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f2fs: optimize the init_dirty_segmap function 

Optimize the while loop condition

Since this condition will always be true and while loop will
be terminated by the following condition in code:

if (segno >= TOTAL_SEGS(sbi))
    break;
Hence we can replace the while loop condition with while(1)
instead of always checking for segno to be less than Total segs.

Also we do not need to use TOTAL_SEGS() everytime. We can store
this value in a local variable since this value is constant.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Namjae Jeon 2013-06-16 09:49:11 +09:00 committed by Jaegeuk Kim
parent 060dd67b3c
commit 8736fbf003
1 changed files with 4 additions and 4 deletions
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8
fs/f2fs/segment.c
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@ -1582,13 +1582,13 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi)
{
struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
struct free_segmap_info *free_i = FREE_I(sbi);
unsigned int segno = 0, offset = 0;
unsigned int segno = 0, offset = 0, total_segs = TOTAL_SEGS(sbi);
unsigned short valid_blocks;
while (segno < TOTAL_SEGS(sbi)) {
while (1) {
/* find dirty segment based on free segmap */
segno = find_next_inuse(free_i, TOTAL_SEGS(sbi), offset);
if (segno >= TOTAL_SEGS(sbi))
segno = find_next_inuse(free_i, total_segs, offset);
if (segno >= total_segs)
break;
offset = segno + 1;
valid_blocks = get_valid_blocks(sbi, segno, 0);