From: Shuvabrata Ganguly <sganguly@cse.iitkgp.ernet.in>
To: linux MM <linux-mm@kvack.org>
Subject: Question about swap_in() in 2.2.16 ....
Date: Wed, 08 Nov 2000 01:32:26 -0500 [thread overview]
Message-ID: <3A08F37A.38C156C1@cse.iitkgp.ernet.in> (raw)
hi,
after the missing page has been swapped in this bit of code is
executed:-
if (!write_access || is_page_shared(page_map)) {
set_pte(page_table, mk_pte(page, vma->vm_page_prot));
return 1;
}
Now this creates a read-only mapping even if the access was a "write
acess" ( if the page is shared ). Doesnt this mean that an additional
"write-protect" fault will be taken immediately when the process tries
to write again ? Or am i missing something here ?
joy
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next reply other threads:[~2000-11-08 6:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-08 6:32 Shuvabrata Ganguly [this message]
2000-11-08 10:05 ` Stephen C. Tweedie
2000-11-10 4:23 ` Shuvabrata Ganguly
2000-11-10 9:56 ` Stephen C. Tweedie
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