From: Gao Xiang <hsiangkao@linux.alibaba.com>
Date: Fri, 3 Jan 2025 09:03:34 +0000 (+0800)
Subject: erofs-utils: lib: use round_up() to avoid division
X-Git-Tag: accepted/tizen/unified/20250610.081809~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2d4bc7420a9ee6186cf28a9dee5fdc9c9f94f819;p=platform%2Fupstream%2Ferofs-utils.git

erofs-utils: lib: use round_up() to avoid division

A hotspot identified by profiling.

Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250103090338.740593-1-hsiangkao@linux.alibaba.com
---

diff --git a/lib/cache.c b/lib/cache.c
index 5b2cc45..f9aa6eb 100644
--- a/lib/cache.c
+++ b/lib/cache.c
@@ -76,11 +76,12 @@ static int __erofs_battach(struct erofs_buffer_block *bb,
 	struct erofs_sb_info *sbi = bmgr->sbi;
 	const unsigned int blkmask = erofs_blksiz(sbi) - 1;
 	erofs_off_t boff = bb->buffers.off;
-	const erofs_off_t alignedoffset = roundup(boff, alignsize);
+	const erofs_off_t alignedoffset = round_up(boff, alignsize);
 	bool tailupdate = false;
 	erofs_blk_t blkaddr;
 	int oob;
 
+	DBG_BUGON(alignsize & (alignsize - 1));
 	/* inline data must never span block boundaries */
 	if (erofs_blkoff(sbi, alignedoffset + incr + blkmask)
 			+ inline_ext > blkmask)