From: Nick Piggin <npiggin@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: Nick Piggin <npiggin@suse.de>,
Linux Memory Management <linux-mm@kvack.org>
Subject: [patch 0/4] lockless pagecache for 2.6.18-rc7-mm1
Date: Fri, 22 Sep 2006 21:22:10 +0200 (CEST) [thread overview]
Message-ID: <20060922172042.22370.62513.sendpatchset@linux.site> (raw)
Hi,
I have rewritten the lockless pagecache patches to a point that they
are much closer to how they looked before my adapting them to radix
tree direct.
Among problems solved since patchset was last posted (thanks Hugh,
Lee, and others) are:
- gang lookups now can no longer skip over indexes if a pages moves
between being looked up and a reference taken.
- the verification of the "speculative get" now checks the radix tree
rather than page->mapping and index. So there is no chance a non
pagecache user might put unlucky values in there and break it.
- no need for a specific find_get_swap_page
There shouldn't be any known problems with it now, I hope.
There is a bit of overlap with the readahead code in -mm, which may
cause (simple) rejects if you drop it... but otherwise it is close
to 2.6.18.
Nick
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next reply other threads:[~2006-09-22 19:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-22 19:22 Nick Piggin [this message]
2006-09-22 19:22 ` [patch 2/4] radix-tree: use indirect bit Nick Piggin
2006-09-22 19:22 ` [patch 2/9] radix-tree: gang_lookup_slot Nick Piggin
2006-09-22 19:22 ` [patch 3/9] mm: speculative get page Nick Piggin
2006-09-23 10:01 ` Peter Zijlstra
2006-09-24 18:01 ` Hugh Dickins
2006-09-25 2:00 ` Nick Piggin
2006-09-25 11:47 ` Nick Piggin
2006-09-25 13:04 ` Peter Zijlstra
2006-09-25 22:41 ` Nick Piggin
2006-09-22 19:22 ` [patch 4/9] mm: lockless pagecache lookups Nick Piggin
2006-09-22 20:01 ` Lee Schermerhorn
2006-09-23 2:35 ` Nick Piggin
2006-09-22 19:24 ` [patch 0/4] lockless pagecache for 2.6.18-rc7-mm1 Nick Piggin
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