From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Sat, 18 Oct 2014 03:33:55 +0000 (-0700)
Subject: f2fs: avoid to allocate when inline_data was written
X-Git-Tag: omap-for-v3.19/fixes-rc1~146^2~82
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ba69cf9877384baebd16c6fb51ceccd13677b37;p=pandora-kernel.git

f2fs: avoid to allocate when inline_data was written

The sceanrio is like this.
inline_data   i_size     page                 write_begin/vm_page_mkwrite
  X             30       dirty_page
  X             30                            write to #4096 position
  X             30       get_dnode_of_data    wait for get_dnode_of_data
  O             30       write inline_data
  O             30                            get_dnode_of_data
  O             30                            reserve data block
..

In this case, we have #0 = NEW_ADDR and inline_data as well.
We should not allow this condition for further access.

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