vc_screen: replace __get_free_pages() with kmalloc()

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vcs_read() and vcs_write() allocate staging buffers with
__get_free_pages().

These buffers can be allocated with kmalloc() as there's nothing special
about them to go directly to the page allocator.

kmalloc() provides a better API that does not require ugly casts and it's a
modern way of saying "I need a page-sized buffer"

Replace use of __get_free_page() with kmalloc() and drop unused now
DEFINE_FREE(free_page_ptr ...)

Link: https://lore.kernel.org/all/700c5a5f-3128-4671-99aa-827ca73f5cdf@kernel.org
Link: https://lore.kernel.org/all/635405e4-9423-4a25-a6e7-e03c8ea0bcbe@redhat.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://patch.msgid.link/20260528-b4-tty-v1-4-9da9f7aec5f2@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Mike Rapoport (Microsoft) 2026-05-28 13:24:20 +03:00 • committed by Greg Kroah-Hartman

parent 274afb49ee

commit de96e8b27b

1 changed files with 2 additions and 4 deletions

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drivers/tty/vt/vc_screen.c

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