xfs: refactor xfs_file_fallocate

Refactor xfs_file_fallocate into separate helpers for each mode,
two factors for i_size handling and a single switch statement over the
supported modes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240827065123.1762168-7-hch@lst.de
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2024-08-27 08:50:50 +02:00 • committed by Christian Brauner
commit 4acaddf5d1