From: Rik van Riel <riel@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Bob Liu <bob.liu@oracle.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>,
Luigi Semenzato <semenzato@google.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.kern
Subject: Re: [patch 4/9] mm: filemap: move radix tree hole searching here
Date: Fri, 10 Jan 2014 14:22:51 -0500 [thread overview]
Message-ID: <52D0488B.9080806@redhat.com> (raw)
In-Reply-To: <1389377443-11755-5-git-send-email-hannes@cmpxchg.org>
On 01/10/2014 01:10 PM, Johannes Weiner wrote:
> The radix tree hole searching code is only used for page cache, for
> example the readahead code trying to get a a picture of the area
> surrounding a fault.
>
> It sufficed to rely on the radix tree definition of holes, which is
> "empty tree slot". But this is about to change, though, as shadow
> page descriptors will be stored in the page cache after the actual
> pages get evicted from memory.
>
> Move the functions over to mm/filemap.c and make them native page
> cache operations, where they can later be adapted to handle the new
> definition of "page cache hole".
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.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>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Bob Liu <bob.liu@oracle.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>,
Luigi Semenzato <semenzato@google.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 4/9] mm: filemap: move radix tree hole searching here
Date: Fri, 10 Jan 2014 14:22:51 -0500 [thread overview]
Message-ID: <52D0488B.9080806@redhat.com> (raw)
In-Reply-To: <1389377443-11755-5-git-send-email-hannes@cmpxchg.org>
On 01/10/2014 01:10 PM, Johannes Weiner wrote:
> The radix tree hole searching code is only used for page cache, for
> example the readahead code trying to get a a picture of the area
> surrounding a fault.
>
> It sufficed to rely on the radix tree definition of holes, which is
> "empty tree slot". But this is about to change, though, as shadow
> page descriptors will be stored in the page cache after the actual
> pages get evicted from memory.
>
> Move the functions over to mm/filemap.c and make them native page
> cache operations, where they can later be adapted to handle the new
> definition of "page cache hole".
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Bob Liu <bob.liu@oracle.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>,
Luigi Semenzato <semenzato@google.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 4/9] mm: filemap: move radix tree hole searching here
Date: Fri, 10 Jan 2014 14:22:51 -0500 [thread overview]
Message-ID: <52D0488B.9080806@redhat.com> (raw)
In-Reply-To: <1389377443-11755-5-git-send-email-hannes@cmpxchg.org>
On 01/10/2014 01:10 PM, Johannes Weiner wrote:
> The radix tree hole searching code is only used for page cache, for
> example the readahead code trying to get a a picture of the area
> surrounding a fault.
>
> It sufficed to rely on the radix tree definition of holes, which is
> "empty tree slot". But this is about to change, though, as shadow
> page descriptors will be stored in the page cache after the actual
> pages get evicted from memory.
>
> Move the functions over to mm/filemap.c and make them native page
> cache operations, where they can later be adapted to handle the new
> definition of "page cache hole".
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
next prev parent reply other threads:[~2014-01-10 19:22 UTC|newest]
Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 18:10 [patch 0/9] mm: thrash detection-based file cache sizing v8 Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 18:10 ` [patch 1/9] fs: cachefiles: use add_to_page_cache_lru() Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-13 1:17 ` Minchan Kim
2014-01-13 1:17 ` Minchan Kim
