From: Andrea Arcangeli <andrea@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: sct@redhat.com, torvalds@transmeta.com, linux-mm@kvack.org
Subject: Re: 2.3.x swap cache seems to be a big leak
Date: Sat, 3 Jun 2000 14:32:19 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.21.0006031428010.7928-100000@inspiron.random> (raw)
In-Reply-To: <200004251203.FAA04709@pizda.ninka.net>
On Tue, 25 Apr 2000, David S. Miller wrote:
>__delete_from_swap_cache depends upon remove_inode_page doing
>a put_page or similar to kill the reference of the swap cache
>itself
__delete_from_swap_cache must not decrease the reference count.
>We changed remove_inode_page during the page cache rewrite such
>that is no longer puts the page, the caller does.
shrink_mmap does in the made_inode_progress path (first release the swap
cache reference and then frees the page by issuing two put_page).
>So if I haven't missed something clever going on here, this would
>explain a lot of problems people have reported with swapping making
>their machines act weird and eventually run out of ram.
That's because the MM balancing is broken. Try to reproduce with the
classzone patch applied.
Andrea
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prev parent reply other threads:[~2000-06-03 21:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-04-25 12:03 David S. Miller
2000-06-03 21:32 ` Andrea Arcangeli [this message]
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