scsi: target: file: Use kmalloc() to allocate temporary protection buffer

fd_do_prot_unmap() uses __get_free_page() to allocate a temporary buffer
that is used to invalidate protection info for the unmapped region by
filling with 0xff pattern.

This buffer can be allocated with kmalloc() as there's nothing special
about it to go directly to the page allocator.

kmalloc() provides a better API that does not require ugly casts and
kfree() does not need to know the size of the freed object.

Replace use of __get_free_page() with kmalloc().

Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Link: https://patch.msgid.link/20260704-b4-scsi-v2-1-7d2d21a810de@kernel.org
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions