Re: [f2fs-dev] [PATCH] f2fs: introduce a new direct_IO write path

2013-12-20 Thread Jaegeuk Kim
@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH] f2fs: introduce a new direct_IO write path Change log from v1: o fix NOSPC error handling From b8511a74fe98b67247a9feeed58441e8f5ffd705 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim jaegeuk@samsung.com Date: Mon, 16 Dec 2013

Re: [f2fs-dev] [PATCH] f2fs: introduce a new direct_IO write path

2013-12-19 Thread Chao Yu
] [PATCH] f2fs: introduce a new direct_IO write path Change log from v1: o fix NOSPC error handling From b8511a74fe98b67247a9feeed58441e8f5ffd705 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim jaegeuk@samsung.com Date: Mon, 16 Dec 2013 19:04:05 +0900 Subject: [PATCH] f2fs: introduce a new

Re: [f2fs-dev] [PATCH] f2fs: introduce a new direct_IO write path

2013-12-18 Thread Chao Yu
-Original Message- From: Jaegeuk Kim [mailto:jaegeuk@samsung.com] Sent: Wednesday, December 18, 2013 8:12 AM To: linux-fsde...@vger.kernel.org Cc: linux-ker...@vger.kernel.org; linux-f2fs-devel@lists.sourceforge.net Subject: Re: [f2fs-dev] [PATCH] f2fs: introduce a new direct_IO

[f2fs-dev] [PATCH] f2fs: introduce a new direct_IO write path

2013-12-16 Thread Jaegeuk Kim
Previously, f2fs doesn't support direct IOs with high performance which throws every write requests to the buffered write path, resulting in highly performance degradation due to memory opeations like copy_from_user. This patch introduces a new direct IO path in which every write requests are