nfs: stop using writeback internals for WB_WRITEBACK accounting

Convert NFS WB_WRITEBACK accounting to writeback helper, eliminating
direct access to writeback.

Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kundan Kumar <kundan.kumar@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://patch.msgid.link/20260213054634.79785-5-kundan.kumar@samsung.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Kundan Kumar 2026-02-13 11:16:34 +05:30 • committed by Christian Brauner
commit fd15b9c6ec
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2 changed files with 2 additions and 3 deletions