From: Yan <yanzheng@21cn.com>
Date: Tue, 6 Nov 2007 15:26:26 +0000 (-0500)
Subject: Btrfs: Fix u32 overflow in dirty_and_release_pages.
X-Git-Tag: v2.6.29-rc1~27^2~9^2~55^2~56^2~30^2~421
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dcfec0dcb1b1a037fb26177789e8f108bc429cb3;p=pandora-kernel.git

Btrfs: Fix u32 overflow in dirty_and_release_pages.

When calculating the size of inline extent,  inode->i_size should also
be take into consideration, otherwise sys_write may drop some data
silently.  You can test this bug by:

#dd if=/dev/zero bs=4k count=1 of=test_file
#dd if=/dev/zero bs=2k count=1 of=test_file conv=notrunc

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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