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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-23 21:45:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-23 21:45:24 +0100 |
| commit | caa445d808d27880f92d866902f6717f4d4cd3ca (patch) | |
| tree | c46a564ecbce58310436f0f30b8f3c6d5d93c19b /mm/cma.c | |
| parent | drivers/tty: serial: remove info message (diff) | |
| parent | Linux 4.0-rc5 (diff) | |
| download | linux-caa445d808d27880f92d866902f6717f4d4cd3ca.tar.xz linux-caa445d808d27880f92d866902f6717f4d4cd3ca.zip | |
Merge 4.0-rc5 into tty-next
We want the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/cma.c')
| -rw-r--r-- | mm/cma.c | 12 |
1 files changed, 7 insertions, 5 deletions
@@ -64,15 +64,17 @@ static unsigned long cma_bitmap_aligned_mask(struct cma *cma, int align_order) return (1UL << (align_order - cma->order_per_bit)) - 1; } +/* + * Find a PFN aligned to the specified order and return an offset represented in + * order_per_bits. + */ static unsigned long cma_bitmap_aligned_offset(struct cma *cma, int align_order) { - unsigned int alignment; - if (align_order <= cma->order_per_bit) return 0; - alignment = 1UL << (align_order - cma->order_per_bit); - return ALIGN(cma->base_pfn, alignment) - - (cma->base_pfn >> cma->order_per_bit); + + return (ALIGN(cma->base_pfn, (1UL << align_order)) + - cma->base_pfn) >> cma->order_per_bit; } static unsigned long cma_bitmap_maxno(struct cma *cma) |