To prepare for supporting boot-time page size selection, refactor code to remove assumptions about PAGE_SIZE being compile-time constant. Code intended to be equivalent when compile-time page size is active. Update BUILD_BUG_ON()s to test against page size limits. Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx> --- ***NOTE*** Any confused maintainers may want to read the cover note here for context: https://lore.kernel.org/all/20241014105514.3206191-1-ryan.roberts@xxxxxxx/ drivers/char/random.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/char/random.c b/drivers/char/random.c index 87fe61295ea1f..49d6c4ef16df4 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -466,7 +466,7 @@ static ssize_t get_random_bytes_user(struct iov_iter *iter) if (!iov_iter_count(iter) || copied != sizeof(block)) break; - BUILD_BUG_ON(PAGE_SIZE % sizeof(block) != 0); + BUILD_BUG_ON(PAGE_SIZE_MIN % sizeof(block) != 0); if (ret % PAGE_SIZE == 0) { if (signal_pending(current)) break; @@ -1428,7 +1428,7 @@ static ssize_t write_pool_user(struct iov_iter *iter) if (!iov_iter_count(iter) || copied != sizeof(block)) break; - BUILD_BUG_ON(PAGE_SIZE % sizeof(block) != 0); + BUILD_BUG_ON(PAGE_SIZE_MIN % sizeof(block) != 0); if (ret % PAGE_SIZE == 0) { if (signal_pending(current)) break; -- 2.43.0
