From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Wed, 13 Jan 2010 12:14:09 +0000 (+0900)
Subject: vfs: Fix vmtruncate() regression
X-Git-Tag: v2.6.33-rc5~77
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cedabed49b39b4319bccc059a63344b6232b619c;p=pandora-kernel.git

vfs: Fix vmtruncate() regression

If __block_prepare_write() was failed in block_write_begin(), the
allocated blocks can be outside of ->i_size.

But new truncate_pagecache() in vmtuncate() does nothing if new < old.
It means the above usage is not working anymore.

So, this patch fixes it by removing "new < old" check. It would need
more cleanup/change. But, now -rc and truncate working is in progress,
so, this tried to fix it minimum change.

Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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