From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Fri, 24 Oct 2014 02:48:09 +0000 (-0700)
Subject: f2fs: revisit inline_data to avoid data races and potential bugs
X-Git-Tag: omap-for-v3.19/fixes-rc1~146^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3d208f96d6bb21247108a956dead6a028d5cdb2;p=pandora-kernel.git

f2fs: revisit inline_data to avoid data races and potential bugs

This patch simplifies the inline_data usage with the following rule.
1. inline_data is set during the file creation.
2. If new data is requested to be written ranges out of inline_data,
 f2fs converts that inode permanently.
3. There is no cases which converts non-inline_data inode to inline_data.
4. The inline_data flag should be changed under inode page lock.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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