From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Thu, 27 Feb 2014 11:09:05 +0000 (+0900)
Subject: f2fs: add an sysfs entry to control the directory level
X-Git-Tag: v3.15-rc1~62^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab9fa662e4867455f44f4de96d29a7f09cf292c6;p=pandora-kernel.git

f2fs: add an sysfs entry to control the directory level

This patch adds an sysfs entry to control dir_level used by the large directory.

The description of this entry is:

 dir_level                    This parameter controls the directory level to
			      support large directory. If a directory has a
			      number of files, it can reduce the file lookup
			      latency by increasing this dir_level value.
			      Otherwise, it needs to decrease this value to
			      reduce the space overhead. The default value is 0.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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