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f2fs: use sbi->blocks_per_seg to avoid unnecessary calculation

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Use sbi->blocks_per_seg directly to avoid unnecessary calculation when using
1 << sbi->log_blocks_per_seg.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2015-12-01 11:56:52 +08:00 committed by Jaegeuk Kim
parent 9006f2c93f
commit 3519e3f992
5 changed files with 7 additions and 9 deletions
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2
fs/f2fs/debug.c
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@ -105,7 +105,7 @@ static void update_sit_info(struct f2fs_sb_info *sbi)
bimodal = 0;
total_vblocks = 0;
blks_per_sec = sbi->segs_per_sec * (1 << sbi->log_blocks_per_seg);
blks_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
hblks_per_sec = blks_per_sec / 2;
for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec);

3
fs/f2fs/f2fs.h
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@ -1099,8 +1099,7 @@ static inline int get_dirty_pages(struct inode *inode)
static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
{
unsigned int pages_per_sec = sbi->segs_per_sec *
(1 << sbi->log_blocks_per_seg);
unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
return ((get_pages(sbi, block_type) + pages_per_sec - 1)
>> sbi->log_blocks_per_seg) / sbi->segs_per_sec;
}

5
fs/f2fs/file.c
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@ -1654,10 +1654,9 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
struct f2fs_map_blocks map;
struct extent_info ei;
pgoff_t pg_start, pg_end;
unsigned int blk_per_seg = 1 << sbi->log_blocks_per_seg;
unsigned int blk_per_seg = sbi->blocks_per_seg;
unsigned int total = 0, sec_num;
unsigned int pages_per_sec = sbi->segs_per_sec *
(1 << sbi->log_blocks_per_seg);
unsigned int pages_per_sec = sbi->segs_per_sec * blk_per_seg;
block_t blk_end = 0;
bool fragmented = false;
int err;

4
fs/f2fs/gc.c
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@ -173,9 +173,9 @@ static unsigned int get_max_cost(struct f2fs_sb_info *sbi,
{
/* SSR allocates in a segment unit */
if (p->alloc_mode == SSR)
return 1 << sbi->log_blocks_per_seg;
return sbi->blocks_per_seg;
if (p->gc_mode == GC_GREEDY)
return (1 << sbi->log_blocks_per_seg) * p->ofs_unit;
return sbi->blocks_per_seg * p->ofs_unit;
else if (p->gc_mode == GC_CB)
return UINT_MAX;
else /* No other gc_mode */

2
fs/f2fs/node.h
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@ -183,7 +183,7 @@ static inline pgoff_t current_nat_addr(struct f2fs_sb_info *sbi, nid_t start)
block_addr = (pgoff_t)(nm_i->nat_blkaddr +
(seg_off << sbi->log_blocks_per_seg << 1) +
(block_off & ((1 << sbi->log_blocks_per_seg) - 1)));
(block_off & (sbi->blocks_per_seg - 1)));
if (f2fs_test_bit(block_off, nm_i->nat_bitmap))
block_addr += sbi->blocks_per_seg;