scsi: ipr: Use kmalloc() to allocate IPR dump buffer memory

IPR dump machinery allocates memory to save adapter's crash dump using
__get_free_page().

This memory 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().

While on it, relax GFP_ATOMIC to GFP_NOIO for allocation of dump
buffers.  The allocations happen in a workqueue context, but with
storage adapter being in a state where it can't handle I/O.

Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Tested-by: Wen Xiong <wenxiong@linux.ibm.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-v2-3-7d2d21a810de@kernel.org
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions