Revert "[PATCH] Btrfs: fix data corruption after fast fsync and writeback error"

This reverts commit c6476a4f8dfecc1fdb10a076b4537aba05cf67e7.
Revert "[PATCH v4] Btrfs: fix fsync data loss after a ranged fsync"

This reverts commit 70841a69ef1ca15e60bb59ee37be034f13419015.
[PATCH v5] Btrfs: fix fsync data loss after a ranged fsync
[PATCH] Btrfs: fix data corruption after fast fsync and writeback error
[PATCH] Btrfs: fix directory recovery from fsync log