From: Markus Trippelsdorf Date: Thu, 18 Nov 2010 02:46:06 +0000 (-0500) Subject: ext4: fix setting random pages PageUptodate X-Git-Tag: v2.6.37-rc3~1^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08da1193d2c8c7a25d0cef7f85d0b9f1ad7c583a;p=pandora-kernel.git ext4: fix setting random pages PageUptodate ext4_end_bio calls put_page and kmem_cache_free before calling SetPageUpdate(). This can result in setting the PageUptodate bit on random pages and causes the following BUG: BUG: Bad page state in process rm pfn:52e54 page:ffffea0001222260 count:0 mapcount:0 mapping: (null) index:0x0 arch kernel: page flags: 0x4000000000000008(uptodate) Fix the problem by moving put_io_page() after the SetPageUpdate() call. Thanks to Hugh Dickins for analyzing this problem. Reported-by: Markus Trippelsdorf Tested-by: Markus Trippelsdorf Signed-off-by: Markus Trippelsdorf Signed-off-by: "Theodore Ts'o" --- Reading git-diff-tree failed