From cbd56e7d20d7188d62a85aa6986a7b2c8e755ab5 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Date: Tue, 30 Jul 2013 11:36:53 +0900
Subject: [PATCH] f2fs: fix handling orphan inodes

This patch fixes mishandling of the sbi->n_orphans variable.

If users request lots of f2fs_unlink(), check_orphan_space() could be contended.
In such the case, sbi->n_orphans can be read incorrectly so that f2fs_unlink()
would fall into the wrong state which results in the failure of
add_orphan_inode().

So, let's increment sbi->n_orphans virtually prior to the actual orphan inode
stuffs. After that, let's release sbi->n_orphans by calling release_orphan_inode
or remove_orphan_inode.

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