Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number.
Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number.

Current refcounttree codes actually didn't writeback the new pages out in
write-back mode, due to a bug of always passing a ZERO number of clusters
to 'ocfs2_cow_sync_writeback', the patch tries to pass a proper one in.

Signed-off-by: Tristan Ye <1c61ece1e0e3e7d92a41e9a901fc3956c7c63903@oracle.com>
Cc: 4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@kernel.org
Signed-off-by: Joel Becker <9d3d88cacb47f143c6cf36b9a61c09b528b2c49a@evilplan.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas