From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Date: Tue, 2 Jun 2009 12:09:25 +0000 (-0400)
Subject: ext4: Fix discard of inode prealloc space with delayed allocation.
X-Git-Tag: v2.6.27.25~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5f1839fa7f1f9431fe85dc512ed765caf96bdc1f;p=pandora-kernel.git

ext4: Fix discard of inode prealloc space with delayed allocation.

(cherry picked from commit d6014301b5599fba395c42a1e96a7fe86f7d0b2d)

With delayed allocation we should not/cannot discard inode prealloc
space during file close. We would still have dirty pages for which we
haven't allocated blocks yet. With this fix after each get_blocks
request we check whether we have zero reserved blocks and if yes and
we don't have any writers on the file we discard inode prealloc space.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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