* page flags
@ 2003-10-01 17:49 Raghu R. Arur
2003-10-01 22:53 ` Hugh Dickins
0 siblings, 1 reply; 2+ messages in thread
From: Raghu R. Arur @ 2003-10-01 17:49 UTC (permalink / raw)
To: kenelnewbies; +Cc: linux-mm
In 2.4.19 linux, I see that 9th bit of page->flags is not used for any
flag. Is there a particular reason for doing so?
Thanks,
Raghu
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: page flags
2003-10-01 17:49 page flags Raghu R. Arur
@ 2003-10-01 22:53 ` Hugh Dickins
0 siblings, 0 replies; 2+ messages in thread
From: Hugh Dickins @ 2003-10-01 22:53 UTC (permalink / raw)
To: Raghu R. Arur; +Cc: kenelnewbies, linux-mm
On Wed, 1 Oct 2003, Raghu R. Arur wrote:
>
> In 2.4.19 linux, I see that 9th bit of page->flags is not used for any
> flag. Is there a particular reason for doing so?
Up to 2.4.9 there was #define PG_swap_cache 9, but we deleted that as
unnecessary in 2.4.10, changing the PageSwapCache macro. It happens
to have stayed free ever since in 2.4, but I don't believe there's a
curse on that bit.
Hugh
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2003-10-01 22:53 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-10-01 17:49 page flags Raghu R. Arur
2003-10-01 22:53 ` Hugh Dickins
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox