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| author | Frank van der Linden <fvdl@google.com> | 2024-04-04 19:25:14 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-16 14:51:07 +0300 |
| commit | 012998e21f578af06db3b9ee66a7762692640f80 (patch) | |
| tree | f88d5ef5d5a695c144da50978fd2cfd1e0b82969 /fs/fs_struct.c | |
| parent | aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 (diff) | |
| download | linux-012998e21f578af06db3b9ee66a7762692640f80.tar.xz | |
mm/cma: drop incorrect alignment check in cma_init_reserved_mem
commit b174f139bdc8aaaf72f5b67ad1bd512c4868a87e upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/fs_struct.c')
0 files changed, 0 insertions, 0 deletions