From: Chao Yu <chao2.yu@samsung.com>
Date: Thu, 3 Jul 2014 10:58:39 +0000 (+0800)
Subject: f2fs: reduce competition among node page writes
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~163^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3582c68920105e29d219714d8a6fbde25a43379;p=pandora-kernel.git

f2fs: reduce competition among node page writes

We do not need to block on ->node_write among different node page writers e.g.
fsync/flush, unless we have a node page writer from write_checkpoint.
So it's better use rw_semaphore instead of mutex type for ->node_write to
promote performance.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

Reading git-diff-tree failed