2014-01-10 18:10 ` [patch 2/9] lib: radix-tree: radix_tree_delete_item() Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 18:10 ` [patch 3/9] mm: shmem: save one radix tree lookup when truncating swapped pages Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 18:25 ` Rik van Riel
2014-01-10 18:25 ` Rik van Riel
2014-01-10 18:25 ` Rik van Riel
2014-01-10 18:10 ` [patch 4/9] mm: filemap: move radix tree hole searching here Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 19:22 ` Rik van Riel [this message]
2014-01-10 19:22 ` Rik van Riel
2014-01-10 19:22 ` Rik van Riel
2014-01-13 1:25 ` Minchan Kim
2014-01-13 1:25 ` Minchan Kim
2014-01-10 18:10 ` [patch 5/9] mm + fs: prepare for non-page entries in page cache radix trees Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 19:39 ` Rik van Riel
2014-01-10 19:39 ` Rik van Riel
2014-01-10 19:39 ` Rik van Riel
2014-01-13 2:01 ` Minchan Kim
2014-01-13 2:01 ` Minchan Kim
2014-01-22 17:47 ` Johannes Weiner
2014-01-22 17:47 ` Johannes Weiner
2014-01-23 5:07 ` Minchan Kim
2014-01-23 5:07 ` Minchan Kim
2014-02-12 14:00 ` Mel Gorman
2014-02-12 14:00 ` Mel Gorman
2014-03-12 1:15 ` Johannes Weiner
2014-03-12 1:15 ` Johannes Weiner
2014-01-10 18:10 ` [patch 6/9] mm + fs: store shadow entries in page cache Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 22:30 ` Rik van Riel
2014-01-10 22:30 ` Rik van Riel
2014-01-10 22:30 ` Rik van Riel
2014-01-13 2:18 ` Minchan Kim
2014-01-13 2:18 ` Minchan Kim
2014-01-10 18:10 ` [patch 7/9] mm: thrash detection-based file cache sizing Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 22:51 ` Rik van Riel
2014-01-10 22:51 ` Rik van Riel
2014-01-10 22:51 ` Rik van Riel
2014-01-13 2:42 ` Minchan Kim
2014-01-13 2:42 ` Minchan Kim
2014-01-14 1:01 ` Bob Liu
2014-01-14 1:01 ` Bob Liu
2014-01-14 1:01 ` Bob Liu
2014-01-14 19:16 ` Johannes Weiner
2014-01-14 19:16 ` Johannes Weiner
2014-01-15 2:57 ` Bob Liu
2014-01-15 2:57 ` Bob Liu
2014-01-15 2:57 ` Bob Liu
2014-01-15 3:52 ` Zhang Yanfei
2014-01-15 3:52 ` Zhang Yanfei
2014-01-16 21:17 ` Johannes Weiner
2014-01-16 21:17 ` Johannes Weiner
2014-01-10 18:10 ` [patch 8/9] lib: radix_tree: tree node interface Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 22:57 ` Rik van Riel
2014-01-10 22:57 ` Rik van Riel
2014-01-10 22:57 ` Rik van Riel
2014-01-10 18:10 ` [patch 9/9] mm: keep page cache radix tree nodes in check Johannes Weiner
2014-01-10 18:10 ` Johannes Weiner
2014-01-10 23:09 ` Rik van Riel
2014-01-10 23:09 ` Rik van Riel
2014-01-10 23:09 ` Rik van Riel
2014-01-13 7:39 ` Minchan Kim
2014-01-13 7:39 ` Minchan Kim
2014-01-14 5:40 ` Minchan Kim
2014-01-14 5:40 ` Minchan Kim
2014-01-22 18:42 ` Johannes Weiner
2014-01-22 18:42 ` Johannes Weiner
2014-01-23 5:20 ` Minchan Kim
2014-01-23 5:20 ` Minchan Kim
2014-01-23 19:22 ` Johannes Weiner
2014-01-23 19:22 ` Johannes Weiner
2014-01-27 2:31 ` Minchan Kim
2014-01-27 2:31 ` Minchan Kim
2014-01-15 5:55 ` Bob Liu
2014-01-15 5:55 ` Bob Liu
2014-01-15 5:55 ` Bob Liu
2014-01-16 22:09 ` Johannes Weiner
2014-01-16 22:09 ` Johannes Weiner
2014-01-17 0:05 ` Dave Chinner
2014-01-17 0:05 ` Dave Chinner
2014-01-20 23:17 ` Johannes Weiner
2014-01-20 23:17 ` Johannes Weiner
2014-01-21 3:03 ` Dave Chinner
2014-01-21 3:03 ` Dave Chinner
2014-01-21 5:50 ` Johannes Weiner
2014-01-21 5:50 ` Johannes Weiner
2014-01-22 3:06 ` Dave Chinner
2014-01-22 3:06 ` Dave Chinner
2014-01-22 6:57 ` Johannes Weiner
2014-01-22 6:57 ` Johannes Weiner
2014-01-22 18:48 ` Johannes Weiner
2014-01-22 18:48 ` Johannes Weiner
2014-01-23 5:57 ` Minchan Kim
2014-01-23 5:57 ` Minchan Kim
-- strict thread matches above, loose matches on Subject: below --
2013-12-02 19:21 [patch 0/9] mm: thrash detection-based file cache sizing v7 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
2013-11-24 23:38 [patch 0/9] mm: thrash detection-based file cache sizing v6 Johannes Weiner
2013-11-24 23:38 ` [patch 4/9] mm: filemap: move radix tree hole searching here Johannes Weiner
2013-11-24 23:38 ` Johannes Weiner
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