On 2015-05-28 02:18 PM, Theodore Ts'o wrote:
> On Wed, May 27, 2015 at 02:18:54PM -0700, Jaegeuk Kim wrote:
>> The problem that I'd like to address here is to reduce the call counts of
>> allocating and freeing a number of pages in pairs.
>>
>> When I conduct xfstests/224 under 1GB DRAM, I've see
dev] [PATCH 2/3] f2fs crypto: use bounce pages from
> mempool first
>
> Hi Chao,
>
> On Mon, May 25, 2015 at 06:00:47PM +0800, Chao Yu wrote:
> > Hi Jaegeuk,
> >
[snip]
> >
> > Using alloc_page(GFP_NOFS | __GFP_WAIT) to avoid failure?
>
> #define GFP
On Wed, May 27, 2015 at 02:18:54PM -0700, Jaegeuk Kim wrote:
> The problem that I'd like to address here is to reduce the call counts of
> allocating and freeing a number of pages in pairs.
>
> When I conduct xfstests/224 under 1GB DRAM, I've seen triggering several oom
> killers, and in that mome
On Mon, May 25, 2015 at 03:55:51PM -0400, Theodore Ts'o wrote:
> On Thu, May 21, 2015 at 05:40:24PM -0700, Jaegeuk Kim wrote:
> > If a lot of write streams are triggered, alloc_page and __free_page are
> > costly called, resulting in high memory pressure.
> >
> > In order to avoid that, let's reus
rnel.org;
> > linux-f2fs-devel@lists.sourceforge.net
> > Cc: Jaegeuk Kim
> > Subject: [f2fs-dev] [PATCH 2/3] f2fs crypto: use bounce pages from mempool
> > first
> >
> > If a lot of write streams are triggered, alloc_page and __free_page are
> > costly ca
On Thu, May 21, 2015 at 05:40:24PM -0700, Jaegeuk Kim wrote:
> If a lot of write streams are triggered, alloc_page and __free_page are
> costly called, resulting in high memory pressure.
>
> In order to avoid that, let's reuse mempool pages for writeback pages.
The reason why the mempool pages wa
Hi Jaegeuk,
> -Original Message-
> From: Jaegeuk Kim [mailto:jaeg...@kernel.org]
> Sent: Friday, May 22, 2015 8:40 AM
> To: linux-ker...@vger.kernel.org; linux-fsde...@vger.kernel.org;
> linux-f2fs-devel@lists.sourceforge.net
> Cc: Jaegeuk Kim
> Subject: [f2fs-dev] [P
If a lot of write streams are triggered, alloc_page and __free_page are
costly called, resulting in high memory pressure.
In order to avoid that, let's reuse mempool pages for writeback pages.
Signed-off-by: Jaegeuk Kim
---
fs/f2fs/crypto.c | 16
1 file changed, 4 insertions(+)
