From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 15 Jul 2013 16:27:47 +0000 (-0400)
Subject: ext4: yield during large unlinks
X-Git-Tag: v3.11-rc2~5^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76828c882630ced08b5ddce22cc0095b05de9bc5;p=pandora-kernel.git

ext4: yield during large unlinks

During large unlink operations on files with extents, we can use a lot
of CPU time.  This adds a cond_resched() call when starting to examine
the next level of a multi-level extent tree.  Multi-level extent trees
are rare in the first place, and this should rarely be executed.

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