RE: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-09 Thread Chao Yu
Hi, > -Original Message- > From: Jaegeuk Kim [mailto:jaegeuk@samsung.com] > Sent: Monday, March 10, 2014 1:38 PM > To: Chao Yu > Cc: 'Gu Zheng'; 'linux-kernel'; 'f2fs' > Subject: RE: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node

Re: [PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-09 Thread Gu Zheng
Hi Kim, On 03/10/2014 12:45 PM, Jaegeuk Kim wrote: > Hi Gu, > > 2014-03-07 (금), 18:43 +0800, Gu Zheng: >> Previously, we ra_sum_pages to pre-read contiguous pages as more >> as possible, and if we fail to alloc more pages, an ENOMEM error >> will be reported upstream, even though we have alloced

RE: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-09 Thread Jaegeuk Kim
2fs > > Subject: Re: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node_summary > > slightly > > > > Hi Gu, > > > > 2014-03-07 (금), 18:43 +0800, Gu Zheng: > > > Previously, we ra_sum_pages to pre-read contiguous pages as more > > > as possible, and

RE: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-09 Thread Chao Yu
Hi Gu, Kim: One more comment. > -Original Message- > From: Jaegeuk Kim [mailto:jaegeuk@samsung.com] > Sent: Monday, March 10, 2014 12:46 PM > To: Gu Zheng > Cc: linux-kernel; f2fs > Subject: Re: [f2fs-dev] [PATCH 4/5] f2fs: optimize restore_node_summary >

Re: [PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-09 Thread Jaegeuk Kim
Hi Gu, 2014-03-07 (금), 18:43 +0800, Gu Zheng: > Previously, we ra_sum_pages to pre-read contiguous pages as more > as possible, and if we fail to alloc more pages, an ENOMEM error > will be reported upstream, even though we have alloced some pages > yet. In fact, we can use the available pages to

[PATCH 4/5] f2fs: optimize restore_node_summary slightly

2014-03-07 Thread Gu Zheng
Previously, we ra_sum_pages to pre-read contiguous pages as more as possible, and if we fail to alloc more pages, an ENOMEM error will be reported upstream, even though we have alloced some pages yet. In fact, we can use the available pages to do the job partly, and continue the rest in the followi