From: Marcelo Tosatti <marcelo@conectiva.com.br>
To: Ingo Molnar <mingo@elte.hu>
Cc: Hugh Dickins <hugh@veritas.com>, lkml <linux-kernel@vger.kernel.org>
Subject: find_get_swapcache_page() question
Date: Mon, 27 Aug 2001 21:27:00 -0300 (BRT) [thread overview]
Message-ID: <Pine.LNX.4.21.0108272123380.7385-100000@freak.distro.conectiva> (raw)
Ingo,
Looking at find_get_swapcache_page(), I can't see _how_ we can find a
page on the swapper pagecache table that is not a swapcache page.
How that can happen ?
spin_lock(&pagecache_lock);
page = __find_page_nolock(mapping, offset, *hash);
if (page) {
spin_lock(&pagemap_lru_lock);
if (PageSwapCache(page))
page_cache_get(page);
else
page = NULL; <-----
spin_unlock(&pagemap_lru_lock);
}
spin_unlock(&pagecache_lock);
next reply other threads:[~2001-08-28 1:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-28 0:27 Marcelo Tosatti [this message]
2001-08-28 11:27 ` find_get_swapcache_page() question Hugh Dickins
2001-08-28 15:45 ` Rik van Riel
2001-08-28 16:27 ` Hugh Dickins
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