md: use folio_alloc_buffers()

Remove the last user of alloc_page_buffers().  Use folio_alloc_buffers()
instead, since alloc_page_buffers() is a wrap over it.  Although the pages
used in md-bitmap are not folios, as they are not mapped into userspace
nor enter the page cache, but they still have buffer heads attached. 
Cleaning up the code to not use buffer heads is future work.

[ziy@nvidia.com: reword commit message]
Link: https://lore.kernel.org/20260920-remove-pg_private-v5-13-bb68b6a21869@nvidia.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>

0 files changed, 0 insertions, 0 deletions