From: Rik van Riel <riel@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <andi@firstfloor.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Dave Chinner <david@fromorbit.com>,
Greg Thelen <gthelen@google.com>, Hugh Dickins <hughd@google.com>,
Jan Kara <jack@suse.cz>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Metin Doslu <metin@citusdata.com>,
Michel Lespinasse <walken@google.com>,
Minchan Kim <minchan.kim@gmail.com>,
Ozgun Erdogan <ozgun@citusdata.com>,
Peter Zijlstra <peterz@infradead.org>,
Roman Gushchin <klamm@yandex-team.ru>,
Ryan Mallon <rmallon@gmail.com>, Tejun Heo <tj@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [patch 2/9] lib: radix-tree: radix_tree_delete_item()
Date: Mon, 02 Dec 2013 17:24:22 -0500 [thread overview]
Message-ID: <529D0896.2090707@redhat.com> (raw)
In-Reply-To: <1386012108-21006-3-git-send-email-hannes@cmpxchg.org>
On 12/02/2013 02:21 PM, Johannes Weiner wrote:
> Provide a function that does not just delete an entry at a given
> index, but also allows passing in an expected item. Delete only if
> that item is still located at the specified index.
>
> This is handy when lockless tree traversals want to delete entries as
> well because they don't have to do an second, locked lookup to verify
> the slot has not changed under them before deleting the entry.
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> Reviewed-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <andi@firstfloor.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Christoph Hellwig <hch@infradead.org>,
Dave Chinner <david@fromorbit.com>,
Greg Thelen <gthelen@google.com>, Hugh Dickins <hughd@google.com>,
Jan Kara <jack@suse.cz>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Mel Gorman <mgorman@suse.de>, Metin Doslu <metin@citusdata.com>,
Michel Lespinasse <walken@google.com>,
Minchan Kim <minchan.kim@gmail.com>,
Ozgun Erdogan <ozgun@citusdata.com>,
Peter Zijlstra <peterz@infradead.org>,
Roman Gushchin <klamm@yandex-team.ru>,
Ryan Mallon <rmallon@gmail.com>, Tejun Heo <tj@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [patch 2/9] lib: radix-tree: radix_tree_delete_item()
Date: Mon, 02 Dec 2013 17:24:22 -0500 [thread overview]
Message-ID: <529D0896.2090707@redhat.com> (raw)
In-Reply-To: <1386012108-21006-3-git-send-email-hannes@cmpxchg.org>
On 12/02/2013 02:21 PM, Johannes Weiner wrote:
> Provide a function that does not just delete an entry at a given
> index, but also allows passing in an expected item. Delete only if
> that item is still located at the specified index.
>
> This is handy when lockless tree traversals want to delete entries as
> well because they don't have to do an second, locked lookup to verify
> the slot has not changed under them before deleting the entry.
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> Reviewed-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
next prev parent reply other threads:[~2013-12-02 22:24 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-02 19:21 [patch 0/9] mm: thrash detection-based file cache sizing v7 Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 1/9] fs: cachefiles: use add_to_page_cache_lru() Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 21:00 ` Rik van Riel
2013-12-02 21:00 ` Rik van Riel
2013-12-02 19:21 ` [patch 2/9] lib: radix-tree: radix_tree_delete_item() Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 22:24 ` Rik van Riel [this message]
2013-12-02 22:24 ` Rik van Riel
2013-12-02 19:21 ` [patch 3/9] mm: shmem: save one radix tree lookup when truncating swapped pages Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 4/9] mm: filemap: move radix tree hole searching here Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 5/9] mm + fs: prepare for non-page entries in page cache radix trees Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 6/9] mm + fs: store shadow entries in page cache Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 7/9] mm: thrash detection-based file cache sizing Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 8/9] lib: radix_tree: tree node interface Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 19:21 ` [patch 9/9] mm: keep page cache radix tree nodes in check Johannes Weiner
2013-12-02 19:21 ` Johannes Weiner
2013-12-02 22:10 ` Dave Chinner
2013-12-02 22:10 ` Dave Chinner
2013-12-02 22:46 ` Johannes Weiner
2013-12-02 22:46 ` Johannes Weiner
-- strict thread matches above, loose matches on Subject: below --
2014-01-10 18:10 [patch 0/9] mm: thrash detection-based file cache sizing v8 Johannes Weiner
2014-01-10 18:10 ` [patch 2/9] lib: radix-tree: radix_tree_delete_item() Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2013-11-24 23:38 [patch 0/9] mm: thrash detection-based file cache sizing v6 Johannes Weiner
2013-11-24 23:38 ` [patch 2/9] lib: radix-tree: radix_tree_delete_item() Johannes Weiner
2013-11-24 23:38 ` Johannes Weiner
2013-11-25 8:21 ` Minchan Kim
2013-11-25 8:21 ` Minchan Kim
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