Otherwise releasepage
functions of the address space crash. And if I have to return a mapped
page to the freelist that have page->buffer null, i just have to do
__remove_inode_page. I am speaking in the context of 2.4 kernel. Am I
right.
Thanks a lot,
Raghu
On Wed, 27 Aug 2003, William Lee Irwin III wrote:
> On Wed, Aug 27, 2003 at 11:55:09AM -0400, Raghu R. Arur wrote:
> > Do all mapped pages have buffers? Is there a possibility that a mapped
> > page to have its page->buffer to be NULL
>
> No to the first question, yes to the second.
>
> -- wli
>
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