From: Fabian Frederick <fabf@skynet.be>
Date: Fri, 6 Jun 2014 21:36:29 +0000 (-0700)
Subject: fs/hfsplus/wrapper.c: replace shift loop by ilog2
X-Git-Tag: firefly_0821_release~176^2~3820^2~4^2~117
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=297cc27207446e9f054492fff5b561cebc589328;p=firefly-linux-kernel-4.4.55.git

fs/hfsplus/wrapper.c: replace shift loop by ilog2

Replace while blocksize;shift by ilog2

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 284c90f943a1..cc6235671437 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -231,9 +231,7 @@ reread:
 	if (blocksize < HFSPLUS_SECTOR_SIZE || ((blocksize - 1) & blocksize))
 		goto out_free_backup_vhdr;
 	sbi->alloc_blksz = blocksize;
-	sbi->alloc_blksz_shift = 0;
-	while ((blocksize >>= 1) != 0)
-		sbi->alloc_blksz_shift++;
+	sbi->alloc_blksz_shift = ilog2(blocksize);
 	blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE);
 
 	/*