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| author |   Frank van der Linden <fvdl@google.com> | 2024-04-04 16:25:14 +0000 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2024-04-25 20:56:42 -0700 |
| commit | b174f139bdc8aaaf72f5b67ad1bd512c4868a87e (patch) | |
| tree | 443975a167368dbf4da6556280f54bfb4585a9a3 /mm/truncate.c | |
| parent | selftests/mm: fix additional build errors for selftests (diff) | |
| download | wireguard-linux-b174f139bdc8aaaf72f5b67ad1bd512c4868a87e.tar.xz wireguard-linux-b174f139bdc8aaaf72f5b67ad1bd512c4868a87e.zip | |
mm/cma: drop incorrect alignment check in cma_init_reserved_mem
cma_init_reserved_mem uses IS_ALIGNED to check if the size represented by
one bit in the cma allocation bitmask is aligned with
CMA_MIN_ALIGNMENT_BYTES (pageblock size).
However, this is too strict, as this will fail if order_per_bit >
pageblock_order, which is a valid configuration.
We could check IS_ALIGNED both ways, but since both numbers are powers of
two, no check is needed at all.
Link: https://lkml.kernel.org/r/20240404162515.527802-1-fvdl@google.com
Fixes: de9e14eebf33 ("drivers: dma-contiguous: add initialization from device tree")
Signed-off-by: Frank van der Linden <fvdl@google.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/truncate.c')
0 files changed, 0 insertions, 0 deletions