fs/buffer: remove the min and max limit checks in __getblk_slow()

fs/buffer: remove the min and max limit checks in __getblk_slow()

All filesystems will already check the max and min value of their block
size during their initialization. __getblk_slow() is a very low-level
function to have these checks. Remove them and only check for logical
block size alignment.

As this check with logical block size alignment might never trigger, add
WARN_ON_ONCE() to the check. As WARN_ON_ONCE() will already print the
stack, remove the call to dump_stack().

Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Link: https://lore.kernel.org/20250626113223.181399-1-p.raghav@samsung.com
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>