ntfs: update super block operations

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Update the super block operations to support the new fs_context-based
mount API, full read-write support including ->sync_fs, and file system
shutdown support.

Update ntfs_statfs() to provide statistics using atomic counters for free
clusters and MFT records.

Add a dedicated workqueue to compute the total number of free clusters by
scanning  asynchronously. Synchronous bitmap scanning during mount
can take a very long time on large volumes, severely delaying mount
completion. Moving this to the background allows mount to finish almost
immediately.

Implement ntfs_write_volume_label() to allow changing the volume label.

Reviewed-by: Christoph Hellwig <[email protected]>
Acked-by: Christoph Hellwig <[email protected]>
Signed-off-by: Namjae Jeon <[email protected]>

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Namjae Jeon committed 2026-02-19 21:48:06 +09:00

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commit 6251f0b0de

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