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

Replace while blocksize;shift by ilog2 Signed-off-by: Fabian Frederick <[email protected]> Cc: Vyacheslav Dubeyko <[email protected]> Cc: Joe Perches <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kyagi · Jun 6, 2014 · 297cc27 · 297cc27
1 parent 2cd282a
commit 297cc27
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
@@ -231,9 +231,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
 	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);
 
 	/*