From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 15 Jul 2013 04:09:37 +0000 (-0400)
Subject: ext4: simplify calculation of blocks to free on error
X-Git-Tag: v3.11-rc2~5^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c8e15130e1636f68d5165aa2605b8e9cba0f644c;p=pandora-kernel.git

ext4: simplify calculation of blocks to free on error

In ext4_ext_map_blocks(), if we have successfully allocated the data
blocks, but then run into trouble inserting the extent into the extent
tree, most likely due to an ENOSPC condition, determine the arguments
to ext4_free_blocks() in a simpler way which is easier to prove to be
correct.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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