ext4: Use new framework for data=ordered mode in JBD2
This patch makes ext4 use inode-based implementation of data=ordered mode in JBD2. It allows us to unify some data=ordered and data=writeback paths (especially writepage since we don't have to start a transaction anymore) and remove some buffer walking. Updated fix from Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> to fix file system hang due to corrupt jinode values. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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