From: Sage Weil <sage@newdream.net>
Date: Tue, 29 Sep 2009 22:38:44 +0000 (-0400)
Subject: Btrfs: fix deadlock with free space handling and user transactions
X-Git-Tag: v2.6.32-rc3~13^2~2^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd7e0b7b02ccff73b87032e20fc5b4f2c1cfcc14;p=pandora-kernel.git

Btrfs: fix deadlock with free space handling and user transactions

If an ioctl-initiated transaction is open, we can't force a commit during
the free space checks in order to free up pinned extents or else we
deadlock.  Just ENOSPC instead.

A more satisfying solution that reserves space for the entire user
transaction up front is forthcoming...

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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