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H A Dinode.cdiff a827eaffff07c7d58a4cb32158cbeb4849f4e33a Wed Sep 09 21:36:03 CDT 2009 Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> ext4: Take page lock before looking at attached buffer_heads flags

In order to check whether the buffer_heads are mapped we need to hold
page lock. Otherwise a reclaim can cleanup the attached buffer_heads.

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